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6742:{\displaystyle \nabla F_{t_{0}}^{t}(x_{0})\approx {\begin{pmatrix}{\frac {x^{1}(t;t_{0},x_{0}+\delta _{1})-x^{1}(t;t_{0},x_{0}-\delta _{1})}{\left|2\delta _{1}\right|}}&{\frac {x^{1}(t;t_{0},x_{0}+\delta _{2})-x^{1}(t;t_{0},x_{0}-\delta _{2})}{\left|2\delta _{2}\right|}}&{\frac {x^{1}(t;t_{0},x_{0}+\delta _{3})-x^{1}(t;t_{0},x_{0}-\delta _{3})}{\left|2\delta _{3}\right|}}\\{\frac {x^{2}(t;t_{0},x_{0}+\delta _{1})-x^{2}(t;t_{0},x_{0}-\delta _{1})}{\left|2\delta _{1}\right|}}&{\frac {x^{2}(t;t_{0},x_{0}+\delta _{2})-x^{2}(t;t_{0},x_{0}-\delta _{2})}{\left|2\delta _{2}\right|}}&{\frac {x^{2}(t;t_{0},x_{0}+\delta _{3})-x^{2}(t;t_{0},x_{0}-\delta _{3})}{\left|2\delta _{3}\right|}}\\{\frac {x^{3}(t;t_{0},x_{0}+\delta _{1})-x^{3}(t;t_{0},x_{0}-\delta _{1})}{\left|2\delta _{1}\right|}}&{\frac {x^{3}(t;t_{0},x_{0}+\delta _{2})-x^{3}(t;t_{0},x_{0}-\delta _{2})}{\left|2\delta _{2}\right|}}&{\frac {x^{3}(t;t_{0},x_{0}+\delta _{3})-x^{3}(t;t_{0},x_{0}-\delta _{3})}{\left|2\delta _{3}\right|}}\end{pmatrix}},}
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boundary, without global transverse departure form the material vortex. (Exceptions are inviscid flows where such a global departure of LAVD level surfaces from a vortex is possible as fluid elements preserve their material rotation rate for all times). Remarkably, centers of rotationally coherent vortices (defined by local maxima of the LAVD field) can be proven to be the observed centers of attraction or repulsion for finite-size (inertial) particle motion in geophysical flows (see Fig. 11b). In three-dimensional flows, tubular level surfaces of the LAVD define initial positions of two-dimensional eddy boundary surfaces (see Fig. 11c) that remain rotationally coherent over a time intcenter|erval
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12796:. In two-dimensions, therefore, (polar) elliptic LCSs are simply closed level curves of the PRA, which turn out to be objective. In three dimensions, (polar) elliptic LCSs are toroidal or cylindrical level surfaces of the PRA, which are, however, not objective and hence will generally change in rotating frames. Coherent Lagrangian vortex boundaries can be visualized as outermost members of nested families of elliptic LCSs. Two- and three-dimensional examples of elliptic LCS revealed by tubular level surfaces of the PRA are shown in Fig. 10a-b.
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4333:{\displaystyle {\begin{aligned}\delta _{t_{0}}^{t_{1}}(x_{0})&=\lim _{\epsilon \to 0}{\frac {1}{\epsilon }}\max _{\left|\xi (t_{0})\right|=1}\left|\xi _{\epsilon }(t_{1};x_{0})\right|\\&=\max _{\left|\xi (t_{0})\right|=1}{\sqrt {\left\langle \nabla F_{t_{0}}^{t_{1}}(x_{0})\xi (t_{0}),\nabla F_{t_{0}}^{t_{1}}(x_{0})\xi (t_{0})\right\rangle }}\\&=\max _{\left|\xi (t_{0})\right|=1}{\sqrt {\left\langle \xi (t_{0}),C_{t_{0}}^{t_{1}}(x_{0})\xi (t_{0})\right\rangle }}\\\end{aligned}}}
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17389:. In contrast to hyperbolic LCSs, however, parabolic LCSs satisfy more robust boundary conditions: they remain stationary curves of the material-line-averaged shear functional even under variations to their endpoints. This explains the high degree of robustness and observability that jet cores exhibit in mixing. This is to be contrasted with the highly sensitive and fading footprint of hyperbolic LCSs away from strongly hyperbolic regions in diffusive tracer patterns.
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12496:{\displaystyle {\begin{aligned}\cos \theta _{t_{0}}^{t}&={\frac {1}{2}}\left(\sum _{i=1}^{3}{\frac {\left\langle \xi _{i},\nabla F_{t_{0}}^{t_{1}}\xi _{i}\right\rangle }{\sqrt {\lambda _{i}}}}-1\right),\\\sin \theta _{t_{0}}^{t}&={\frac {\left\langle \xi _{i},\nabla F_{t_{0}}^{t_{1}}\xi _{j}\right\rangle -\left\langle \xi _{j},\nabla F_{t_{0}}^{t_{1}}\xi _{i}\right\rangle }{2\epsilon _{ijk}e_{k}}},\qquad i\neq j,\end{aligned}}}
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11795:{\displaystyle {\begin{aligned}\cos \theta _{t_{0}}^{t_{1}}&={\frac {\langle \xi _{i},\nabla F_{t_{0}}^{t_{1}}\xi _{i}\rangle }{\sqrt {\lambda _{i}}}},\quad i=1\,\,or\,\,\,2,\\\sin \theta _{t_{0}}^{t_{1}}&=\left(-1\right)^{j}{\frac {\langle \xi _{i},\nabla F_{t_{0}}^{t_{1}}\xi _{j}\rangle }{\sqrt {\lambda _{j}}}},\qquad (i,j)=(1,2)\,\,or\,\,(2,1),\\\end{aligned}}}
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endpoints fixed. This is to be contrasted with parabolic LCSs (see below), which are also shearless LCSs but prevail as stationary curves to the shear functional even under arbitrary variations. As a consequence, individual trajectories are objective, and statements about the coherent structures they form should also be objective.
3278:. The heuristic element here is that instead of constructing a highly repelling material surface, one simply seeks points of large particle separation. Such a separation may well be due to strong shear along the set of points so identified; this set is not at all guaranteed to exert any normal repulsion on nearby trajectories.
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Figure 11: An elliptic
Lagrangian Coherent Structure (or LCS, in green, on the left) and its advected position under the flow map (on the right) of a chaotically forced ABC flow. Also shown in green is a circle of initial conditions placed around the LCS (on the left), advected for the same amount of
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Outermost complex tubular level curves of the LAVD define initial positions of rotationally coherent material vortex boundaries in two-dimensional unsteady flows (see Fig. 11a). By construction, these boundaries may exhibit transverse filamentation, but any developing filament keeps rotating with the
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Figure 11b: Materially advected rotationally coherent mesoscale eddy boundaries and eddy centers in the ocean, along with representative inertial particle trajectories initialised on the eddy boundaries. The eddy centers are obtained as local maxima of the LAVD field. As can be proven mathematically,
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As illustrated on the right, individual tracer trajectories forming coherent patterns are generally sensitive with respect to changes in their initial conditions and the system parameters. In contrast, the LCSs creating these trajectory patterns turn out to be robust and provide a simplified skeleton
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Individual trajectories in a model flow generally show vastly different behavior from trajectories starting from the same initial condition of the real flow. This is due to the inevitable accumulation of errors and uncertainties, as well as sensitive dependence on initial conditions, in any realistic
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As noted above under hyperbolic LCSs, a global variational approach has been developed in two dimensions to capture elliptic LCSs as closed stationary curves of the material-line-averaged
Lagrangian strain functional. Such curves turn out to be closed null-geodesics of the generalized Green–Lagrange
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Figure 11c: A rotationally coherent mesoscale eddy (yellow) in the
Southern Ocean State Estimate (SOSE) ocean model at t0 = May 15, 2006, computed as a tubular LAVD level surface over t1-t0=120 days. Also shown are nearby LAVD level surfaces to illustrate the rotational incoherence outside the eddy.
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In 3D flows, instead of solving the
Frobenius PDE (see table above) for hyperbolic LCSs, an easier approach is to construct intersections of hyperbolic LCSs with select 2D planes, and fit a surface numerically to a large number of such intersection curves. Let us denote the unit normal of a 2D plane
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Figure 3: Instantaneous streamlines and the evolution of trajectories starting from the interior of one of them in a linear solution of the Navier–Stokes equation. This dynamical system is classified as elliptic by a number of frame-dependent coherence diagnostics, such as the Okubo–Weiss criterion.
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of possible particle positions is a material configuration space. In this space, LCSs are material surfaces, formed by trajectories. Whether or not a material trajectory is contained in an LCS is a property that is independent of the choice of coordinates, and hence cannot depend of the observer. As
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than any of the neighboring material surfaces. Such LCSs, defined as extrema (or more generally, stationary surfaces) for a finite-time coherence property, will indeed serve as observed centerpieces of trajectory patterns. Examples of attracting, repelling and shearing LCSs are in a direct numerical
13307:, respectively. Just as the classic polar decomposition, the DPD is valid in any finite dimension. Unlike the classic polar decomposition, however, the dynamic rotation and stretch tensors are obtained from solving linear differential equations, rather than from matrix manipulations. In particular,
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eigenvalue field. This agrees with the conclusion of the local variational theory of LCSs. The geodesic approach, however, also sheds more light on the robustness of hyperbolic LCSs: hyperbolic LCSs only prevail as stationary curves of the averaged shear functional under variations that leave their
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FTLE ridges have proven to be a simple and efficient tool for the visualize hyperbolic LCSs in a number of physical problems, yielding intriguing images of initial positions of hyperbolic LCSs in different applications (see, e.g., Figs. 5a-b). However, FTLE ridges obtained over sliding time windows
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Fig. 2b: An attracting LCS is the locally most attracting material line (invariant manifold in the extended phase space of position and time), acting as the backbone curve of deforming tracer patterns over a finite time interval. In contrast, the unstable manifold of a saddle-type fixed point is an
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for fluid motion are well known to be frame-dependent, it might first seem counterintuitive to require frame-invariance for LCSs, which are composed of solutions of these frame-dependent equations. Recall, however, that the Newton and Navier–Stokes equations represent objective physical principles
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The level sets of the PRA are objective in two dimensions but not in three dimensions. An additional shortcoming of the polar rotation tensor is its dynamical inconsistency: polar rotations computed over adjacent sub-intervals of a total deformation do not sum up to the rotation computed for the
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For 3D flows, as in the case of hyperbolic LCSs, solving the
Frobenius PDE can be avoided. Instead, one can construct intersections of a tubular elliptic LCS with select 2D planes, and fit a surface numerically to a large number of these intersection curves. As for hyperbolic LCSs above, let us
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that exert a major influence on nearby trajectories over a time interval of interest. The type of this influence may vary, but it invariably creates a coherent trajectory pattern for which the underlying LCS serves as a theoretical centerpiece. In observations of tracer patterns in nature, one
3057:-frame. While this process adds new terms (inertial forces) to the equations of motion, these inertial terms arise precisely to ensure the invariance of material trajectories. Fully composed of material trajectories, LCSs remain invariant in the transformed equation of motion defined in the
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Figure 11a: Rotationally coherent mesoscale eddy boundaries in the ocean at time t0 = November 11, 2006, identified from satellite-based surface velocities, using the integration time t1-t0=90 days. The boundaries are identified as outermost closed contours of the LAVD with small convexity
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Elliptc LCSs are closed and nested material surfaces that act as building blocks of the
Lagrangian equivalents of vortices, i.e., rotation-dominated regions of trajectories that generally traverse the phase space without substantial stretching or folding. They mimic the behavior of
15724:{\displaystyle n_{\pm }(x_{0})={\sqrt {\frac {\sqrt {\lambda _{1}(x_{0})}}{{\sqrt {\lambda _{1}(x_{0})}}+{\sqrt {\lambda _{3}(x_{0})}}}}}\xi _{1}(x_{0})\pm {\sqrt {\frac {\sqrt {\lambda _{3}(x_{0})}}{{\sqrt {\lambda _{1}(x_{0})}}+{\sqrt {\lambda _{3}(x_{0})}}}}}\xi _{3}(x_{0}),}
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of the overall dynamics of the system. The robustness of this skeleton makes LCSs ideal tools for model validation, model comparison and benchmarking. LCSs can also be used for now-casting and even short-term forecasting of pattern evolution in complex dynamical systems.
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are shearless material surfaces that delineate cores of jet-type sets of trajectories. Such LCSs are characterized by both low stretching (because they are inside a non-stretching structure), but also by low shearing (because material shearing is minimal in jet cores).
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17519:. Fig. 14b shows an example of parabolic LCSs in Jupiter's atmosphere, located using this variational theory. The chevron-type shapes forming out of circular material blobs positioned along the jet core is characteristic of tracer deformation near parabolic LCSs.
16890:{\displaystyle \eta _{\lambda }^{\pm }(x_{0}):={\sqrt {\frac {\lambda _{2}(x_{0})-\lambda ^{2}}{\lambda _{2}(x_{0})-\lambda _{1}(x_{0})}}}\xi _{1}(x_{0})\pm {\sqrt {\frac {\lambda ^{2}-\lambda _{1}(x_{0})}{\lambda _{2}(x_{0})-\lambda _{1}(x_{0})}}}\xi _{2}(x_{0}),}
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referring to the
Euclidean matrix norm. As seen in Fig. 3, however, trajectories grow exponentially along a rotating line and shrink exponentially along another rotating line. In material terms, therefore, the flow is hyperbolic (saddle-type) in any frame.
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11135:, interpreted as the bulk solid-body rotation component of volume elements. In planar motions, this rotation is defined relative to the normal of the plane. In three dimensions, the rotation is defined relative to the axis defined by the eigenvector of
16344:. (Strictly speaking, the reduced shear ODE is not an ordinary differential equation, given that its right-hand side is not a vector field, but a direction field, which is generally not globally orientable). Intersections of tubular elliptic LCSs with
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9185:. These starting points serve are initial positions of exceptional saddle-type trajectories in the flow. An example of the local variational computation of a repelling LCS is shown in FIg. 8. The computational algorithm is available in LCS Tool.
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will generally be time-dependent, acting as the evolving skeletons of observed coherent trajectory patterns. Figure 2b shows the difference between an attracting LCS and a classic unstable manifold of a saddle point, for evolving times, in an
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Under variable endpoint boundary conditions, initial positions of parabolic LCSs turn out to be alternating chains of shrink lines and stretch lines that connect singularities of these line fields. These singularities occur at points where
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Physical phenomena governed by LCSs include floating debris, oil spills, surface drifters and chlorophyll patterns in the ocean; clouds of volcanic ash and spores in the atmosphere; and coherent crowd patterns formed by humans and animals.
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In two dimensions, parabolic LCSs are also solutions of the global shearless variational principle described above for hyperbolic LCSs. As such, parabolic LCSs are composed of shrink lines and stretch lines that represent geodesics of the
9559:. (Strictly speaking, this equation is not an ordinary differential equation, given that its right-hand side is not a vector field, but a direction field, which is generally not globally orientable). Intersections of hyperbolic LCSs with
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An alternative to the classic polar decomposition provides a resolution to both the non-objectivity and the dynamic inconsistency issue. Specifically, the
Dynamic Polar Decomposition (DPD) of the deformation gradient is also of the form
17954:
Olascoaga, M. J.; Beron-Vera, F. J.; Haller, G.; Triñanes, J.; Iskandarani, M.; Coelho, E. F.; Haus, B. K.; Huntley, H. S.; Jacobs, G.; Kirwan, A. D.; Lipphardt, B. L.; Özgökmen, T. M.; h. m. Reniers, A. J.; Valle-Levinson, A. (2013).
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15422:{\displaystyle \eta ^{\pm }(x_{0}):={\sqrt {\frac {\lambda _{2}(x_{0})-1}{\lambda _{2}(x_{0})-\lambda _{1}(x_{0})}}}\xi _{1}(x_{0})\pm {\sqrt {\frac {1-\lambda _{1}(x_{0})}{\lambda _{2}(x_{0})-\lambda _{1}(x_{0})}}}\xi _{2}(x_{0}),}
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Solving these local extremum principles for hyperbolic LCSs in two and three dimensions yields unit normal vector fields to which hyperbolic LCSs should everywhere be tangent. The existence of such normal surfaces also requires a
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Assume that the phase space of the underlying dynamical system is the material configuration space of a continuum, such as a fluid or a deformable body. For instance, for a dynamical system generated by an unsteady velocity field
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flow model. Yet an attracting LCS (such as the unstable manifold of a saddle point) is remarkably robust with respect to modelling errors and uncertainties. LCSs are, therefore, ideal tools for model validation and benchmarking
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planes, then fitting a surface to the limit cycle family yields a numerical approximation for 2D shear surface. A three-dimensional example of this local variational computation of an elliptic LCS is shown in Fig. 11.
2853:. As long as correctly transformed from one frame to the other, these equations generate physically the same material trajectories in the new frame. In fact, we decide how to transform the equations of motion from an
1764:-dimensional vector representing time-dependent translations. As a consequence, any self-consistent LCS definition or criterion should be expressible in terms of quantities that are frame-invariant. For instance, the
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Thus, attracting, repelling and shearing material surfaces are necessarily stacked on each other, i.e., occur in continuous families. This leads to the idea of seeking LCSs in finite-time dynamical systems as
1046:. Examples of such action are attraction, repulsion, or shear. In principle, any well-defined mathematical property qualifies that creates coherent patterns out of randomly selected nearby initial conditions.
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Figure 14b: Parabolic LCSs delineating unsteady
Lagrangian jet cores in the atmosphere of Jupiter. Also shown is the evolution of the elliptic LCS marking the boundary of the Great Red Spot. Video:Alireza
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2550:, the ability of these quantities to capture material mixing, transport, and coherence is limited and a priori unknown in any given frame. As an example, consider the linear unsteady fluid particle motion
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have been identified by some authors broadly with LCSs. In support of this identification, it is also often argued that the material flux over such sliding-window FTLE ridges should necessarily be small.
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Figure 6. FTLE ridges highlight both hyperbolic LCS and shearing material lines, such as the boundaries of a riverbed in a 3D model of the New River Inlet, Onslow, North
Carolina (Image: Allen Sanderson).
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973:, invariant manifolds and their associated material surfaces are abundant and generally undistinguished in the extended phase space. Only few of them will act as cores of coherent trajectory patterns.
16430:(GRS) of Jupiter. These LCSs were identified in a two-dimensional, unsteady velocity field reconstructed from a video footage of Jupiter. The color indicates the corresponding values of the parameter
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5115:. A more expedient approach is to compute the FTLE field from a simple finite-difference approximation to the deformation gradient. For example, in a three-dimenisonal flow, we launch a trajectory
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2515:, as well as the averages or eigenvalues of these quantities, are routinely used in heuristic LCS detection. While such quantities may effectively mark features of the instantaneous velocity field
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heavy particles (cyan) converge to the centers of anti-cyclonic (clockwise) eddies. Light particles (black) converge to the centers of cyclonic (clockwise) eddies. (Movie: Alireza Hadjighasem)
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FTLE ridges mark hyperbolic LCS positions, but also highlight surfaces of high shear. A convoluted mixture of both types of surfaces often arises in applications (see Fig. 6 for an example).
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are varied. For this reason, rotations predicted by the polar rotation tensor over varying time intervals divert from the experimentally observed mean material rotation of fluid elements.
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14802:. This result applies both in two- and three dimensions, and enables the computation of a well-defined, objective and dynamically consistent material rotation angle along any trajectory.
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seeks exceptionally coherent locations where this general trend fails, resulting in an order of magnitude smaller variability in shear or strain than what is normally expected across an
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Figure 2a: Hyperbolic LCS (attracting in red and repelling in blue) and elliptic LCS (boundaries of green regions) in a two-dimensional turbulence simulation. (Image: Mohammad Farazmand)
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Bozorgmagham, A. E.; Ross, S. D.; Schmale, D. G. (2013). "Real-time prediction of atmospheric Lagrangian coherent structures based on forecast data: An application and error analysis".
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requirement of continuum mechanics. The objectivity of LCSs requires them to be invariant with respect to all possible observer changes, i.e., linear coordinate changes of the form
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The local variational theory of hyperbolic LCSs builds on their original definition as strongest repelling or repelling material surfaces in the flow over the time interval
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Such null-geodesics can be proven to be tensorlines of the Cauchy–Green strain tensor, i.e., are tangent to the direction field formed by the strain eigenvector fields
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A sample application is shown in Fig. 9, where the sudden appearance of a hyperbolic core (strongest attracting part of a stretchline) within the oil spill caused the
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Figure 5b. Attracting (blue) and repelling (red) LCSs extracted as FTLE ridges from a two-dimensional simulation of a von Karman vortex street (Image: Jens Kasten)
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Beron-Vera, F. J.; Olascoaga, M. A. J.; Brown, M. G.; KoçAk, H.; Rypina, I. I. (2010). "Invariant-tori-like Lagrangian coherent structures in geophysical flows".
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A general material surface experiences shear and strain in its deformation, both of which depend continuously on initial conditions by the continuity of the map
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of interest. A challenge in that in each material volume element, all individual material fibers (tangent vectors to trajectories) perform different rotations.
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can further be factorized into two deformation gradients: one for a spatially uniform (rigid-body) rotation, and one that deviates from this uniform rotation:
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2052:{\displaystyle S(x,t)={\frac {1}{2}}\left(\nabla v(x,t)+(\nabla v(x,t))^{T}\right),\qquad W(x,t)={\frac {1}{2}}\left(\nabla v(x,t)-(\nabla v(x,t))^{T}\right),}
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dynamical system. In contrast, LCSs are only required to be invariant in the extended phase space. This means that even if the underlying dynamical system is
16476:-line) bounding the core of the GRS, as well as the outermost elliptic LCS serving as the Lagrangian vortex boundary of the GRS. Image:Alireza Hadjighasem.
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are fully captured by the singular values and singular vectors of the stretch tensors. The remaining factor in the deformation gradient is represented by
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Figure 10a. Elliptic LCSs revealed by closed level curves of the PRA distribution in a two-dimensional turbulence simulation. (Image: Mohammad Farazmand)
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is a positive parameter (Lagrange multiplier). The closed null-geodesics can be shown to coincide with limit cycles of the family of direction fields
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Figure 5a. Attracting (red) and repelling (blue) LCSs extracted as FTLE ridges from a two-dimensional turbulence experiment (Image: Manikandan Mathur)
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Fig. 11c Material advection of a rotationally coherent Lagrangian vortex and its core in the 3D SOSE model data set. (Animation: Alireza Hadjighasem)
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Norgard, G.; Bremer, P. T. (2012). "Second derivative ridges are straight lines and the implications for computing Lagrangian Coherent Structures".
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Bozorgmagham, A. E.; Ross, S. D. (2015). "Atmospheric Lagrangian coherent structures considering unresolved turbulence and forecast uncertainty".
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12030:{\displaystyle \theta _{t_{0}}^{t}=\left\pi +{\rm {sign\,}}\left(\sin \theta _{t_{0}}^{t}\right)\cos ^{-1}\left(\cos \theta _{t_{0}}^{t}\right).}
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invariant curve in the phase space, acting as the asymptotic target for tracer patterns over infinite time intervals. Image: Mohammad Farazmand.
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While LCSs generally exist in any dynamical system, their role in creating coherent patterns is perhaps most readily observable in fluid flows.
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Lipinski, D.; Mohseni, K. (2010). "A ridge tracking algorithm and error estimate for efficient computation of Lagrangian coherent structures".
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Haller, George; Hadjighasem, Alireza; Farazmand, Mohammad; Huhn, Florian (2016). "Defining Coherent Vortices Objectively from the Vorticity".
18489:(2005). "Definition and properties of Lagrangian coherent structures from finite-time Lyapunov exponents in two-dimensional aperiodic flows".
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Since both shearing and stretching are as low as possible along a parabolic LCS, one may seek initial positions of such material surfaces as
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The local variational theory of elliptic LCSs targets material surfaces that locally maximize material shear over the finite time interval
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corresponding to its unit eigenvalue. In higher-dimensional flows, the rotation tensor cannot be viewed as a rotation about a single axis.
10412:. There coherence can be approached either through their homogeneous material rotation or through their homogeneous stretching properties.
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14729:{\displaystyle \mathrm {LAVD} _{t_{0}}^{t_{1}}(x_{0}):=\int _{t_{0}}^{t_{1}}\left|\omega (x(s;x_{0}),s)-{\bar {\omega }}(s)\right|\,ds,}
14313:). The LAVD is defined as the trajectory-averaged magnitude of the deviation of the vorticity from its spatial mean. With the vorticity
9192:
Figure 8. A repelling LCS visualized as an FTLE ridge (left) and computed exactly as a shrink line (right), i.e., a solution of the ODE
219:
18671:
Schindler, B.; Peikert, R.; Fuchs, R.; Theisel, H. (2012). "Ridge Concepts for the Visualization of Lagrangian Coherent Structures".
11036:{\displaystyle C_{t_{0}}^{t_{1}}=^{T}\nabla F_{t_{0}}^{t_{1}}=U_{t_{0}}^{t_{1}}U_{t_{0}}^{t_{1}}=V_{t_{0}}^{t_{1}}V_{t_{0}}^{t_{1}},}
8489:
4473:
18747:"Erratum and addendum to "A variational theory of hyperbolic Lagrangian coherent structures" [Physica D 240 (2011) 574–598]"
18575:
13874:
4601:
3138:
can be defined as a locally strongest repelling material surface. Attracting and repelling LCSs together are usually referred to as
18303:
Mathur, M.; Haller, G.; Peacock, T.; Ruppert-Felsot, J.; Swinney, H. (2007). "Uncovering the Lagrangian Skeleton of Turbulence".
17545:
16484:
13994:
10405:
6917:
19596:
Green, M. A.; Rowley, C. W.; Haller, G. (2007). "Detection of Lagrangian coherent structures in three-dimensional turbulence".
17328:. A geophysical example of a parabolic LCS (generalized jet core) revealed as a trench of the FTLE field is shown in Fig. 14a.
3143:
18956:
Farazmand, Mohammad; Haller, George (2016). "Polar rotation angle identifies elliptic islands in unsteady dynamical systems".
10119:{\displaystyle D_{t_{0}}^{t_{1}}(x_{0})={\frac {1}{2}}\left,\qquad \Omega ={\begin{pmatrix}0&-1\\1&0\\\end{pmatrix}}.}
19491:
19362:
18688:
18452:
18156:
17396:
8184:
8024:
18896:
Farazmand, M.; Blazevski, D.; Haller, G. (2014). "Shearless transport barriers in unsteady two-dimensional flows and maps".
4896:
2841:
101:
readily identifies coherent features, but it is often the underlying structure creating these features that is of interest.
13035:
deficiency. Also shown in the background is the contour plot of the LAVD field for reference. (Image: Alireza Hadjighasem)
18425:
Sanderson, A. R. (2014). "An Alternative Formulation of Lyapunov Exponents for Computing Lagrangian Coherent Structures".
7938:
15925:
10706:
7163:
3103:
737:
718:{\displaystyle {\mathcal {M}}=\{(x,t)\in {\mathcal {P}}\times {\mathcal {I}}\,\colon ^{-1}(x)\in {\mathcal {M}}(t_{0})\}}
18129:
Ali, S.; Shah, M. (2007). "A Lagrangian Particle Dynamics Approach for Crowd Flow Segmentation and Stability Analysis".
10424:
as a tubular material surface along which small material volumes complete the same net rotation over the time intervall
8381:
7863:
3077:-frame of reference. Consequently, any self-consistent LCS definition or detection method must also be frame-invariant.
2702:{\displaystyle {\dot {x}}=v(x,t)={\begin{pmatrix}\sin {4t}&2+\cos {4t}\\-2+\cos {4t}&-\sin {4t}\end{pmatrix}}x,}
349:
14316:
13467:
13310:
12543:
9828:
9599:
planes, then fitting a surface to the curve family so obtained yields a numerical approximation of a 2D repelling LCS.
2277:{\displaystyle {\tilde {S}}(y,t)=Q(t)^{T}S(x,t)Q(t),\qquad {\tilde {W}}(y,t)=Q(t)^{T}S(x,t)Q(t)-Q(t)^{T}{\dot {Q}}(t).}
1208:. They are not only special, but even locally unique in the phase space: no continuous family of attractors may exist.
45:
19411:
12720:{\displaystyle \left_{jk}=\left\langle \xi _{j},\nabla F_{t_{0}}^{t_{1}}\xi _{k}\right\rangle /{\sqrt {\lambda _{k}}}}
2715:. The (frame-dependent) Okubo-Weiss criterion classifies the whole domain in this flow as elliptic (vortical) because
10286:
10178:
9195:
8931:
8715:
7758:
7666:
4996:
63:
18840:
Blazevski, D.; Haller, G. (2014). "Hyperbolic and elliptic transport barriers in three-dimensional unsteady flows".
15069:
15012:
14926:
11210:
7609:
7548:
3017:
to hold for all times. Temporal differentiation of this identity and substitution into the original equation in the
19475:
19179:
Hadjighasem, A.; Haller, G. (2016). "Geodesic Transport Barriers in Jupiter's Atmosphere: A Video-Based Analysis".
17522:
16928:
1572:
3198:
of repelling LCSs as set of initial conditions at which infinitesimal perturbations to trajectories starting from
17260:
13238:
9835:
7393:
There are several other types LCSs (elliptic and parabolic) beyond the hyperbolic LCSs highlighted by FTLE ridges
5060:
1449:
1424:
1420:
41:
18180:
Haller, G. (2001). "Lagrangian structures and the rate of strain in a partition of two-dimensional turbulence".
18258:
Haller, G. (2001). "Distinguished material surfaces and coherent structures in three-dimensional fluid flows".
10646:{\displaystyle \nabla F_{t_{0}}^{t_{1}}=R_{t_{0}}^{t_{1}}U_{t_{0}}^{t_{1}}=V_{t_{0}}^{t_{1}}R_{t_{0}}^{t_{1}},}
9785:
9752:
9719:
9682:
9649:
7291:
The "FTLE ridge=LCS" identification, however, suffers form the following conceptual and mathematical problems:
34:
14253:
12854:
17998:"The impact of advective transport by the South Indian Ocean Countercurrent on the Madagascar plankton bloom"
17016:
312:
19543:
18786:
Farazmand, M.; Haller, G. (2012). "Computing Lagrangian coherent structures from their variational theory".
4598:. As this relative stretching tends to grow rapidly, it is more convenient to work with its growth exponent
3412:
2802:
17621:
15834:
15791:
15748:
10473:
To obtain a well-defined bulk rotation for each material element, one may employ the unique left and right
8624:
8581:
8507:
7823:
7505:
5200:
4843:{\displaystyle \mathrm {FTLE} _{t_{0}}^{t_{1}}(x_{0})={\frac {1}{2(t_{1}-t_{0})}}\log \lambda _{n}(x_{0}).}
3241:
3201:
3161:
1628:
1159:
1119:
892:
517:
3370:
3089:
Figure 4. Attracting and repelling LCSs in the extended phase space of a two-dimensional dynamical system.
2476:
19672:
17616:
12760:
10347:
10239:
9579:
are fastest contracting reduced shrink lines. Determining such shrink lines in a smooth family of nearby
9256:
9145:
9102:
7295:
Second-derivative FTLE ridges are necessarily straight lines and hence do not exist in physical problems.
7023:
Lagrangian objects, such as hyperbolic LCSs. Indeed, a locally strongest repelling material surface over
3480:
2845:
2712:
487:
414:
19137:
Haller, G.; Beron-Vera, F. J. (2012). "Geodesic theory of transport barriers in two-dimensional flows".
17656:
Haller, G.; Yuan, G. (2000). "Lagrangian coherent structures and mixing in two-dimensional turbulence".
16973:
2949:
19652:
17346:
17072:
14979:
14211:
14172:
12808:
12042:
11368:
11272:
11138:
11092:
11046:
10656:
9845:
8348:
8265:
8105:
4476:. One then concludes that the maximum relative stretching experienced along a trajectory starting from
1313:
1059:
992:
17691:
Peacock, T.; Haller, G. (2013). "Lagrangian coherent structures: The hidden skeleton of fluid flows".
16364:
are limit cycles of the reduced shear ODE. Determining such limit cycles in a smooth family of nearby
5265:
5118:
3577:
3548:
3315:
19224:
Haller, G.; Beron-Vera, F. J. (2013). "Coherent Lagrangian vortices: The black holes of turbulence".
16187:
15881:
12506:
10131:
9398:
8887:
8671:
3755:{\displaystyle {\xi }_{\epsilon }(t_{1};x_{0})=\nabla F_{t_{0}}^{t_{1}}(x_{0})\epsilon {\xi }(t_{0})}
163:
19618:
18435:
18280:
1398:
1346:
1289:
1218:
1095:
1025:
862:
557:
139:
129:
Figure 1: An invariant manifold in the extended phase space, formed by an evolving material surface.
19449:
18139:
18074:"Lagrangian coherent structures are associated with fluctuations in airborne microbial populations"
17606:
16555:
14494:{\displaystyle {\bar {\omega }}(t)={\frac {\int _{U(t)}\omega (x,t)\,dV}{\mathrm {vol} \,(U(t))}},}
13669:
13195:
9610:
2401:
1250:
1244:
1050:
1022:
should exert a sustained and consistent action on nearby trajectories throughout the time interval
444:
19014:
Haller, George (2016). "Dynamic rotation and stretch tensors from a dynamic polar decomposition".
9749:
strip. Specifically, the geodesic theory searches for LCSs as special material lines around which
7229:. Nonetheless, evolving second-derivative FTLE ridges computed over sliding intervals of the form
4860:
Therefore, one expects hyperbolic LCSs to appear as codimension-one local maximizing surfaces (or
2896:
19657:
19505:
19465:"Development of an Efficient and Flexible Pipeline for Lagrangian Coherent Structure Computation"
14162:{\displaystyle {\dot {\beta }}=\Phi _{t}^{t_{0}}{\bar {W}}\left(t\right)\Phi _{t_{0}}^{t}\beta .}
6762:
3512:
16902:
16453:
11196:
Figure 10b. Elliptic LCSs revealed by closed level curves of the PRA distribution in the steady
8453:
is pointwise maximal (minimal) with respect to perturbations of the initial normal vector field
19613:
18430:
18275:
18134:
17957:"Drifter motion in the Gulf of Mexico constrained by altimetric Lagrangian coherent structures"
14872:
13798:
As a spatially independent rigid-body rotation, the proper orthogonal relative rotation tensor
12799:
9142:. Attracting LCSs are obtained as most attracting stretch lines, starting from local minima of
6816:
4866:) of the FTLE field. This expectation turns out to be justified in the majority of cases: time
3284:
2360:
is automatically frame-invariant. In contrast, an LCS approach depending on the eigenvalues of
1692:
17212:
17138:
17118:
17048:
16433:
16409:
16397:
16230:
16160:
16113:
9441:
9371:
9324:
2439:
19667:
19322:"Zonal Jets as Meridional Transport Barriers in the Subtropical and Polar Lower Stratosphere"
17915:"Surface coastal circulation patterns by in-situ detection of Lagrangian coherent structures"
13869:
is dynamically consistent, serving as the deformation gradient of the relative rotation flow
7130:
14770:
2518:
2363:
2328:
2293:
1805:
1770:
19605:
19568:
19333:
19286:
19243:
19146:
19103:
19033:
18975:
18911:
18855:
18795:
18758:
18716:
18645:
18602:
18545:
18498:
18397:
18358:
18312:
18267:
18224:
18189:
18085:
18046:
18009:
17968:
17926:
17867:
17828:
17793:
17758:
17700:
17665:
17611:
17495:
17468:
17185:
17158:
13183:{\displaystyle \nabla F_{t_{0}}^{t}=O_{t_{0}}^{t}M_{t_{0}}^{t}=N_{t_{0}}^{t}O_{t_{0}}^{t},}
13003:
12976:
12903:
12733:
11345:
11318:
8547:
8456:
7731:
7478:
7451:
6789:
5173:
4969:
4869:
4479:
3765:
3453:
1566:
18530:
17996:
Huhn, F.; von Kameke, A.; Pérez-Muñuzuri, V.; Olascoaga, M. J.; Beron-Vera, F. J. (2012).
16367:
16347:
16140:
16093:
14741:
9602:
9582:
9562:
9351:
9304:
9099:
Repelling LCSs are obtained as most repelling shrink lines, starting from local maxima of
9082:{\displaystyle \left\langle \nabla \times \xi _{3}(x_{0}),\xi _{3}(x_{0})\right\rangle =0}
8866:{\displaystyle \left\langle \nabla \times \xi _{1}(x_{0}),\xi _{1}(x_{0})\right\rangle =0}
2946:
precisely by upholding that trajectories are mapped into trajectories, i.e., by requiring
1718:
1663:
8:
19662:
18579:
10474:
3097:
is by requiring it to be a locally strongest attracting material surface in the extended
19609:
19572:
19533:
19337:
19290:
19247:
19150:
19107:
19037:
18979:
18915:
18859:
18799:
18762:
18720:
18707:
Haller, G. (2011). "A variational theory of hyperbolic Lagrangian Coherent Structures".
18649:
18606:
18549:
18502:
18401:
18362:
18316:
18271:
18228:
18193:
18089:
18050:
18013:
17972:
17930:
17871:
17832:
17797:
17770:
17762:
17704:
17669:
15733:
the criteria for two- and three-dimensional elliptic LCSs can be summarized as follows:
12757:
positions of elliptic LCSs are visualized as tubular level sets of the PRA distribution
19631:
19584:
19259:
19233:
19206:
19188:
19119:
19093:
19049:
19023:
18991:
18965:
18927:
18901:
18871:
18845:
18486:
18458:
18240:
18162:
17890:
17855:
12537:
10409:
7359:
7002:
3060:
3040:
3020:
2876:
2856:
1765:
1747:
1547:
1430:
1389:
1201:
728:
18289:
17677:
17248:
14880:
14818:
14504:
12930:
10427:
8302:
8138:
7405:
7301:
7232:
7072:
7026:
6859:
19497:
19487:
19302:
19263:
18811:
18684:
18618:
18448:
18328:
18152:
18111:
17895:
17537:
17338:
17331:
9839:
5054:
4693:
3147:
2287:
1212:
1197:
19588:
19210:
19123:
19053:
18995:
18931:
18875:
18349:
Haller, G. (2002). "Lagrangian coherent structures from approximate velocity data".
18244:
17465:, and hence no infinitesimal deformation takes place between the two time instances
6842:
19635:
19623:
19576:
19479:
19341:
19294:
19251:
19198:
19154:
19111:
19041:
18983:
18919:
18863:
18803:
18766:
18724:
18676:
18653:
18610:
18553:
18506:
18462:
18440:
18405:
18366:
18320:
18285:
18232:
18197:
18166:
18144:
18101:
18093:
18058:
18054:
18017:
17976:
17934:
17885:
17875:
17836:
17801:
17766:
17708:
17673:
3762:. Then the maximum relative stretching of infinitesimal perturbations at the point
3153:
1054:
885:
97:
19366:
18324:
18037:
Peng, J.; Peterson, R. (2012). "Attracting structures in volcanic ash transport".
12039:
For three-dimensional flows, the PRA can again be computed from the invariants of
8496:
Hyperbolic LCS conditions from local variational theory in dimensions n=2 and n=3
2325:, and hence an LCS approach depending only on the eigenvalues and eigenvectors of
19557:"Predicting transport by Lagrangian coherent structures with a high-order method"
19483:
18680:
15737:
Ellipitic LCS conditions from local variational theory in dimensions n=2 and n=3
13656:{\displaystyle {\dot {b}}=O_{t}^{t_{0}}S\left(x(t;x_{0}),t\right)O_{t_{0}}^{t}b.}
9188:
40:
It may require cleanup to comply with Knowledge's content policies, particularly
19158:
18987:
18923:
18867:
18771:
18746:
18728:
18657:
18510:
17840:
17805:
14767:
denoting the (possibly time-varying) domain of definition of the velocity field
19396:
19045:
18444:
17552:
17230:
16427:
16072:{\displaystyle \langle \nabla \times n_{\pm }(x_{0}),n_{\pm }(x_{0})\rangle =0}
8492:
in the three-dimensional case. All these results can be summarized as follows:
769:
481:
19627:
19580:
18384:
Kasten, J.; Petz, C.; Hotz, I.; Hege, H. C.; Noack, B. R.; Tadmor, G. (2010).
18236:
11043:
the local material straining described by the eigenvalues and eigenvectors of
2792:{\displaystyle q={\frac {1}{2}}({\vert S\vert }^{2}-{\vert W\vert }^{2})<0}
19646:
19501:
19470:. In Peer-Timo Bremer; Ingrid Hotz; Valerio Pascucci; Ronald Peikert (eds.).
18148:
17341:
7603:
7543:
7383:
In particular, a broadly referenced material flux formula for FTLE ridges is
6751:
4993:
positions of attracting LCSs are marked by ridges of the backward FTLE field
1455:
19415:
17880:
14873:
Stretching-based coherence from a local variational approach: Shear surfaces
12973:, these piecewise best fits do not form a family of rigid-body rotations as
12800:
Rotational coherence from the Lagrangian-averaged vorticity deviation (LAVD)
11365:. For two-dimensional flows, the PRA can be computed from the invariants of
4591:{\displaystyle \delta _{t_{0}}^{t_{1}}(x_{0})={\sqrt {\lambda _{n}(x_{0})}}}
3085:
19556:
19346:
19321:
19306:
18815:
18622:
18332:
18115:
17899:
17601:
16398:
Stretching-based coherence from a global variational approach: lambda-lines
13030:
10415:
93:
17065:-lines. Remarkably, they are initial positions of material lines that are
7397:
3238:
grow locally at the highest rate relative to trajectories starting off of
216:, consider a non-autonomous dynamical system defined through the flow map
19255:
19115:
18022:
17997:
17981:
17956:
17939:
17914:
17010:
for shearlines obtained above from the local variational theory of LCSs.
6850:
3142:, as they provide a finite-time generalization of the classic concept of
3098:
1393:
732:
134:
19320:
Beron-Vera, F. J.; Olascoaga, M. A. J.; Brown, M. G.; Koçak, H. (2012).
17583:
17559:
11184:
8480:. As earlier, we refer to repelling and attracting LCSs collectively as
18106:
17596:
17566:
12583:
is the eigenvector corresponding to the unit eigenvector of the matrix
9603:
Global variational approach: Shrink- and stretchlines as null-geodesics
19381:
19298:
19202:
18807:
18614:
18557:
18410:
18385:
18370:
18201:
18097:
17712:
17576:
9348:. The intersection curve of a 2D repelling LCS surface with the plane
8017:
Figure 7. Linearized flow geometry along an evolving material surface.
5057:
is solving a linear differential equation for the linearized flow map
4966:. By applying the same argument in backward time, we obtain that time
4852:
1204:
satisfying such an attraction property over infinite times are called
852:{\displaystyle {\mathcal {M}}(t)=F_{t_{0}}^{t}({\mathcal {M}}(t_{0}))}
17995:
17913:
Nencioli, F.; d'Ovidio, F.; Doglioli, A. M.; Petrenko, A. A. (2011).
8295:
strictly attracts nearby trajectories along its normal directions. A
7935:, the advected normal also develops a tangential component of length
5197:
of a grid of initial conditions. Using the coordinate representation
1205:
966:{\displaystyle {\mathcal {M}}\in {\mathcal {P}}\times {\mathcal {I}}}
18073:
17912:
8135:
strictly repels nearby trajectories by the end of the time interval
1715:
proper orthogonal matrix representing time-dependent rotations; and
19098:
19028:
18970:
17249:
Diagnostic approach: Finite-time Lyapunov exponents (FTLE) trenches
16388:
13862:{\displaystyle \Phi _{t_{0}}^{t}=\partial _{\alpha _{0}}\alpha (t)}
13789:{\displaystyle O_{t_{0}}^{t}=\Phi _{t_{0}}^{t}\Theta _{t_{0}}^{t}.}
11197:
4465:{\displaystyle C_{t_{0}}^{t_{1}}=\left^{T}\nabla F_{t_{0}}^{t_{1}}}
2831:
125:
19238:
19193:
18906:
18850:
17332:
Global variational approach: Heteroclinic chains of null-geodesics
17209:. As an example, Fig. 13 shows elliptic LCSs identified as closed
14805:
10420:
As a simplest approach to rotational coherence, one may define an
76:
18302:
17953:
16137:. Again, the intersection curves of elliptic LCSs with the plane
13039:
3093:
Motivated by the above discussion, the simplest way to define an
1156:
are carried by the flow into even smaller final perturbations to
302:{\displaystyle F_{t_{0}}^{t}\colon x_{0}\mapsto x(t,t_{0},x_{0})}
19555:
Salman, H.; Hesthaven, J. S.; Warburton, T.; Haller, G. (2006).
19430:
17856:"Forecasting sudden changes in environmental pollution patterns"
14247:
around its own axis of rotation is dynamically consistent. This
9831:
defined by the deformation field—hence the name of this theory.
6813:
coordinate direction. For two-dimensional flows, only the first
3154:
Diagnostic approach: Finite-time Lyapunov exponent (FTLE) ridges
1243:(i.e., locally unique) material surfaces. This follows from the
18131:
2007 IEEE Conference on Computer Vision and Pattern Recognition
17254:
16333:{\displaystyle x_{0}^{\prime }=n_{\pm }(x_{0})\times n_{\Pi },}
11804:
which yield a four-quadrant version of the PRA via the formula
9546:{\displaystyle x_{0}^{\prime }=\xi _{3}(x_{0})\times n_{\Pi },}
2059:
transform under Euclidean changes of frame into the quantities
1535:{\displaystyle v=v(x,t),\qquad x\in U\subset \mathbb {R} ^{3},}
19554:
19083:
11192:
4685:{\displaystyle (\log {\delta _{t_{0}}^{t_{1}}})/(t_{1}-t_{0})}
1367:, then so will any sufficiently close other material surface.
19319:
19276:
19174:
19172:
19170:
19168:
14864:
14305:
is also objective, and turns out to equal to one half of the
12805:
full-time interval of the same deformation. Therefore, while
8013:
4862:
1375:
material surfaces that exhibit a coherence-inducing property
18670:
17821:
Communications in Nonlinear Science and Numerical Simulation
7380:
Lagrangian and the flux through them is generally not small.
889:(see Fig. 1). Since any choice of the initial condition set
16545:{\displaystyle {\frac {1}{2}}(C_{t_{0}}^{t_{1}}-\lambda I)}
14055:{\displaystyle \Theta _{t_{0}}^{t}=D_{\beta _{0}}\beta (t)}
19472:
Topological Methods in Data Analysis and Visualization III
19165:
18215:
Haller, G. (2005). "An objective definition of a vortex".
13378:
is the deformation gradient of the purely rotational flow
9827:). Such LCSs turn out to be null-geodesics of appropriate
6992:{\displaystyle \mathrm {FTLE} _{t_{0}+T}^{t_{1}+T}(x_{0})}
989:
In order to create a coherent pattern, a material surface
19217:
19130:
18673:
Topological Methods in Data Analysis and Visualization II
18531:"Lagrangian coherent structures in n-dimensional systems"
17812:
17531:
14923:
of interest. This means that at initial point each point
13535:
is the deformation gradient of the purely straining flow
7860:. Therefore, in addition to a normal component of length
3574:. This perturbation generally grows along the trajectory
1383:
19463:
Ameli, Siavash; Desai, Yogin; Shadden, Shawn C. (2014).
19279:
Chaos: An Interdisciplinary Journal of Nonlinear Science
18895:
18788:
Chaos: An Interdisciplinary Journal of Nonlinear Science
18595:
Chaos: An Interdisciplinary Journal of Nonlinear Science
18078:
Chaos: An Interdisciplinary Journal of Nonlinear Science
18065:
13991:
In contrast, the proper orthogonal mean rotation tensor
10416:
Rotational coherence from the polar rotation angle (PRA)
9815:
variability either in the material-line averaged shear (
2286:
A Euclidean frame change is, therefore, equivalent to a
1343:
attracts all nearby trajectories over the time interval
981:
976:
18071:
17847:
17783:
17777:
17458:{\displaystyle \lambda _{1}(x_{0})=\lambda _{2}(x_{0})}
16406:
Figure 13. Nested family of elliptic LCSs, obtained as
13455:{\displaystyle {\dot {a}}=W\left(x(t;x_{0}),t\right)a,}
11315:
for a volume element centered at the initial condition
11204:
In two and three dimensions, therefore, there exists a
10792:
Since the Cauchy–Green strain tensor can be written as
8255:{\displaystyle \rho _{t_{0}}^{t_{1}}(x_{0},n_{0})<1}
8095:{\displaystyle \rho _{t_{0}}^{t_{1}}(x_{0},n_{0})>1}
7542:(cf. Fig. 6). By the invariance of material lines, the
7398:
Local variational approach: Shrink and stretch surfaces
18072:
Tallapragada, P.; Ross, S. D.; Schmale, D. G. (2011).
14062:
is the deformation gradient of the mean-rotation flow
11269:
that characterises the material rotation generated by
10079:
6851:
Issues with inferring hyperbolic LCSs from FTLE ridges
5373:
4959:{\displaystyle \mathrm {FTLE} _{t_{0}}^{t_{1}}(x_{0})}
2600:
33:
A major contributor to this article appears to have a
18030:
17749:
Haller, G. (2015). "Lagrangian Coherent Structures".
17651:
17649:
17647:
17645:
17643:
17641:
17639:
17637:
17498:
17471:
17399:
17349:
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17215:
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17075:
17051:
17019:
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16586:
16558:
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16436:
16412:
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16163:
16143:
16116:
16096:
15995:
15928:
15884:
15837:
15794:
15751:
15435:
15137:
15072:
15015:
14982:
14929:
14883:
14821:
14773:
14744:
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14507:
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14214:
14175:
14070:
13997:
13877:
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13713:
13672:
13543:
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13386:
13313:
13241:
13198:
13057:
13006:
12979:
12933:
12906:
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12811:
12763:
12736:
12589:
12546:
12509:
12093:
12045:
11812:
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11371:
11348:
11321:
11275:
11213:
11141:
11095:
11049:
10798:
10709:
10659:
10485:
10430:
10350:
10289:
10242:
10181:
10134:
9896:
9848:
9788:
9755:
9722:
9685:
9652:
9613:
9585:
9565:
9482:
9444:
9401:
9374:
9354:
9327:
9307:
9259:
9198:
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9105:
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8934:
8890:
8785:
8718:
8674:
8627:
8584:
8550:
8510:
8459:
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8351:
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8187:
8141:
8108:
8027:
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7866:
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7075:
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7005:
6920:
6862:
6819:
6792:
6765:
5323:
5268:
5203:
5176:
5121:
5063:
4999:
4972:
4899:
4872:
4704:
4604:
4509:
4482:
4348:
3797:
3768:
3635:
3580:
3551:
3515:
3483:
3456:
3415:
3373:
3318:
3287:
3244:
3204:
3164:
3106:
3063:
3043:
3023:
2952:
2899:
2879:
2859:
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2558:
2521:
2479:
2442:
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2366:
2331:
2296:
2065:
1843:
1808:
1773:
1750:
1721:
1695:
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1631:
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1476:
1433:
1401:
1349:
1316:
1292:
1253:
1221:
1162:
1122:
1098:
1062:
1028:
995:
935:
895:
865:
778:
740:
586:
560:
520:
490:
447:
417:
352:
315:
222:
166:
142:
18528:
18524:
18522:
18520:
18484:
18480:
18478:
18476:
18474:
18472:
18386:"Lagrangian feature extraction of the cylinder wake"
17947:
16227:
of the LCS. As a consequence, an intersection curve
15429:
and the three-dimensional shear normal vector field
15066:
is the plane along which the local Lagrangian shear
9438:
of the LCS. As a consequence, an intersection curve
8003:{\displaystyle \sigma _{t_{0}}^{t_{1}}(x_{0},n_{0})}
7502:
denote a unit normal to an initial material surface
4893:
positions of repelling LCSs are marked by ridges of
18529:Lekien, F.; Shadden, S. C.; Marsden, J. E. (2007).
17906:
15976:{\displaystyle x_{0}^{\prime }=\eta ^{\pm }(x_{0})}
15131:Introducing the two-dimensional shear vector field
10774:{\displaystyle U_{t_{0}}^{t_{1}},V_{t_{0}}^{t_{1}}}
9712:variation within such a strip. The two-dimensional
7222:{\displaystyle \mathrm {FTLE} _{t_{0}+T}^{t_{1}+T}}
3127:{\displaystyle {\mathcal {P}}\times {\mathcal {I}}}
3037:-frame then yields the transformed equation in the
761:{\displaystyle {\mathcal {P}}\times {\mathcal {I}}}
18383:
17634:
17511:
17484:
17457:
17381:
17320:
17221:
17201:
17174:
17147:
17127:
17107:
17057:
17037:
17002:
16962:
16917:
16889:
16570:
16544:
16468:
16442:
16418:
16376:
16356:
16332:
16255:
16219:
16176:
16149:
16129:
16102:
16071:
15975:
15913:
15863:
15820:
15777:
15723:
15421:
15120:
15058:
15001:
14968:
14915:
14853:
14794:
14759:
14728:
14539:
14493:
14367:
14297:
14239:
14200:
14161:
14054:
13981:
13861:
13788:
13697:
13655:
13527:
13454:
13370:
13291:
13223:
13182:
13019:
12992:
12965:
12919:
12892:
12843:
12788:
12749:
12719:
12575:
12528:
12495:
12077:
12029:
11794:
11403:
11357:
11334:
11307:
11261:
11173:
11127:
11081:
11035:
10773:
10691:
10645:
10462:
10379:
10336:
10271:
10228:
10163:
10118:
9880:
9807:
9774:
9741:
9704:
9671:
9646:. The averaged strain and shear within a strip of
9638:
9591:
9571:
9545:
9466:
9430:
9387:
9360:
9340:
9313:
9288:
9245:
9177:
9134:
9081:
8981:
8919:
8865:
8765:
8703:
8653:
8610:
8568:
8536:
8472:
8446:{\displaystyle \rho _{t_{0}}^{t_{1}}(x_{0},n_{0})}
8445:
8370:
8337:
8287:
8254:
8173:
8127:
8094:
8002:
7928:{\displaystyle \rho _{t_{0}}^{t_{1}}(x_{0,}n_{0})}
7927:
7852:
7812:
7747:
7720:
7655:
7594:
7534:
7494:
7467:
7440:
7368:
7348:
7279:
7221:
7152:
7119:
7061:
7011:
6991:
6906:
6831:
6805:
6778:
6741:
5309:
5254:
5189:
5162:
5107:
5042:
4985:
4958:
4885:
4842:
4684:
4590:
4495:
4464:
4332:
3781:
3754:
3621:
3566:
3537:
3501:
3469:
3442:
3401:
3359:
3304:
3270:
3230:
3190:
3126:
3069:
3049:
3029:
3009:
2938:
2885:
2865:
2819:
2791:
2711:which is an exact solution of the two-dimensional
2701:
2542:
2507:
2465:
2428:
2387:
2352:
2317:
2276:
2051:
1829:
1794:
1756:
1736:
1707:
1681:
1652:
1617:
1556:
1534:
1439:
1411:
1359:
1335:
1302:
1278:
1231:
1188:
1148:
1108:
1081:
1038:
1014:
965:
921:
875:
851:
760:
717:
570:
546:
506:
472:
433:
404:{\displaystyle x(t,t_{0},x_{0})\in {\mathcal {P}}}
403:
338:
301:
208:
152:
19595:
19462:
19178:
18740:
18738:
18517:
18469:
14368:{\displaystyle \omega (x,t)=\nabla \times v(x,t)}
13528:{\displaystyle M_{t_{0}}^{t}=\nabla _{b_{0}}b(t)}
13371:{\displaystyle O_{t_{0}}^{t}=\nabla _{a_{0}}a(t)}
12576:{\displaystyle \mathbf {e} =\left\{e_{k}\right\}}
9679:-close material lines, therefore, typically show
5317:, we approximate the gradient of the flow map as
3450:be a small perturbation to the initial condition
1380:simulation of 2D turbulence are shown in Fig.2a.
19644:
19409:
19223:
19136:
18951:
18949:
18947:
18945:
18943:
18941:
18891:
18889:
18887:
18885:
18835:
18833:
18831:
18829:
18827:
18825:
17818:
4185:
3982:
3881:
3855:
2398:A number of frame-dependent quantities, such as
1049:Most such properties can be expressed by strict
18955:
18839:
18785:
18744:
18592:
18122:
17989:
17860:Proceedings of the National Academy of Sciences
17853:
10337:{\displaystyle x_{0}^{\prime }=\xi _{2}(x_{0})}
10229:{\displaystyle x_{0}^{\prime }=\xi _{1}(x_{0})}
9246:{\displaystyle x_{0}^{\prime }=\xi _{1}(x_{0})}
8982:{\displaystyle x_{0}^{\prime }=\xi _{1}(x_{0})}
8766:{\displaystyle x_{0}^{\prime }=\xi _{2}(x_{0})}
7813:{\displaystyle \nabla F_{t_{0}}^{t_{1}}(x_{0})}
7721:{\displaystyle \nabla F_{t_{0}}^{t_{1}}(x_{0})}
7298:FTLE ridges computed over sliding time windows
6914:do not form material surfaces. Thus, ridges of
5043:{\displaystyle \mathrm {FTLE} _{t_{1}}^{t_{0}}}
19313:
19270:
19079:
19077:
19075:
19073:
19071:
19069:
19067:
19065:
19063:
19016:Journal of the Mechanics and Physics of Solids
19009:
19007:
19005:
18735:
18675:. Mathematics and Visualization. p. 221.
18569:
18567:
16426:-lines, forming transport barriers around the
15121:{\displaystyle \sigma _{t_{0}}^{t_{1}}(x_{0})}
15059:{\displaystyle T_{x_{0}}{\mathcal {M}}(t_{0})}
14969:{\displaystyle x_{0}\in {\mathcal {M}}(t_{0})}
13982:{\displaystyle {\dot {\alpha }}=\left\alpha .}
11342:. This PRA is well-defined up to multiples of
11262:{\displaystyle \theta _{t_{0}}^{t_{1}}(x_{0})}
7656:{\displaystyle T_{x_{1}}{\mathcal {M}}(t_{1})}
7595:{\displaystyle T_{x_{0}}{\mathcal {M}}(t_{0})}
6839:minor matrix of the above matrix is relevant.
3158:Heuristically, one may seek initial positions
1660:is the vector of the transformed coordinates;
16:Distinguished surfaces of dynamic trajectories
18938:
18882:
18822:
18779:
18702:
18700:
18664:
18635:
18573:
18418:
18344:
18342:
17744:
17742:
17690:
16963:{\displaystyle \eta _{\lambda }^{\pm }(x_{0}}
16393:time (on the right). Image: Daniel Blazevski.
10703:and the symmetric, positive definite tensors
1565:a consequence, LCSs are subject to the basic
1116:if all small enough initial perturbations to
19561:Theoretical and Computational Fluid Dynamics
19360:
18586:
18036:
17740:
17738:
17736:
17734:
17732:
17730:
17728:
17726:
17724:
17722:
16060:
15996:
11705:
11647:
11527:
11469:
7728:. At the same time, the image of the normal
3281:The growth of an infinitesimal perturbation
2814:
2806:
2770:
2764:
2749:
2743:
712:
597:
19060:
19002:
18629:
18564:
18173:
17321:{\displaystyle FTLE_{t_{0}}^{t_{1}}(x_{0})}
13292:{\displaystyle M_{t_{0}}^{t},N_{t_{0}}^{t}}
9819:) or in the material-line averaged strain (
7069:will generally not play the same role over
5108:{\displaystyle \nabla F_{t_{0}}^{t}(x_{0})}
1427:, the LCSs of the system over the interval
18697:
18377:
18339:
18296:
18208:
17655:
15735:
8494:
4692:, which is then precisely the finite-time
19617:
19345:
19237:
19192:
19097:
19027:
18969:
18905:
18849:
18770:
18434:
18427:2014 IEEE Pacific Visualization Symposium
18424:
18409:
18279:
18138:
18105:
18021:
17980:
17938:
17889:
17879:
17719:
14716:
14466:
14446:
11929:
11863:
11769:
11768:
11761:
11760:
11568:
11567:
11566:
11559:
11558:
9808:{\displaystyle {\mathcal {O}}(\epsilon )}
9775:{\displaystyle {\mathcal {O}}(\epsilon )}
9742:{\displaystyle {\mathcal {O}}(\epsilon )}
9705:{\displaystyle {\mathcal {O}}(\epsilon )}
9672:{\displaystyle {\mathcal {O}}(\epsilon )}
3554:
2813:
2809:
1640:
1567:objectivity (material frame-indifference)
1519:
635:
64:Learn how and when to remove this message
19410:Jimenez, Raymond; Vankerschaver, Joris.
17521:
16450:. Also shown is the perfectly coherent (
16401:
16387:
14863:
14804:
14298:{\displaystyle \psi _{t_{0}}^{t}(x_{0})}
13038:
13029:
12893:{\displaystyle \nabla F_{t_{0}}^{t_{1}}}
11191:
11183:
9187:
8012:
7127:and hence its evolving position at time
6841:
6750:
4851:
3084:
2830:
1454:
980:
124:
75:
18128:
17038:{\displaystyle \eta _{\lambda }^{\pm }}
14307:Lagrangian-averaged vorticity deviation
3144:normally hyperbolic invariant manifolds
339:{\displaystyle x_{0}\in {\mathcal {P}}}
19645:
19013:
18706:
18348:
18257:
18214:
18179:
17748:
17532:Software packages for LCS computations
14208:implies that the total angle swept by
8490:Frobenius-type integrability condition
3443:{\displaystyle \epsilon {\xi }(t_{0})}
2820:{\displaystyle \vert \,\cdot \,\vert }
1464:
1384:LCSs vs. classical invariant manifolds
1310:. For instance, if a material surface
772:, we refer to the evolving time slice
115:
17854:Olascoaga, M. J.; Haller, G. (2012).
16090:denote the unit normal of a 2D plane
15864:{\displaystyle {\mathcal {M}}(t_{0})}
15821:{\displaystyle {\mathcal {M}}(t_{0})}
15778:{\displaystyle {\mathcal {M}}(t_{0})}
8654:{\displaystyle {\mathcal {M}}(t_{0})}
8611:{\displaystyle {\mathcal {M}}(t_{0})}
8537:{\displaystyle {\mathcal {M}}(t_{0})}
8345:can be defined as a material surface
8102:, then the evolving material surface
7853:{\displaystyle {\mathcal {M}}(t_{1})}
7535:{\displaystyle {\mathcal {M}}(t_{0})}
5255:{\displaystyle x=(x^{1},x^{2},x^{3})}
3545:denoting an arbitrary unit vector in
3367:is governed by the flow map gradient
3271:{\displaystyle {\mathcal {M}}(t_{0})}
3231:{\displaystyle {\mathcal {M}}(t_{0})}
3191:{\displaystyle {\mathcal {M}}(t_{0})}
1653:{\displaystyle y\in \mathbb {R} ^{3}}
1189:{\displaystyle {\mathcal {M}}(t_{1})}
1149:{\displaystyle {\mathcal {M}}(t_{0})}
977:LCSs as exceptional material surfaces
922:{\displaystyle {\mathcal {M}}(t_{0})}
547:{\displaystyle {\mathcal {M}}(t_{0})}
19361:Lekien, Francois; Coulliette, Chad.
17067:infinitesimally uniformly stretching
7820:generally does not remain normal to
3402:{\displaystyle \nabla F_{t_{0}}^{t}}
2508:{\displaystyle \nabla F_{t_{0}}^{t}}
1239:, strict inequalities do not define
1215:defined over a finite time interval
120:
18:
19443:
19394:
19326:Journal of the Atmospheric Sciences
17771:10.1146/annurev-fluid-010313-141322
16970:coincides with the direction field
13192:where the proper orthogonal tensor
12789:{\displaystyle \theta _{t_{0}}^{t}}
10653:where the proper orthogonal tensor
10380:{\displaystyle \lambda _{1}(x_{0})}
10272:{\displaystyle \lambda _{2}(x_{0})}
9289:{\displaystyle \lambda _{2}(x_{0})}
9178:{\displaystyle \lambda _{1}(x_{0})}
9135:{\displaystyle \lambda _{2}(x_{0})}
3502:{\displaystyle 0<\epsilon \ll 1}
2893:-frame through a coordinate change
507:{\displaystyle t\in {\mathcal {I}}}
434:{\displaystyle t\in {\mathcal {I}}}
13:
19519:
19379:
18745:Farazmand, M.; Haller, G. (2012).
17135:-line is stretched by a factor of
17003:{\displaystyle \eta ^{\pm }(x_{0}}
16371:
16351:
16340:whose trajectories we refer to as
16322:
16280:
16169:
16144:
16122:
16097:
15999:
15939:
15840:
15797:
15754:
15035:
14985:
14945:
14565:
14562:
14559:
14556:
14462:
14459:
14456:
14341:
14216:
14177:
14132:
14087:
13999:
13831:
13806:
13762:
13740:
13497:
13340:
13058:
12858:
12851:is the closest rotation tensor to
12651:
12392:
12324:
12189:
11926:
11923:
11920:
11917:
11860:
11857:
11854:
11851:
11663:
11485:
10876:
10834:
10486:
10406:Kolmogorov–Arnold–Moser (KAM) tori
10344:starting from local minims of the
10300:
10236:starting from local maxima of the
10192:
10068:
10011:
10005:
9791:
9758:
9725:
9688:
9655:
9586:
9566:
9555:whose trajectories we refer to as
9535:
9493:
9380:
9355:
9333:
9308:
9253:starting from a global maximum of
9209:
9007:
8945:
8791:
8729:
8630:
8587:
8513:
8354:
8271:
8111:
7829:
7762:
7670:
7632:
7571:
7511:
7178:
7175:
7172:
7169:
6932:
6929:
6926:
6923:
5324:
5064:
5011:
5008:
5005:
5002:
4911:
4908:
4905:
4902:
4716:
4713:
4710:
4707:
4430:
4387:
4100:
4030:
3680:
3374:
3247:
3207:
3167:
3119:
3109:
3080:
3010:{\displaystyle x(t)=Q(t)y(t)+b(t)}
2480:
2405:
2395:is generally not frame-invariant.
2010:
1983:
1907:
1880:
1404:
1352:
1319:
1295:
1224:
1165:
1125:
1101:
1065:
1031:
998:
958:
948:
938:
898:
868:
825:
781:
753:
743:
691:
630:
620:
589:
563:
523:
499:
426:
396:
331:
169:
145:
14:
19684:
19474:. Mathematics and Visualization.
19428:
17382:{\displaystyle D_{t_{0}}^{t_{1}}}
17236:
17108:{\displaystyle F_{t_{0}}^{t_{1}}}
15002:{\displaystyle {\mathcal {M}}(t)}
14240:{\displaystyle \Phi _{t_{0}}^{t}}
14201:{\displaystyle \Phi _{t_{0}}^{t}}
12844:{\displaystyle R_{t_{0}}^{t_{1}}}
12078:{\displaystyle C_{t_{0}}^{t_{1}}}
11404:{\displaystyle C_{t_{0}}^{t_{1}}}
11308:{\displaystyle R_{t_{0}}^{t_{1}}}
11174:{\displaystyle R_{t_{0}}^{t_{1}}}
11128:{\displaystyle R_{t_{0}}^{t_{1}}}
11082:{\displaystyle C_{t_{0}}^{t_{1}}}
10692:{\displaystyle R_{t_{0}}^{t_{1}}}
10477:of the flow gradient in the form
9881:{\displaystyle D_{t_{0}}^{t_{1}}}
8371:{\displaystyle {\mathcal {M}}(t)}
8288:{\displaystyle {\mathcal {M}}(t)}
8128:{\displaystyle {\mathcal {M}}(t)}
1336:{\displaystyle {\mathcal {M}}(t)}
1082:{\displaystyle {\mathcal {M}}(t)}
1015:{\displaystyle {\mathcal {M}}(t)}
19526:
17751:Annual Review of Fluid Mechanics
17115:. Specifically, any subset of a
16263:satisfies the reduced shear ODE
12927:norm over a fixed time interval
12548:
10398:
5310:{\displaystyle x(t;t_{0},x_{0})}
5163:{\displaystyle x(t;t_{0},x_{0})}
4474:right Cauchy–Green strain tensor
3622:{\displaystyle x(t,t_{0},x_{0})}
3567:{\displaystyle \mathbb {R} ^{n}}
3360:{\displaystyle x(t,t_{0},x_{0})}
92:) are distinguished surfaces of
44:. Please discuss further on the
23:
19456:
19437:
19422:
19403:
19388:
19373:
19354:
18538:Journal of Mathematical Physics
18251:
16220:{\displaystyle n_{\pm }(x_{0})}
15914:{\displaystyle n_{\pm }(x_{0})}
12529:{\displaystyle \epsilon _{ijk}}
12476:
11726:
11548:
10395:in the shape of the oil spill.
10164:{\displaystyle \xi _{i}(x_{0})}
10067:
9834:Shearless LCSs are found to be
9431:{\displaystyle \xi _{3}(x_{0})}
8920:{\displaystyle \xi _{n}(x_{0})}
8704:{\displaystyle \xi _{1}(x_{0})}
7387:, even for straight FTLE ridges
2148:
1946:
1504:
209:{\displaystyle {\mathcal {I}}=}
19139:Physica D: Nonlinear Phenomena
18958:Physica D: Nonlinear Phenomena
18898:Physica D: Nonlinear Phenomena
18842:Physica D: Nonlinear Phenomena
18751:Physica D: Nonlinear Phenomena
18709:Physica D: Nonlinear Phenomena
18638:Physica D: Nonlinear Phenomena
18491:Physica D: Nonlinear Phenomena
18260:Physica D: Nonlinear Phenomena
18059:10.1016/j.atmosenv.2011.05.053
17786:Physica D: Nonlinear Phenomena
17684:
17658:Physica D: Nonlinear Phenomena
17452:
17439:
17423:
17410:
17315:
17302:
16987:
16947:
16881:
16868:
16851:
16838:
16822:
16809:
16794:
16781:
16748:
16735:
16718:
16705:
16689:
16676:
16648:
16635:
16615:
16602:
16539:
16498:
16311:
16298:
16250:
16244:
16214:
16201:
16057:
16044:
16028:
16015:
15970:
15957:
15908:
15895:
15858:
15845:
15815:
15802:
15772:
15759:
15715:
15702:
15683:
15670:
15650:
15637:
15620:
15607:
15587:
15574:
15555:
15542:
15522:
15509:
15492:
15479:
15459:
15446:
15413:
15400:
15383:
15370:
15354:
15341:
15326:
15313:
15287:
15274:
15257:
15244:
15228:
15215:
15194:
15181:
15161:
15148:
15115:
15102:
15053:
15040:
14996:
14990:
14963:
14950:
14910:
14884:
14848:
14822:
14789:
14777:
14754:
14748:
14708:
14702:
14696:
14684:
14675:
14656:
14650:
14607:
14594:
14534:
14508:
14501:the LAVD over a time interval
14482:
14479:
14473:
14467:
14443:
14431:
14423:
14417:
14400:
14394:
14388:
14362:
14350:
14335:
14323:
14292:
14279:
14114:
14049:
14043:
13951:
13928:
13909:
13856:
13850:
13611:
13592:
13522:
13516:
13432:
13413:
13365:
13359:
12960:
12934:
11782:
11770:
11757:
11745:
11739:
11727:
11256:
11243:
10867:
10831:
10457:
10431:
10408:that form elliptic regions in
10393:notable Tiger-Tail instability
10374:
10361:
10331:
10318:
10266:
10253:
10223:
10210:
10158:
10145:
10056:
10043:
10002:
9989:
9939:
9926:
9802:
9796:
9769:
9763:
9736:
9730:
9699:
9693:
9666:
9660:
9524:
9511:
9461:
9455:
9425:
9412:
9283:
9270:
9240:
9227:
9172:
9159:
9129:
9116:
9065:
9052:
9036:
9023:
8976:
8963:
8914:
8901:
8849:
8836:
8820:
8807:
8760:
8747:
8698:
8685:
8648:
8635:
8605:
8592:
8531:
8518:
8440:
8414:
8365:
8359:
8332:
8306:
8282:
8276:
8243:
8217:
8168:
8142:
8122:
8116:
8083:
8057:
7997:
7971:
7922:
7896:
7847:
7834:
7807:
7794:
7715:
7702:
7650:
7637:
7589:
7576:
7529:
7516:
7435:
7409:
7343:
7305:
7274:
7236:
7114:
7076:
7056:
7030:
6986:
6973:
6901:
6863:
6699:
6654:
6638:
6593:
6549:
6504:
6488:
6443:
6399:
6354:
6338:
6293:
6247:
6202:
6186:
6141:
6097:
6052:
6036:
5991:
5947:
5902:
5886:
5841:
5795:
5750:
5734:
5689:
5645:
5600:
5584:
5539:
5495:
5450:
5434:
5389:
5362:
5349:
5304:
5272:
5249:
5210:
5157:
5125:
5102:
5089:
4953:
4940:
4834:
4821:
4799:
4773:
4758:
4745:
4679:
4653:
4645:
4605:
4583:
4570:
4552:
4539:
4316:
4303:
4297:
4284:
4249:
4236:
4210:
4197:
4164:
4151:
4145:
4132:
4094:
4081:
4075:
4062:
4007:
3994:
3963:
3937:
3906:
3893:
3862:
3844:
3831:
3749:
3736:
3725:
3712:
3674:
3648:
3616:
3584:
3532:
3519:
3437:
3424:
3354:
3322:
3299:
3293:
3265:
3252:
3225:
3212:
3185:
3172:
3004:
2998:
2989:
2983:
2977:
2971:
2962:
2956:
2933:
2927:
2915:
2909:
2851:material particle trajectories
2780:
2738:
2589:
2577:
2537:
2525:
2460:
2448:
2423:
2411:
2382:
2370:
2347:
2335:
2312:
2300:
2268:
2262:
2241:
2234:
2225:
2219:
2213:
2201:
2189:
2182:
2173:
2161:
2155:
2142:
2136:
2130:
2118:
2106:
2099:
2090:
2078:
2072:
2032:
2028:
2016:
2007:
2001:
1989:
1962:
1950:
1929:
1925:
1913:
1904:
1898:
1886:
1859:
1847:
1824:
1812:
1789:
1777:
1731:
1725:
1676:
1670:
1609:
1603:
1591:
1585:
1498:
1486:
1412:{\displaystyle {\mathcal {P}}}
1360:{\displaystyle {\mathcal {I}}}
1330:
1324:
1303:{\displaystyle {\mathcal {I}}}
1232:{\displaystyle {\mathcal {I}}}
1183:
1170:
1143:
1130:
1109:{\displaystyle {\mathcal {I}}}
1076:
1070:
1039:{\displaystyle {\mathcal {I}}}
1009:
1003:
916:
903:
876:{\displaystyle {\mathcal {M}}}
846:
843:
830:
820:
792:
786:
709:
696:
683:
677:
665:
639:
612:
600:
571:{\displaystyle {\mathcal {P}}}
541:
528:
388:
356:
296:
264:
258:
203:
177:
153:{\displaystyle {\mathcal {P}}}
86:Lagrangian coherent structures
1:
19544:Lagrangian coherent structure
18325:10.1103/PhysRevLett.98.144502
18290:10.1016/S0167-2789(00)00199-8
17678:10.1016/S0167-2789(00)00142-1
17627:
17538:Finite-Time Lyapunov Exponent
16571:{\displaystyle \lambda >0}
14810:(Image: Alireza Hadjighasem)
13698:{\displaystyle O_{t_{0}}^{t}}
13235:and the non-singular tensors
13224:{\displaystyle O_{t_{0}}^{t}}
11200:. (Image: Mohammad Farazmand)
10279:eigenvalue field. Similarly,
9639:{\displaystyle F_{t_{0}}^{t}}
9296:. (Image: Mohammad Farazmand)
5053:The classic way of computing
3629:into the perturbation vector
3134:(see. Fig. 4) . Similarly, a
2836:(Image: Francisco Beron-Vera)
2429:{\displaystyle \nabla v(x,t)}
1618:{\displaystyle x=Q(t)y+b(t),}
1279:{\displaystyle F_{t_{0}}^{t}}
929:yields an invariant manifold
768:. Borrowing terminology from
473:{\displaystyle F_{t_{0}}^{t}}
309:, mapping initial conditions
19484:10.1007/978-3-319-04099-8_13
18681:10.1007/978-3-642-23175-9_15
18485:Shadden, S. C.; Lekien, F.;
18002:Geophysical Research Letters
17961:Geophysical Research Letters
17919:Geophysical Research Letters
17622:Coherent turbulent structure
13666:The dynamic rotation tensor
13305:right dynamic stretch tensor
5262:for the evolving trajectory
2939:{\displaystyle x=Q(t)y+b(t)}
2844:for particle motion and the
7:
19159:10.1016/j.physd.2012.06.012
18988:10.1016/j.physd.2015.09.007
18924:10.1016/j.physd.2014.03.008
18868:10.1016/j.physd.2014.01.007
18772:10.1016/j.physd.2011.09.013
18729:10.1016/j.physd.2010.11.010
18658:10.1016/j.physd.2012.05.006
18511:10.1016/j.physd.2005.10.007
17841:10.1016/j.cnsns.2014.07.011
17806:10.1016/j.physd.2013.05.003
17617:Eulerian coherent structure
17590:
14169:The dynamic consistency of
13301:left dynamic stretch tensor
7663:by the linearized flow map
6779:{\displaystyle \delta _{i}}
3538:{\displaystyle \xi (t_{0})}
10:
19689:
19598:Journal of Fluid Mechanics
19226:Journal of Fluid Mechanics
19086:Journal of Fluid Mechanics
19046:10.1016/j.jmps.2015.10.002
18445:10.1109/PacificVis.2014.27
18217:Journal of Fluid Mechanics
16918:{\displaystyle \lambda =1}
16469:{\displaystyle \lambda =1}
11206:polar rotation angle (PRA)
8297:repelling (attracting) LCS
1392:are invariant sets in the
1053:. For instance, we call a
514:, then for any smooth set
19628:10.1017/S0022112006003648
19581:10.1007/s00162-006-0031-0
18237:10.1017/S0022112004002526
15875:
15830:
15787:
15744:
15741:
14547:therefore takes the form
8881:
8665:
8620:
8577:
8503:
8500:
6832:{\displaystyle 2\times 2}
3305:{\displaystyle {\xi }(t)}
1708:{\displaystyle 3\times 3}
554:of initial conditions in
160:and over a time interval
18149:10.1109/CVPR.2007.382977
17607:Dynamical systems theory
17222:{\displaystyle \lambda }
17148:{\displaystyle \lambda }
17128:{\displaystyle \lambda }
17058:{\displaystyle \lambda }
16443:{\displaystyle \lambda }
16419:{\displaystyle \lambda }
16256:{\displaystyle x_{0}(s)}
16177:{\displaystyle n_{\Pi }}
16130:{\displaystyle n_{\Pi }}
15128:is maximal (cf. Fig 7).
14249:intrinsic rotation angle
9782:material strips show no
9467:{\displaystyle x_{0}(s)}
9388:{\displaystyle n_{\Pi }}
9341:{\displaystyle n_{\Pi }}
7160:will not be a ridge for
2466:{\displaystyle {W}(y,t)}
18305:Physical Review Letters
18039:Atmospheric Environment
17881:10.1073/pnas.1118574109
17536:Particle advection and
16184:and to the unit normal
15831:Frobenius-type PDE for
15745:Normal vector field of
13233:dynamic rotation tensor
9714:geodesic theory of LCSs
9395:and to the unit normal
8621:Frobenius-type PDE for
8504:Normal vector field of
7153:{\displaystyle t_{0}+T}
2846:Navier–Stokes equations
2713:Navier–Stokes equations
19347:10.1175/JAS-D-11-084.1
18574:Shadden, S.C. (2005).
18396:(9): 091108–091108–1.
17528:
17513:
17486:
17459:
17383:
17322:
17223:
17203:
17176:
17149:
17129:
17109:
17059:
17039:
17004:
16964:
16925:, the direction field
16919:
16891:
16572:
16546:
16477:
16470:
16444:
16420:
16394:
16378:
16358:
16334:
16257:
16221:
16178:
16151:
16131:
16104:
16073:
15977:
15915:
15865:
15822:
15779:
15725:
15423:
15122:
15060:
15003:
14970:
14917:
14869:
14855:
14811:
14796:
14795:{\displaystyle v(x,t)}
14761:
14730:
14541:
14495:
14369:
14299:
14241:
14202:
14163:
14056:
13983:
13863:
13790:
13699:
13657:
13529:
13456:
13372:
13293:
13225:
13184:
13045:
13036:
13021:
12994:
12967:
12921:
12894:
12845:
12790:
12751:
12721:
12577:
12530:
12497:
12168:
12079:
12031:
11796:
11405:
11359:
11336:
11309:
11263:
11201:
11189:
11175:
11129:
11083:
11037:
10775:
10693:
10647:
10464:
10381:
10338:
10273:
10230:
10165:
10120:
9882:
9809:
9776:
9743:
9706:
9673:
9640:
9593:
9573:
9547:
9468:
9432:
9389:
9362:
9342:
9315:
9297:
9290:
9247:
9179:
9136:
9083:
8983:
8921:
8867:
8767:
8705:
8655:
8612:
8570:
8538:
8474:
8447:
8372:
8339:
8289:
8256:
8175:
8129:
8096:
8018:
8004:
7929:
7854:
7814:
7749:
7722:
7657:
7596:
7536:
7496:
7469:
7448:. At an initial point
7442:
7370:
7350:
7281:
7223:
7154:
7121:
7063:
7013:
6993:
6908:
6847:
6833:
6807:
6780:
6756:
6743:
5311:
5256:
5191:
5164:
5109:
5044:
4987:
4960:
4887:
4857:
4844:
4686:
4592:
4497:
4466:
4334:
3783:
3756:
3623:
3568:
3539:
3503:
3471:
3444:
3403:
3361:
3306:
3272:
3232:
3192:
3128:
3090:
3071:
3051:
3031:
3011:
2940:
2887:
2867:
2837:
2821:
2793:
2703:
2544:
2543:{\displaystyle v(x,t)}
2509:
2467:
2430:
2389:
2388:{\displaystyle W(x,t)}
2354:
2353:{\displaystyle S(x,t)}
2319:
2318:{\displaystyle S(x,t)}
2278:
2053:
1831:
1830:{\displaystyle W(x,t)}
1796:
1795:{\displaystyle S(x,t)}
1758:
1738:
1709:
1683:
1654:
1619:
1558:
1536:
1461:
1441:
1413:
1361:
1337:
1304:
1280:
1233:
1190:
1150:
1110:
1083:
1040:
1016:
986:
967:
923:
877:
853:
762:
719:
572:
548:
508:
474:
435:
405:
340:
303:
210:
154:
130:
82:
17525:
17514:
17512:{\displaystyle t_{1}}
17487:
17485:{\displaystyle t_{0}}
17460:
17384:
17323:
17224:
17204:
17202:{\displaystyle t_{1}}
17177:
17175:{\displaystyle t_{0}}
17150:
17130:
17110:
17060:
17040:
17005:
16965:
16920:
16892:
16573:
16547:
16481:strain tensor family
16471:
16445:
16421:
16405:
16391:
16379:
16359:
16335:
16258:
16222:
16179:
16152:
16132:
16105:
16074:
15978:
15916:
15866:
15823:
15780:
15726:
15424:
15123:
15061:
15004:
14971:
14918:
14867:
14856:
14808:
14797:
14762:
14731:
14542:
14496:
14375:and its spatial mean
14370:
14300:
14242:
14203:
14164:
14057:
13984:
13864:
13791:
13700:
13658:
13530:
13457:
13373:
13294:
13226:
13185:
13042:
13033:
13022:
13020:{\displaystyle t_{1}}
12995:
12993:{\displaystyle t_{0}}
12968:
12922:
12920:{\displaystyle L^{2}}
12895:
12846:
12791:
12752:
12750:{\displaystyle t_{0}}
12722:
12578:
12531:
12498:
12148:
12080:
12032:
11797:
11406:
11360:
11358:{\displaystyle 2\pi }
11337:
11335:{\displaystyle x_{0}}
11310:
11264:
11195:
11187:
11176:
11130:
11084:
11038:
10776:
10694:
10648:
10465:
10382:
10339:
10274:
10231:
10166:
10121:
9883:
9810:
9777:
9744:
9707:
9674:
9641:
9594:
9574:
9548:
9469:
9433:
9390:
9363:
9343:
9316:
9291:
9248:
9191:
9180:
9137:
9084:
8984:
8922:
8868:
8768:
8706:
8656:
8613:
8571:
8569:{\displaystyle n=2,3}
8539:
8475:
8473:{\displaystyle n_{0}}
8448:
8373:
8340:
8290:
8257:
8176:
8130:
8097:
8016:
8005:
7930:
7855:
7815:
7750:
7748:{\displaystyle n_{0}}
7723:
7658:
7597:
7537:
7497:
7495:{\displaystyle n_{0}}
7470:
7468:{\displaystyle x_{0}}
7443:
7371:
7351:
7282:
7224:
7155:
7122:
7064:
7014:
6994:
6909:
6845:
6834:
6808:
6806:{\displaystyle x^{i}}
6781:
6754:
6744:
5312:
5257:
5192:
5190:{\displaystyle x_{0}}
5165:
5110:
5045:
4988:
4986:{\displaystyle t_{1}}
4961:
4888:
4886:{\displaystyle t_{0}}
4855:
4845:
4687:
4593:
4498:
4496:{\displaystyle x_{0}}
4467:
4335:
3784:
3782:{\displaystyle x_{0}}
3757:
3624:
3569:
3540:
3504:
3472:
3470:{\displaystyle x_{0}}
3445:
3404:
3362:
3307:
3273:
3233:
3193:
3129:
3088:
3072:
3052:
3032:
3012:
2941:
2888:
2868:
2834:
2822:
2794:
2704:
2545:
2510:
2468:
2431:
2390:
2355:
2320:
2279:
2054:
1832:
1797:
1759:
1739:
1710:
1684:
1655:
1620:
1559:
1537:
1458:
1442:
1414:
1362:
1338:
1305:
1281:
1234:
1191:
1151:
1111:
1084:
1041:
1017:
984:
968:
924:
878:
854:
763:
720:
573:
549:
509:
475:
436:
406:
341:
304:
211:
155:
128:
79:
42:neutral point of view
19478:. pp. 201–215.
19256:10.1017/jfm.2013.391
19116:10.1017/jfm.2016.151
18429:. pp. 277–280.
18023:10.1029/2012GL051246
17982:10.1002/2013GL058624
17940:10.1029/2011GL048815
17612:Spectral submanifold
17496:
17469:
17397:
17347:
17261:
17213:
17186:
17159:
17139:
17119:
17073:
17049:
17017:
16974:
16929:
16903:
16584:
16556:
16485:
16454:
16434:
16410:
16377:{\displaystyle \Pi }
16368:
16357:{\displaystyle \Pi }
16348:
16267:
16231:
16188:
16161:
16150:{\displaystyle \Pi }
16141:
16114:
16103:{\displaystyle \Pi }
16094:
15993:
15926:
15882:
15835:
15792:
15749:
15433:
15135:
15070:
15013:
15009:, the tangent space
14980:
14927:
14881:
14819:
14771:
14760:{\displaystyle U(t)}
14742:
14551:
14505:
14379:
14317:
14254:
14212:
14173:
14068:
13995:
13875:
13802:
13711:
13670:
13541:
13468:
13384:
13311:
13239:
13196:
13055:
13004:
12977:
12931:
12904:
12855:
12809:
12761:
12734:
12587:
12544:
12507:
12091:
12043:
11810:
11417:
11369:
11346:
11319:
11273:
11211:
11139:
11093:
11047:
10796:
10787:right stretch tensor
10707:
10657:
10483:
10475:polar decompositions
10428:
10348:
10287:
10283:are trajectories of
10240:
10179:
10175:are trajectories of
10132:
9894:
9846:
9786:
9753:
9720:
9683:
9650:
9611:
9592:{\displaystyle \Pi }
9583:
9572:{\displaystyle \Pi }
9563:
9557:reduced shrink lines
9480:
9442:
9399:
9372:
9361:{\displaystyle \Pi }
9352:
9325:
9314:{\displaystyle \Pi }
9305:
9257:
9196:
9146:
9103:
8999:
8932:
8888:
8783:
8716:
8672:
8625:
8582:
8548:
8508:
8457:
8382:
8378:whose net repulsion
8349:
8303:
8266:
8185:
8139:
8106:
8025:
7939:
7864:
7824:
7759:
7732:
7667:
7610:
7549:
7506:
7479:
7452:
7406:
7360:
7302:
7233:
7164:
7131:
7073:
7027:
7003:
6918:
6860:
6817:
6790:
6763:
6759:with a small vector
5321:
5266:
5201:
5174:
5119:
5061:
4997:
4970:
4897:
4870:
4702:
4602:
4507:
4480:
4346:
3795:
3766:
3633:
3578:
3549:
3513:
3481:
3454:
3413:
3371:
3316:
3285:
3242:
3202:
3162:
3104:
3061:
3041:
3021:
2950:
2897:
2877:
2857:
2803:
2719:
2556:
2519:
2477:
2440:
2402:
2364:
2329:
2294:
2288:similarity transform
2063:
1841:
1806:
1802:and the spin tensor
1771:
1748:
1737:{\displaystyle b(t)}
1719:
1693:
1682:{\displaystyle Q(t)}
1664:
1629:
1573:
1548:
1474:
1431:
1399:
1347:
1314:
1290:
1251:
1219:
1160:
1120:
1096:
1060:
1026:
993:
933:
893:
863:
776:
738:
584:
558:
518:
488:
445:
415:
350:
346:into their position
313:
220:
164:
140:
19610:2007JFM...572..111G
19573:2007ThCFD..21...39S
19444:Du Toit, Philip C.
19338:2012JAtS...69..753B
19291:2010Chaos..20a7514B
19248:2013JFM...731R...4H
19151:2012PhyD..241.1680H
19108:2016JFM...795..136H
19038:2016JMPSo..86...70H
18980:2016PhyD..315....1F
18916:2014PhyD..278...44F
18860:2014PhyD..273...46B
18800:2012Chaos..22a3128F
18763:2012PhyD..241..439F
18721:2011PhyD..240..574H
18650:2012PhyD..241.1475N
18607:2010Chaos..20a7504L
18550:2007JMP....48f5404L
18503:2005PhyD..212..271S
18402:2010PhFl...22i1108K
18363:2002PhFl...14.1851H
18317:2007PhRvL..98n4502M
18272:2001PhyD..149..248H
18229:2005JFM...525....1H
18194:2001PhFl...13.3365H
18090:2011Chaos..21c3122T
18051:2012AtmEn..48..230P
18014:2012GeoRL..39.6602H
17973:2013GeoRL..40.6171O
17931:2011GeoRL..3817604N
17872:2012PNAS..109.4738O
17833:2015CNSNS..22..964B
17798:2013PhyD..258...47B
17763:2015AnRFM..47..137H
17705:2013PhT....66b..41P
17670:2000PhyD..147..352H
17378:
17301:
17104:
17069:under the flow map
17045:are referred to as
17034:
16946:
16601:
16529:
16342:reduced shear lines
16284:
16157:are normal to both
15943:
15738:
15101:
14976:of an elliptic LCS
14641:
14593:
14278:
14236:
14197:
14152:
14107:
14019:
13826:
13782:
13760:
13735:
13694:
13646:
13580:
13492:
13335:
13288:
13263:
13220:
13176:
13154:
13129:
13107:
13082:
12889:
12840:
12785:
12682:
12616:
12423:
12355:
12295:
12220:
12125:
12074:
12018:
11964:
11898:
11834:
11694:
11613:
11516:
11458:
11411:using the formulas
11400:
11304:
11242:
11170:
11124:
11078:
11029:
11000:
10968:
10939:
10907:
10865:
10827:
10783:left stretch tensor
10770:
10738:
10688:
10639:
10610:
10578:
10549:
10517:
10410:Hamiltonian systems
10304:
10196:
10042:
9988:
9925:
9877:
9635:
9497:
9213:
8949:
8733:
8497:
8413:
8216:
8056:
7970:
7895:
7793:
7701:
7602:is mapped into the
7218:
6972:
5348:
5088:
5039:
4939:
4744:
4643:
4538:
4461:
4418:
4377:
4283:
4131:
4061:
3830:
3789:can be computed as
3711:
3398:
3312:along a trajectory
2504:
1465:Objectivity of LCSs
1390:invariant manifolds
1275:
1202:invariant manifolds
819:
663:
469:
244:
116:General definitions
19673:Flow visualization
19395:Shadden, Shawn C.
18900:. 278–279: 44–57.
18844:. 273–274: 46–62.
17529:
17509:
17482:
17455:
17379:
17350:
17318:
17273:
17257:of the FTLE field
17229:-lines within the
17219:
17199:
17172:
17155:between the times
17145:
17125:
17105:
17076:
17055:
17035:
17020:
17000:
16960:
16932:
16915:
16887:
16587:
16568:
16542:
16501:
16478:
16466:
16440:
16416:
16395:
16374:
16354:
16330:
16270:
16253:
16217:
16174:
16147:
16127:
16100:
16069:
15973:
15929:
15911:
15861:
15818:
15775:
15736:
15721:
15419:
15118:
15073:
15056:
14999:
14966:
14913:
14870:
14851:
14812:
14792:
14757:
14726:
14613:
14554:
14537:
14491:
14365:
14295:
14257:
14237:
14215:
14198:
14176:
14159:
14131:
14086:
14052:
13998:
13979:
13859:
13805:
13786:
13761:
13739:
13714:
13695:
13673:
13653:
13625:
13559:
13525:
13471:
13452:
13368:
13314:
13289:
13267:
13242:
13221:
13199:
13180:
13155:
13133:
13108:
13086:
13061:
13046:
13037:
13017:
12990:
12963:
12917:
12890:
12861:
12841:
12812:
12786:
12764:
12747:
12717:
12654:
12595:
12573:
12538:Levi-Civita symbol
12526:
12493:
12491:
12395:
12327:
12274:
12192:
12104:
12085:from the formulas
12075:
12046:
12027:
11997:
11943:
11877:
11813:
11792:
11790:
11666:
11585:
11488:
11430:
11401:
11372:
11355:
11332:
11305:
11276:
11259:
11214:
11202:
11190:
11171:
11142:
11125:
11096:
11079:
11050:
11033:
11001:
10972:
10940:
10911:
10879:
10837:
10799:
10771:
10742:
10710:
10689:
10660:
10643:
10611:
10582:
10550:
10521:
10489:
10460:
10377:
10334:
10290:
10269:
10226:
10182:
10161:
10116:
10107:
10014:
9960:
9897:
9878:
9849:
9805:
9772:
9739:
9702:
9669:
9636:
9614:
9589:
9569:
9543:
9483:
9474:satisfies the ODE
9464:
9428:
9385:
9368:is normal to both
9358:
9338:
9311:
9298:
9286:
9243:
9199:
9175:
9132:
9079:
8979:
8935:
8917:
8863:
8763:
8719:
8701:
8651:
8608:
8566:
8534:
8495:
8470:
8443:
8385:
8368:
8335:
8299:over the interval
8285:
8252:
8188:
8171:
8125:
8092:
8028:
8019:
8000:
7942:
7925:
7867:
7850:
7810:
7765:
7745:
7718:
7673:
7653:
7592:
7532:
7492:
7465:
7438:
7366:
7346:
7277:
7219:
7167:
7150:
7117:
7059:
7019:cannot be used to
7009:
6989:
6921:
6904:
6848:
6829:
6803:
6776:
6757:
6739:
6730:
5327:
5307:
5252:
5187:
5160:
5105:
5067:
5055:Lyapunov exponents
5040:
5000:
4983:
4956:
4900:
4883:
4858:
4840:
4705:
4682:
4615:
4588:
4510:
4493:
4462:
4433:
4390:
4349:
4330:
4328:
4255:
4225:
4103:
4033:
4022:
3921:
3869:
3802:
3779:
3752:
3683:
3619:
3564:
3535:
3499:
3467:
3440:
3399:
3377:
3357:
3302:
3268:
3228:
3188:
3124:
3091:
3067:
3047:
3027:
3007:
2936:
2883:
2863:
2838:
2817:
2789:
2699:
2687:
2540:
2505:
2483:
2463:
2426:
2385:
2350:
2315:
2274:
2049:
1827:
1792:
1754:
1734:
1705:
1679:
1650:
1615:
1554:
1532:
1462:
1452:dynamical system.
1437:
1409:
1357:
1333:
1300:
1276:
1254:
1229:
1186:
1146:
1106:
1092:over the interval
1079:
1036:
1012:
987:
963:
919:
873:
849:
798:
758:
729:invariant manifold
715:
642:
568:
544:
504:
484:for any choice of
470:
448:
441:. If the flow map
431:
401:
336:
299:
223:
206:
150:
131:
83:
19653:Dynamical systems
19493:978-3-319-04099-8
19299:10.1063/1.3271342
19203:10.1137/140983665
18808:10.1063/1.3690153
18690:978-3-642-23174-2
18615:10.1063/1.3270049
18558:10.1063/1.2740025
18454:978-1-4799-2873-6
18411:10.1063/1.3483220
18390:Physics of Fluids
18371:10.1063/1.1477449
18351:Physics of Fluids
18202:10.1063/1.1403336
18188:(11): 3365–3385.
18182:Physics of Fluids
18158:978-1-4244-1179-5
18098:10.1063/1.3624930
17866:(13): 4738–4743.
17713:10.1063/PT.3.1886
16856:
16855:
16723:
16722:
16496:
16087:
16086:
15690:
15689:
15686:
15653:
15623:
15562:
15561:
15558:
15525:
15495:
15388:
15387:
15262:
15261:
14699:
14486:
14391:
14117:
14080:
13954:
13887:
13553:
13396:
12715:
12471:
12248:
12247:
12141:
11721:
11720:
11543:
11542:
9953:
9840:Lorentzian metric
9097:
9096:
7369:{\displaystyle T}
7012:{\displaystyle T}
6726:
6576:
6426:
6274:
6124:
5974:
5822:
5672:
5522:
5170:from any element
4803:
4694:Lyapunov exponent
4586:
4324:
4184:
4172:
3981:
3880:
3878:
3854:
3148:dynamical systems
3070:{\displaystyle y}
3050:{\displaystyle y}
3030:{\displaystyle x}
2886:{\displaystyle y}
2866:{\displaystyle x}
2842:Newton’s equation
2736:
2568:
2259:
2158:
2075:
1976:
1873:
1757:{\displaystyle 3}
1557:{\displaystyle U}
1440:{\displaystyle I}
1213:dynamical systems
1198:dynamical systems
121:Material surfaces
74:
73:
66:
37:with its subject.
19680:
19639:
19621:
19592:
19530:
19529:
19513:
19512:
19510:
19504:. Archived from
19469:
19460:
19454:
19453:
19448:. Archived from
19441:
19435:
19434:
19426:
19420:
19419:
19414:. Archived from
19407:
19401:
19400:
19392:
19386:
19385:
19382:"LCS MATLAB Kit"
19380:Dabiri, John O.
19377:
19371:
19370:
19365:. Archived from
19358:
19352:
19351:
19349:
19317:
19311:
19310:
19274:
19268:
19267:
19241:
19221:
19215:
19214:
19196:
19176:
19163:
19162:
19134:
19128:
19127:
19101:
19081:
19058:
19057:
19031:
19011:
19000:
18999:
18973:
18953:
18936:
18935:
18909:
18893:
18880:
18879:
18853:
18837:
18820:
18819:
18783:
18777:
18776:
18774:
18742:
18733:
18732:
18704:
18695:
18694:
18668:
18662:
18661:
18633:
18627:
18626:
18590:
18584:
18583:
18578:. Archived from
18571:
18562:
18561:
18535:
18526:
18515:
18514:
18497:(3–4): 271–304.
18482:
18467:
18466:
18438:
18422:
18416:
18415:
18413:
18381:
18375:
18374:
18357:(6): 1851–1861.
18346:
18337:
18336:
18300:
18294:
18293:
18283:
18255:
18249:
18248:
18212:
18206:
18205:
18177:
18171:
18170:
18142:
18126:
18120:
18119:
18109:
18069:
18063:
18062:
18034:
18028:
18027:
18025:
17993:
17987:
17986:
17984:
17951:
17945:
17944:
17942:
17910:
17904:
17903:
17893:
17883:
17851:
17845:
17844:
17827:(1–3): 964–979.
17816:
17810:
17809:
17781:
17775:
17774:
17746:
17717:
17716:
17688:
17682:
17681:
17653:
17551:LCS MATLAB Kit (
17518:
17516:
17515:
17510:
17508:
17507:
17491:
17489:
17488:
17483:
17481:
17480:
17464:
17462:
17461:
17456:
17451:
17450:
17438:
17437:
17422:
17421:
17409:
17408:
17388:
17386:
17385:
17380:
17377:
17376:
17375:
17365:
17364:
17363:
17327:
17325:
17324:
17319:
17314:
17313:
17300:
17299:
17298:
17288:
17287:
17286:
17228:
17226:
17225:
17220:
17208:
17206:
17205:
17200:
17198:
17197:
17181:
17179:
17178:
17173:
17171:
17170:
17154:
17152:
17151:
17146:
17134:
17132:
17131:
17126:
17114:
17112:
17111:
17106:
17103:
17102:
17101:
17091:
17090:
17089:
17064:
17062:
17061:
17056:
17044:
17042:
17041:
17036:
17033:
17028:
17013:Trajectories of
17009:
17007:
17006:
17001:
16999:
16998:
16986:
16985:
16969:
16967:
16966:
16961:
16959:
16958:
16945:
16940:
16924:
16922:
16921:
16916:
16896:
16894:
16893:
16888:
16880:
16879:
16867:
16866:
16857:
16854:
16850:
16849:
16837:
16836:
16821:
16820:
16808:
16807:
16797:
16793:
16792:
16780:
16779:
16767:
16766:
16756:
16755:
16747:
16746:
16734:
16733:
16724:
16721:
16717:
16716:
16704:
16703:
16688:
16687:
16675:
16674:
16664:
16663:
16662:
16647:
16646:
16634:
16633:
16623:
16622:
16614:
16613:
16600:
16595:
16577:
16575:
16574:
16569:
16551:
16549:
16548:
16543:
16528:
16527:
16526:
16516:
16515:
16514:
16497:
16489:
16475:
16473:
16472:
16467:
16449:
16447:
16446:
16441:
16425:
16423:
16422:
16417:
16383:
16381:
16380:
16375:
16363:
16361:
16360:
16355:
16339:
16337:
16336:
16331:
16326:
16325:
16310:
16309:
16297:
16296:
16283:
16278:
16262:
16260:
16259:
16254:
16243:
16242:
16226:
16224:
16223:
16218:
16213:
16212:
16200:
16199:
16183:
16181:
16180:
16175:
16173:
16172:
16156:
16154:
16153:
16148:
16136:
16134:
16133:
16128:
16126:
16125:
16109:
16107:
16106:
16101:
16078:
16076:
16075:
16070:
16056:
16055:
16043:
16042:
16027:
16026:
16014:
16013:
15982:
15980:
15979:
15974:
15969:
15968:
15956:
15955:
15942:
15937:
15920:
15918:
15917:
15912:
15907:
15906:
15894:
15893:
15870:
15868:
15867:
15862:
15857:
15856:
15844:
15843:
15827:
15825:
15824:
15819:
15814:
15813:
15801:
15800:
15784:
15782:
15781:
15776:
15771:
15770:
15758:
15757:
15739:
15730:
15728:
15727:
15722:
15714:
15713:
15701:
15700:
15691:
15688:
15687:
15682:
15681:
15669:
15668:
15659:
15654:
15649:
15648:
15636:
15635:
15626:
15619:
15618:
15606:
15605:
15596:
15595:
15594:
15586:
15585:
15573:
15572:
15563:
15560:
15559:
15554:
15553:
15541:
15540:
15531:
15526:
15521:
15520:
15508:
15507:
15498:
15491:
15490:
15478:
15477:
15468:
15467:
15466:
15458:
15457:
15445:
15444:
15428:
15426:
15425:
15420:
15412:
15411:
15399:
15398:
15389:
15386:
15382:
15381:
15369:
15368:
15353:
15352:
15340:
15339:
15329:
15325:
15324:
15312:
15311:
15295:
15294:
15286:
15285:
15273:
15272:
15263:
15260:
15256:
15255:
15243:
15242:
15227:
15226:
15214:
15213:
15203:
15193:
15192:
15180:
15179:
15169:
15168:
15160:
15159:
15147:
15146:
15127:
15125:
15124:
15119:
15114:
15113:
15100:
15099:
15098:
15088:
15087:
15086:
15065:
15063:
15062:
15057:
15052:
15051:
15039:
15038:
15032:
15031:
15030:
15029:
15008:
15006:
15005:
15000:
14989:
14988:
14975:
14973:
14972:
14967:
14962:
14961:
14949:
14948:
14939:
14938:
14922:
14920:
14919:
14916:{\displaystyle }
14914:
14909:
14908:
14896:
14895:
14861:(see Fig. 11d).
14860:
14858:
14857:
14854:{\displaystyle }
14852:
14847:
14846:
14834:
14833:
14801:
14799:
14798:
14793:
14766:
14764:
14763:
14758:
14735:
14733:
14732:
14727:
14715:
14711:
14701:
14700:
14692:
14674:
14673:
14640:
14639:
14638:
14628:
14627:
14626:
14606:
14605:
14592:
14591:
14590:
14580:
14579:
14578:
14568:
14546:
14544:
14543:
14540:{\displaystyle }
14538:
14533:
14532:
14520:
14519:
14500:
14498:
14497:
14492:
14487:
14485:
14465:
14453:
14427:
14426:
14407:
14393:
14392:
14384:
14374:
14372:
14371:
14366:
14304:
14302:
14301:
14296:
14291:
14290:
14277:
14272:
14271:
14270:
14246:
14244:
14243:
14238:
14235:
14230:
14229:
14228:
14207:
14205:
14204:
14199:
14196:
14191:
14190:
14189:
14168:
14166:
14165:
14160:
14151:
14146:
14145:
14144:
14130:
14119:
14118:
14110:
14106:
14105:
14104:
14094:
14082:
14081:
14073:
14061:
14059:
14058:
14053:
14039:
14038:
14037:
14036:
14018:
14013:
14012:
14011:
13988:
13986:
13985:
13980:
13972:
13968:
13967:
13956:
13955:
13947:
13941:
13937:
13927:
13926:
13889:
13888:
13880:
13868:
13866:
13865:
13860:
13846:
13845:
13844:
13843:
13825:
13820:
13819:
13818:
13795:
13793:
13792:
13787:
13781:
13776:
13775:
13774:
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13752:
13734:
13729:
13728:
13727:
13704:
13702:
13701:
13696:
13693:
13688:
13687:
13686:
13662:
13660:
13659:
13654:
13645:
13640:
13639:
13638:
13624:
13620:
13610:
13609:
13579:
13578:
13577:
13567:
13555:
13554:
13546:
13534:
13532:
13531:
13526:
13512:
13511:
13510:
13509:
13491:
13486:
13485:
13484:
13461:
13459:
13458:
13453:
13445:
13441:
13431:
13430:
13398:
13397:
13389:
13377:
13375:
13374:
13369:
13355:
13354:
13353:
13352:
13334:
13329:
13328:
13327:
13298:
13296:
13295:
13290:
13287:
13282:
13281:
13280:
13262:
13257:
13256:
13255:
13230:
13228:
13227:
13222:
13219:
13214:
13213:
13212:
13189:
13187:
13186:
13181:
13175:
13170:
13169:
13168:
13153:
13148:
13147:
13146:
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13123:
13122:
13121:
13106:
13101:
13100:
13099:
13081:
13076:
13075:
13074:
13026:
13024:
13023:
13018:
13016:
13015:
12999:
12997:
12996:
12991:
12989:
12988:
12972:
12970:
12969:
12966:{\displaystyle }
12964:
12959:
12958:
12946:
12945:
12926:
12924:
12923:
12918:
12916:
12915:
12899:
12897:
12896:
12891:
12888:
12887:
12886:
12876:
12875:
12874:
12850:
12848:
12847:
12842:
12839:
12838:
12837:
12827:
12826:
12825:
12795:
12793:
12792:
12787:
12784:
12779:
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12777:
12756:
12754:
12753:
12748:
12746:
12745:
12726:
12724:
12723:
12718:
12716:
12714:
12713:
12704:
12702:
12697:
12693:
12692:
12691:
12681:
12680:
12679:
12669:
12668:
12667:
12647:
12646:
12629:
12628:
12620:
12615:
12610:
12609:
12608:
12582:
12580:
12579:
12574:
12572:
12568:
12567:
12551:
12535:
12533:
12532:
12527:
12525:
12524:
12502:
12500:
12499:
12494:
12492:
12472:
12470:
12469:
12468:
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12458:
12439:
12438:
12434:
12433:
12432:
12422:
12421:
12420:
12410:
12409:
12408:
12388:
12387:
12370:
12366:
12365:
12364:
12354:
12353:
12352:
12342:
12341:
12340:
12320:
12319:
12304:
12294:
12289:
12288:
12287:
12260:
12256:
12249:
12246:
12245:
12236:
12235:
12231:
12230:
12229:
12219:
12218:
12217:
12207:
12206:
12205:
12185:
12184:
12170:
12167:
12162:
12142:
12134:
12124:
12119:
12118:
12117:
12084:
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12081:
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12072:
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12060:
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12036:
12034:
12033:
12028:
12023:
12019:
12017:
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12010:
11982:
11981:
11969:
11965:
11963:
11958:
11957:
11956:
11931:
11930:
11908:
11904:
11903:
11899:
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11890:
11865:
11864:
11833:
11828:
11827:
11826:
11801:
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11722:
11719:
11718:
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11633:
11612:
11611:
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11544:
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11540:
11531:
11530:
11526:
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11515:
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11513:
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11501:
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11480:
11467:
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11445:
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11410:
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11386:
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11356:
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11338:
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11331:
11330:
11314:
11312:
11311:
11306:
11303:
11302:
11301:
11291:
11290:
11289:
11268:
11266:
11265:
11260:
11255:
11254:
11241:
11240:
11239:
11229:
11228:
11227:
11180:
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11109:
11088:
11086:
11085:
11080:
11077:
11076:
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11065:
11064:
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11042:
11040:
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11034:
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11027:
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10986:
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10967:
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10936:
10926:
10925:
10924:
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10905:
10904:
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10893:
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10864:
10863:
10862:
10852:
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10850:
10826:
10825:
10824:
10814:
10813:
10812:
10789:, respectively.
10780:
10778:
10777:
10772:
10769:
10768:
10767:
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10737:
10736:
10735:
10725:
10724:
10723:
10698:
10696:
10695:
10690:
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10685:
10675:
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10650:
10649:
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10638:
10637:
10636:
10626:
10625:
10624:
10609:
10608:
10607:
10597:
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10595:
10577:
10576:
10575:
10565:
10564:
10563:
10548:
10547:
10546:
10536:
10535:
10534:
10516:
10515:
10514:
10504:
10503:
10502:
10469:
10467:
10466:
10463:{\displaystyle }
10461:
10456:
10455:
10443:
10442:
10386:
10384:
10383:
10378:
10373:
10372:
10360:
10359:
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10340:
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10330:
10329:
10317:
10316:
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10298:
10278:
10276:
10275:
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10265:
10264:
10252:
10251:
10235:
10233:
10232:
10227:
10222:
10221:
10209:
10208:
10195:
10190:
10171:. Specifically,
10170:
10168:
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10162:
10157:
10156:
10144:
10143:
10125:
10123:
10122:
10117:
10112:
10111:
10063:
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10028:
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10001:
10000:
9987:
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9954:
9946:
9938:
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9922:
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9367:
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9320:
9318:
9317:
9312:
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9293:
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9269:
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9225:
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9176:
9171:
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9088:
9086:
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9063:
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9034:
9022:
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8948:
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8924:
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8900:
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8875:stretch surfaces
8872:
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8856:
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8770:
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8732:
8727:
8710:
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8707:
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8646:
8634:
8633:
8617:
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8591:
8590:
8575:
8573:
8572:
8567:
8543:
8541:
8540:
8535:
8530:
8529:
8517:
8516:
8498:
8479:
8477:
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8469:
8468:
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8450:
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8444:
8439:
8438:
8426:
8425:
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8410:
8400:
8399:
8398:
8377:
8375:
8374:
8369:
8358:
8357:
8344:
8342:
8341:
8338:{\displaystyle }
8336:
8331:
8330:
8318:
8317:
8294:
8292:
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8286:
8275:
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8261:
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8229:
8228:
8215:
8214:
8213:
8203:
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8177:
8174:{\displaystyle }
8172:
8167:
8166:
8154:
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8132:
8131:
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8115:
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8101:
8099:
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8043:
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8009:
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8006:
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7983:
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7969:
7968:
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7956:
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7934:
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7931:
7926:
7921:
7920:
7911:
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7894:
7893:
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7882:
7881:
7880:
7859:
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7856:
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7846:
7845:
7833:
7832:
7819:
7817:
7816:
7811:
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7792:
7791:
7790:
7780:
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7752:
7751:
7746:
7744:
7743:
7727:
7725:
7724:
7719:
7714:
7713:
7700:
7699:
7698:
7688:
7687:
7686:
7662:
7660:
7659:
7654:
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7648:
7636:
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7629:
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7515:
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7493:
7491:
7490:
7474:
7472:
7471:
7466:
7464:
7463:
7447:
7445:
7444:
7441:{\displaystyle }
7439:
7434:
7433:
7421:
7420:
7375:
7373:
7372:
7367:
7355:
7353:
7352:
7349:{\displaystyle }
7347:
7336:
7335:
7317:
7316:
7286:
7284:
7283:
7280:{\displaystyle }
7278:
7267:
7266:
7248:
7247:
7228:
7226:
7225:
7220:
7217:
7210:
7209:
7199:
7192:
7191:
7181:
7159:
7157:
7156:
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7143:
7142:
7126:
7124:
7123:
7120:{\displaystyle }
7118:
7107:
7106:
7088:
7087:
7068:
7066:
7065:
7062:{\displaystyle }
7060:
7055:
7054:
7042:
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7018:
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7010:
6998:
6996:
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6990:
6985:
6984:
6971:
6964:
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6953:
6946:
6945:
6935:
6913:
6911:
6910:
6907:{\displaystyle }
6905:
6894:
6893:
6875:
6874:
6838:
6836:
6835:
6830:
6812:
6810:
6809:
6804:
6802:
6801:
6786:pointing in the
6785:
6783:
6782:
6777:
6775:
6774:
6748:
6746:
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6740:
6735:
6734:
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6725:
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6685:
6684:
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6637:
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6624:
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6487:
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4376:
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4364:
4363:
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4339:
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4331:
4329:
4325:
4323:
4319:
4315:
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4282:
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4280:
4270:
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4227:
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4213:
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4177:
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4144:
4143:
4130:
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4128:
4118:
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4116:
4093:
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4074:
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4060:
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4024:
4021:
4014:
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4006:
4005:
3974:
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3962:
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3949:
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3920:
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3909:
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3879:
3871:
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3788:
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3500:
3476:
3474:
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3468:
3466:
3465:
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3436:
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3423:
3408:
3406:
3405:
3400:
3397:
3392:
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3366:
3364:
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3292:
3277:
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3211:
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3197:
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3133:
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3112:
3076:
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3028:
3016:
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3013:
3008:
2945:
2943:
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2937:
2892:
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2872:
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2826:
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2818:
2798:
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2779:
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2773:
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2752:
2737:
2729:
2708:
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2700:
2692:
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2684:
2665:
2638:
2616:
2570:
2569:
2561:
2549:
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2541:
2514:
2512:
2511:
2506:
2503:
2498:
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2435:
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2427:
2394:
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2324:
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2316:
2283:
2281:
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2275:
2261:
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2252:
2249:
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2197:
2196:
2160:
2159:
2151:
2114:
2113:
2077:
2076:
2068:
2058:
2056:
2055:
2050:
2045:
2041:
2040:
2039:
1977:
1969:
1942:
1938:
1937:
1936:
1874:
1866:
1836:
1834:
1833:
1828:
1801:
1799:
1798:
1793:
1763:
1761:
1760:
1755:
1744:is an arbitrary
1743:
1741:
1740:
1735:
1714:
1712:
1711:
1706:
1689:is an arbitrary
1688:
1686:
1685:
1680:
1659:
1657:
1656:
1651:
1649:
1648:
1643:
1624:
1622:
1621:
1616:
1563:
1561:
1560:
1555:
1541:
1539:
1538:
1533:
1528:
1527:
1522:
1446:
1444:
1443:
1438:
1418:
1416:
1415:
1410:
1408:
1407:
1366:
1364:
1363:
1358:
1356:
1355:
1342:
1340:
1339:
1334:
1323:
1322:
1309:
1307:
1306:
1301:
1299:
1298:
1285:
1283:
1282:
1277:
1274:
1269:
1268:
1267:
1247:of the flow map
1238:
1236:
1235:
1230:
1228:
1227:
1211:In contrast, in
1195:
1193:
1192:
1187:
1182:
1181:
1169:
1168:
1155:
1153:
1152:
1147:
1142:
1141:
1129:
1128:
1115:
1113:
1112:
1107:
1105:
1104:
1088:
1086:
1085:
1080:
1069:
1068:
1055:material surface
1045:
1043:
1042:
1037:
1035:
1034:
1021:
1019:
1018:
1013:
1002:
1001:
972:
970:
969:
964:
962:
961:
952:
951:
942:
941:
928:
926:
925:
920:
915:
914:
902:
901:
886:material surface
882:
880:
879:
874:
872:
871:
859:of the manifold
858:
856:
855:
850:
842:
841:
829:
828:
818:
813:
812:
811:
785:
784:
767:
765:
764:
759:
757:
756:
747:
746:
731:in the extended
724:
722:
721:
716:
708:
707:
695:
694:
676:
675:
662:
657:
656:
655:
634:
633:
624:
623:
593:
592:
577:
575:
574:
569:
567:
566:
553:
551:
550:
545:
540:
539:
527:
526:
513:
511:
510:
505:
503:
502:
479:
477:
476:
471:
468:
463:
462:
461:
440:
438:
437:
432:
430:
429:
410:
408:
407:
402:
400:
399:
387:
386:
374:
373:
345:
343:
342:
337:
335:
334:
325:
324:
308:
306:
305:
300:
295:
294:
282:
281:
257:
256:
243:
238:
237:
236:
215:
213:
212:
207:
202:
201:
189:
188:
173:
172:
159:
157:
156:
151:
149:
148:
98:dynamical system
69:
62:
58:
55:
49:
35:close connection
27:
26:
19:
19688:
19687:
19683:
19682:
19681:
19679:
19678:
19677:
19643:
19642:
19619:10.1.1.506.7756
19551:
19550:
19549:
19531:
19527:
19522:
19520:Further reading
19517:
19516:
19508:
19494:
19467:
19461:
19457:
19442:
19438:
19427:
19423:
19408:
19404:
19393:
19389:
19378:
19374:
19359:
19355:
19318:
19314:
19275:
19271:
19222:
19218:
19177:
19166:
19135:
19131:
19082:
19061:
19012:
19003:
18954:
18939:
18894:
18883:
18838:
18823:
18784:
18780:
18743:
18736:
18705:
18698:
18691:
18669:
18665:
18634:
18630:
18591:
18587:
18572:
18565:
18533:
18527:
18518:
18483:
18470:
18455:
18436:10.1.1.657.3742
18423:
18419:
18382:
18378:
18347:
18340:
18301:
18297:
18281:10.1.1.331.6383
18256:
18252:
18213:
18209:
18178:
18174:
18159:
18127:
18123:
18070:
18066:
18035:
18031:
17994:
17990:
17952:
17948:
17911:
17907:
17852:
17848:
17817:
17813:
17782:
17778:
17747:
17720:
17689:
17685:
17654:
17635:
17630:
17593:
17534:
17503:
17499:
17497:
17494:
17493:
17476:
17472:
17470:
17467:
17466:
17446:
17442:
17433:
17429:
17417:
17413:
17404:
17400:
17398:
17395:
17394:
17371:
17367:
17366:
17359:
17355:
17354:
17348:
17345:
17344:
17334:
17309:
17305:
17294:
17290:
17289:
17282:
17278:
17277:
17262:
17259:
17258:
17251:
17239:
17214:
17211:
17210:
17193:
17189:
17187:
17184:
17183:
17166:
17162:
17160:
17157:
17156:
17140:
17137:
17136:
17120:
17117:
17116:
17097:
17093:
17092:
17085:
17081:
17080:
17074:
17071:
17070:
17050:
17047:
17046:
17029:
17024:
17018:
17015:
17014:
16994:
16990:
16981:
16977:
16975:
16972:
16971:
16954:
16950:
16941:
16936:
16930:
16927:
16926:
16904:
16901:
16900:
16875:
16871:
16862:
16858:
16845:
16841:
16832:
16828:
16816:
16812:
16803:
16799:
16798:
16788:
16784:
16775:
16771:
16762:
16758:
16757:
16754:
16742:
16738:
16729:
16725:
16712:
16708:
16699:
16695:
16683:
16679:
16670:
16666:
16665:
16658:
16654:
16642:
16638:
16629:
16625:
16624:
16621:
16609:
16605:
16596:
16591:
16585:
16582:
16581:
16557:
16554:
16553:
16522:
16518:
16517:
16510:
16506:
16505:
16488:
16486:
16483:
16482:
16455:
16452:
16451:
16435:
16432:
16431:
16411:
16408:
16407:
16400:
16369:
16366:
16365:
16349:
16346:
16345:
16321:
16317:
16305:
16301:
16292:
16288:
16279:
16274:
16268:
16265:
16264:
16238:
16234:
16232:
16229:
16228:
16208:
16204:
16195:
16191:
16189:
16186:
16185:
16168:
16164:
16162:
16159:
16158:
16142:
16139:
16138:
16121:
16117:
16115:
16112:
16111:
16095:
16092:
16091:
16051:
16047:
16038:
16034:
16022:
16018:
16009:
16005:
15994:
15991:
15990:
15964:
15960:
15951:
15947:
15938:
15933:
15927:
15924:
15923:
15902:
15898:
15889:
15885:
15883:
15880:
15879:
15852:
15848:
15839:
15838:
15836:
15833:
15832:
15809:
15805:
15796:
15795:
15793:
15790:
15789:
15766:
15762:
15753:
15752:
15750:
15747:
15746:
15709:
15705:
15696:
15692:
15677:
15673:
15664:
15660:
15658:
15644:
15640:
15631:
15627:
15625:
15624:
15614:
15610:
15601:
15597:
15593:
15581:
15577:
15568:
15564:
15549:
15545:
15536:
15532:
15530:
15516:
15512:
15503:
15499:
15497:
15496:
15486:
15482:
15473:
15469:
15465:
15453:
15449:
15440:
15436:
15434:
15431:
15430:
15407:
15403:
15394:
15390:
15377:
15373:
15364:
15360:
15348:
15344:
15335:
15331:
15330:
15320:
15316:
15307:
15303:
15296:
15293:
15281:
15277:
15268:
15264:
15251:
15247:
15238:
15234:
15222:
15218:
15209:
15205:
15204:
15188:
15184:
15175:
15171:
15170:
15167:
15155:
15151:
15142:
15138:
15136:
15133:
15132:
15109:
15105:
15094:
15090:
15089:
15082:
15078:
15077:
15071:
15068:
15067:
15047:
15043:
15034:
15033:
15025:
15021:
15020:
15016:
15014:
15011:
15010:
14984:
14983:
14981:
14978:
14977:
14957:
14953:
14944:
14943:
14934:
14930:
14928:
14925:
14924:
14904:
14900:
14891:
14887:
14882:
14879:
14878:
14875:
14842:
14838:
14829:
14825:
14820:
14817:
14816:
14772:
14769:
14768:
14743:
14740:
14739:
14691:
14690:
14669:
14665:
14646:
14642:
14634:
14630:
14629:
14622:
14618:
14617:
14601:
14597:
14586:
14582:
14581:
14574:
14570:
14569:
14555:
14552:
14549:
14548:
14528:
14524:
14515:
14511:
14506:
14503:
14502:
14455:
14454:
14413:
14409:
14408:
14406:
14383:
14382:
14380:
14377:
14376:
14318:
14315:
14314:
14286:
14282:
14273:
14266:
14262:
14261:
14255:
14252:
14251:
14231:
14224:
14220:
14219:
14213:
14210:
14209:
14192:
14185:
14181:
14180:
14174:
14171:
14170:
14147:
14140:
14136:
14135:
14120:
14109:
14108:
14100:
14096:
14095:
14090:
14072:
14071:
14069:
14066:
14065:
14032:
14028:
14027:
14023:
14014:
14007:
14003:
14002:
13996:
13993:
13992:
13957:
13946:
13945:
13922:
13918:
13905:
13901:
13897:
13893:
13879:
13878:
13876:
13873:
13872:
13839:
13835:
13834:
13830:
13821:
13814:
13810:
13809:
13803:
13800:
13799:
13777:
13770:
13766:
13765:
13755:
13748:
13744:
13743:
13730:
13723:
13719:
13718:
13712:
13709:
13708:
13689:
13682:
13678:
13677:
13671:
13668:
13667:
13641:
13634:
13630:
13629:
13605:
13601:
13588:
13584:
13573:
13569:
13568:
13563:
13545:
13544:
13542:
13539:
13538:
13505:
13501:
13500:
13496:
13487:
13480:
13476:
13475:
13469:
13466:
13465:
13426:
13422:
13409:
13405:
13388:
13387:
13385:
13382:
13381:
13348:
13344:
13343:
13339:
13330:
13323:
13319:
13318:
13312:
13309:
13308:
13283:
13276:
13272:
13271:
13258:
13251:
13247:
13246:
13240:
13237:
13236:
13215:
13208:
13204:
13203:
13197:
13194:
13193:
13171:
13164:
13160:
13159:
13149:
13142:
13138:
13137:
13124:
13117:
13113:
13112:
13102:
13095:
13091:
13090:
13077:
13070:
13066:
13065:
13056:
13053:
13052:
13011:
13007:
13005:
13002:
13001:
12984:
12980:
12978:
12975:
12974:
12954:
12950:
12941:
12937:
12932:
12929:
12928:
12911:
12907:
12905:
12902:
12901:
12882:
12878:
12877:
12870:
12866:
12865:
12856:
12853:
12852:
12833:
12829:
12828:
12821:
12817:
12816:
12810:
12807:
12806:
12802:
12780:
12773:
12769:
12768:
12762:
12759:
12758:
12741:
12737:
12735:
12732:
12731:
12709:
12705:
12703:
12698:
12687:
12683:
12675:
12671:
12670:
12663:
12659:
12658:
12642:
12638:
12637:
12633:
12621:
12611:
12604:
12600:
12599:
12591:
12590:
12588:
12585:
12584:
12563:
12559:
12555:
12547:
12545:
12542:
12541:
12514:
12510:
12508:
12505:
12504:
12490:
12489:
12464:
12460:
12448:
12444:
12440:
12428:
12424:
12416:
12412:
12411:
12404:
12400:
12399:
12383:
12379:
12378:
12374:
12360:
12356:
12348:
12344:
12343:
12336:
12332:
12331:
12315:
12311:
12310:
12306:
12305:
12303:
12296:
12290:
12283:
12279:
12278:
12265:
12264:
12241:
12237:
12225:
12221:
12213:
12209:
12208:
12201:
12197:
12196:
12180:
12176:
12175:
12171:
12169:
12163:
12152:
12147:
12143:
12133:
12126:
12120:
12113:
12109:
12108:
12094:
12092:
12089:
12088:
12067:
12063:
12062:
12055:
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12050:
12044:
12041:
12040:
12013:
12006:
12002:
12001:
11990:
11986:
11974:
11970:
11959:
11952:
11948:
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11936:
11932:
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11915:
11893:
11886:
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11881:
11870:
11866:
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11807:
11789:
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11710:
11699:
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11687:
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11606:
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11594:
11590:
11589:
11576:
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11509:
11505:
11504:
11497:
11493:
11492:
11476:
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11468:
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11459:
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11447:
11446:
11439:
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11420:
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11415:
11414:
11393:
11389:
11388:
11381:
11377:
11376:
11370:
11367:
11366:
11347:
11344:
11343:
11326:
11322:
11320:
11317:
11316:
11297:
11293:
11292:
11285:
11281:
11280:
11274:
11271:
11270:
11250:
11246:
11235:
11231:
11230:
11223:
11219:
11218:
11212:
11209:
11208:
11163:
11159:
11158:
11151:
11147:
11146:
11140:
11137:
11136:
11117:
11113:
11112:
11105:
11101:
11100:
11094:
11091:
11090:
11071:
11067:
11066:
11059:
11055:
11054:
11048:
11045:
11044:
11022:
11018:
11017:
11010:
11006:
11005:
10993:
10989:
10988:
10981:
10977:
10976:
10961:
10957:
10956:
10949:
10945:
10944:
10932:
10928:
10927:
10920:
10916:
10915:
10900:
10896:
10895:
10888:
10884:
10883:
10870:
10866:
10858:
10854:
10853:
10846:
10842:
10841:
10820:
10816:
10815:
10808:
10804:
10803:
10797:
10794:
10793:
10781:are called the
10763:
10759:
10758:
10751:
10747:
10746:
10731:
10727:
10726:
10719:
10715:
10714:
10708:
10705:
10704:
10701:rotation tensor
10681:
10677:
10676:
10669:
10665:
10664:
10658:
10655:
10654:
10632:
10628:
10627:
10620:
10616:
10615:
10603:
10599:
10598:
10591:
10587:
10586:
10571:
10567:
10566:
10559:
10555:
10554:
10542:
10538:
10537:
10530:
10526:
10525:
10510:
10506:
10505:
10498:
10494:
10493:
10484:
10481:
10480:
10451:
10447:
10438:
10434:
10429:
10426:
10425:
10418:
10401:
10368:
10364:
10355:
10351:
10349:
10346:
10345:
10325:
10321:
10312:
10308:
10299:
10294:
10288:
10285:
10284:
10281:attracting LCSs
10260:
10256:
10247:
10243:
10241:
10238:
10237:
10217:
10213:
10204:
10200:
10191:
10186:
10180:
10177:
10176:
10152:
10148:
10139:
10135:
10133:
10130:
10129:
10106:
10105:
10100:
10094:
10093:
10085:
10075:
10074:
10050:
10046:
10035:
10031:
10030:
10023:
10019:
10018:
9996:
9992:
9981:
9977:
9976:
9969:
9965:
9964:
9959:
9955:
9945:
9933:
9929:
9918:
9914:
9913:
9906:
9902:
9901:
9895:
9892:
9891:
9870:
9866:
9865:
9858:
9854:
9853:
9847:
9844:
9843:
9790:
9789:
9787:
9784:
9783:
9757:
9756:
9754:
9751:
9750:
9724:
9723:
9721:
9718:
9717:
9687:
9686:
9684:
9681:
9680:
9654:
9653:
9651:
9648:
9647:
9630:
9623:
9619:
9618:
9612:
9609:
9608:
9605:
9584:
9581:
9580:
9564:
9561:
9560:
9534:
9530:
9518:
9514:
9505:
9501:
9492:
9487:
9481:
9478:
9477:
9449:
9445:
9443:
9440:
9439:
9419:
9415:
9406:
9402:
9400:
9397:
9396:
9379:
9375:
9373:
9370:
9369:
9353:
9350:
9349:
9332:
9328:
9326:
9323:
9322:
9306:
9303:
9302:
9277:
9273:
9264:
9260:
9258:
9255:
9254:
9234:
9230:
9221:
9217:
9208:
9203:
9197:
9194:
9193:
9166:
9162:
9153:
9149:
9147:
9144:
9143:
9123:
9119:
9110:
9106:
9104:
9101:
9100:
9091:shrink surfaces
9059:
9055:
9046:
9042:
9030:
9026:
9017:
9013:
9006:
9002:
9000:
8997:
8996:
8970:
8966:
8957:
8953:
8944:
8939:
8933:
8930:
8929:
8908:
8904:
8895:
8891:
8889:
8886:
8885:
8843:
8839:
8830:
8826:
8814:
8810:
8801:
8797:
8790:
8786:
8784:
8781:
8780:
8754:
8750:
8741:
8737:
8728:
8723:
8717:
8714:
8713:
8692:
8688:
8679:
8675:
8673:
8670:
8669:
8642:
8638:
8629:
8628:
8626:
8623:
8622:
8599:
8595:
8586:
8585:
8583:
8580:
8579:
8549:
8546:
8545:
8525:
8521:
8512:
8511:
8509:
8506:
8505:
8482:hyperbolic LCSs
8464:
8460:
8458:
8455:
8454:
8434:
8430:
8421:
8417:
8406:
8402:
8401:
8394:
8390:
8389:
8383:
8380:
8379:
8353:
8352:
8350:
8347:
8346:
8326:
8322:
8313:
8309:
8304:
8301:
8300:
8270:
8269:
8267:
8264:
8263:
8237:
8233:
8224:
8220:
8209:
8205:
8204:
8197:
8193:
8192:
8186:
8183:
8182:
8162:
8158:
8149:
8145:
8140:
8137:
8136:
8110:
8109:
8107:
8104:
8103:
8077:
8073:
8064:
8060:
8049:
8045:
8044:
8037:
8033:
8032:
8026:
8023:
8022:
7991:
7987:
7978:
7974:
7963:
7959:
7958:
7951:
7947:
7946:
7940:
7937:
7936:
7916:
7912:
7903:
7899:
7888:
7884:
7883:
7876:
7872:
7871:
7865:
7862:
7861:
7841:
7837:
7828:
7827:
7825:
7822:
7821:
7801:
7797:
7786:
7782:
7781:
7774:
7770:
7769:
7760:
7757:
7756:
7739:
7735:
7733:
7730:
7729:
7709:
7705:
7694:
7690:
7689:
7682:
7678:
7677:
7668:
7665:
7664:
7644:
7640:
7631:
7630:
7622:
7618:
7617:
7613:
7611:
7608:
7607:
7583:
7579:
7570:
7569:
7561:
7557:
7556:
7552:
7550:
7547:
7546:
7523:
7519:
7510:
7509:
7507:
7504:
7503:
7486:
7482:
7480:
7477:
7476:
7459:
7455:
7453:
7450:
7449:
7429:
7425:
7416:
7412:
7407:
7404:
7403:
7400:
7361:
7358:
7357:
7356:with a varying
7331:
7327:
7312:
7308:
7303:
7300:
7299:
7262:
7258:
7243:
7239:
7234:
7231:
7230:
7205:
7201:
7200:
7187:
7183:
7182:
7168:
7165:
7162:
7161:
7138:
7134:
7132:
7129:
7128:
7102:
7098:
7083:
7079:
7074:
7071:
7070:
7050:
7046:
7037:
7033:
7028:
7025:
7024:
7004:
7001:
7000:
6980:
6976:
6959:
6955:
6954:
6941:
6937:
6936:
6922:
6919:
6916:
6915:
6889:
6885:
6870:
6866:
6861:
6858:
6857:
6853:
6818:
6815:
6814:
6797:
6793:
6791:
6788:
6787:
6770:
6766:
6764:
6761:
6760:
6729:
6728:
6715:
6711:
6707:
6703:
6693:
6689:
6680:
6676:
6667:
6663:
6648:
6644:
6632:
6628:
6619:
6615:
6606:
6602:
6587:
6583:
6582:
6580:
6578:
6565:
6561:
6557:
6553:
6543:
6539:
6530:
6526:
6517:
6513:
6498:
6494:
6482:
6478:
6469:
6465:
6456:
6452:
6437:
6433:
6432:
6430:
6428:
6415:
6411:
6407:
6403:
6393:
6389:
6380:
6376:
6367:
6363:
6348:
6344:
6332:
6328:
6319:
6315:
6306:
6302:
6287:
6283:
6282:
6280:
6277:
6276:
6263:
6259:
6255:
6251:
6241:
6237:
6228:
6224:
6215:
6211:
6196:
6192:
6180:
6176:
6167:
6163:
6154:
6150:
6135:
6131:
6130:
6128:
6126:
6113:
6109:
6105:
6101:
6091:
6087:
6078:
6074:
6065:
6061:
6046:
6042:
6030:
6026:
6017:
6013:
6004:
6000:
5985:
5981:
5980:
5978:
5976:
5963:
5959:
5955:
5951:
5941:
5937:
5928:
5924:
5915:
5911:
5896:
5892:
5880:
5876:
5867:
5863:
5854:
5850:
5835:
5831:
5830:
5828:
5825:
5824:
5811:
5807:
5803:
5799:
5789:
5785:
5776:
5772:
5763:
5759:
5744:
5740:
5728:
5724:
5715:
5711:
5702:
5698:
5683:
5679:
5678:
5676:
5674:
5661:
5657:
5653:
5649:
5639:
5635:
5626:
5622:
5613:
5609:
5594:
5590:
5578:
5574:
5565:
5561:
5552:
5548:
5533:
5529:
5528:
5526:
5524:
5511:
5507:
5503:
5499:
5489:
5485:
5476:
5472:
5463:
5459:
5444:
5440:
5428:
5424:
5415:
5411:
5402:
5398:
5383:
5379:
5378:
5376:
5369:
5368:
5356:
5352:
5343:
5336:
5332:
5331:
5322:
5319:
5318:
5298:
5294:
5285:
5281:
5267:
5264:
5263:
5243:
5239:
5230:
5226:
5217:
5213:
5202:
5199:
5198:
5181:
5177:
5175:
5172:
5171:
5151:
5147:
5138:
5134:
5120:
5117:
5116:
5096:
5092:
5083:
5076:
5072:
5071:
5062:
5059:
5058:
5032:
5028:
5027:
5020:
5016:
5015:
5001:
4998:
4995:
4994:
4977:
4973:
4971:
4968:
4967:
4947:
4943:
4932:
4928:
4927:
4920:
4916:
4915:
4901:
4898:
4895:
4894:
4877:
4873:
4871:
4868:
4867:
4828:
4824:
4815:
4811:
4793:
4789:
4780:
4776:
4769:
4764:
4752:
4748:
4737:
4733:
4732:
4725:
4721:
4720:
4706:
4703:
4700:
4699:
4673:
4669:
4660:
4656:
4648:
4636:
4632:
4631:
4624:
4620:
4619:
4614:
4603:
4600:
4599:
4577:
4573:
4564:
4560:
4558:
4546:
4542:
4531:
4527:
4526:
4519:
4515:
4514:
4508:
4505:
4504:
4487:
4483:
4481:
4478:
4477:
4454:
4450:
4449:
4442:
4438:
4437:
4424:
4411:
4407:
4406:
4399:
4395:
4394:
4386:
4382:
4381:
4370:
4366:
4365:
4358:
4354:
4353:
4347:
4344:
4343:
4327:
4326:
4310:
4306:
4291:
4287:
4276:
4272:
4271:
4264:
4260:
4259:
4243:
4239:
4232:
4228:
4226:
4204:
4200:
4193:
4189:
4188:
4175:
4174:
4158:
4154:
4139:
4135:
4124:
4120:
4119:
4112:
4108:
4107:
4088:
4084:
4069:
4065:
4054:
4050:
4049:
4042:
4038:
4037:
4029:
4025:
4023:
4001:
3997:
3990:
3986:
3985:
3972:
3971:
3957:
3953:
3944:
3940:
3931:
3927:
3926:
3922:
3900:
3896:
3889:
3885:
3884:
3870:
3858:
3847:
3838:
3834:
3823:
3819:
3818:
3811:
3807:
3806:
3798:
3796:
3793:
3792:
3773:
3769:
3767:
3764:
3763:
3743:
3739:
3731:
3719:
3715:
3704:
3700:
3699:
3692:
3688:
3687:
3668:
3664:
3655:
3651:
3642:
3637:
3636:
3634:
3631:
3630:
3610:
3606:
3597:
3593:
3579:
3576:
3575:
3558:
3553:
3552:
3550:
3547:
3546:
3526:
3522:
3514:
3511:
3510:
3482:
3479:
3478:
3461:
3457:
3455:
3452:
3451:
3431:
3427:
3419:
3414:
3411:
3410:
3393:
3386:
3382:
3381:
3372:
3369:
3368:
3348:
3344:
3335:
3331:
3317:
3314:
3313:
3288:
3286:
3283:
3282:
3259:
3255:
3246:
3245:
3243:
3240:
3239:
3219:
3215:
3206:
3205:
3203:
3200:
3199:
3179:
3175:
3166:
3165:
3163:
3160:
3159:
3156:
3140:hyperbolic LCSs
3118:
3117:
3108:
3107:
3105:
3102:
3101:
3083:
3081:Hyperbolic LCSs
3062:
3059:
3058:
3042:
3039:
3038:
3022:
3019:
3018:
2951:
2948:
2947:
2898:
2895:
2894:
2878:
2875:
2874:
2858:
2855:
2854:
2804:
2801:
2800:
2774:
2763:
2762:
2753:
2742:
2741:
2728:
2720:
2717:
2716:
2686:
2685:
2677:
2666:
2658:
2640:
2639:
2631:
2617:
2609:
2596:
2595:
2560:
2559:
2557:
2554:
2553:
2520:
2517:
2516:
2499:
2492:
2488:
2487:
2478:
2475:
2474:
2443:
2441:
2438:
2437:
2403:
2400:
2399:
2365:
2362:
2361:
2330:
2327:
2326:
2295:
2292:
2291:
2251:
2250:
2244:
2240:
2192:
2188:
2150:
2149:
2109:
2105:
2067:
2066:
2064:
2061:
2060:
2035:
2031:
1982:
1978:
1968:
1932:
1928:
1879:
1875:
1865:
1842:
1839:
1838:
1807:
1804:
1803:
1772:
1769:
1768:
1749:
1746:
1745:
1720:
1717:
1716:
1694:
1691:
1690:
1665:
1662:
1661:
1644:
1639:
1638:
1630:
1627:
1626:
1574:
1571:
1570:
1549:
1546:
1545:
1523:
1518:
1517:
1475:
1472:
1471:
1467:
1432:
1429:
1428:
1403:
1402:
1400:
1397:
1396:
1386:
1351:
1350:
1348:
1345:
1344:
1318:
1317:
1315:
1312:
1311:
1294:
1293:
1291:
1288:
1287:
1270:
1263:
1259:
1258:
1252:
1249:
1248:
1223:
1222:
1220:
1217:
1216:
1196:. In classical
1177:
1173:
1164:
1163:
1161:
1158:
1157:
1137:
1133:
1124:
1123:
1121:
1118:
1117:
1100:
1099:
1097:
1094:
1093:
1064:
1063:
1061:
1058:
1057:
1030:
1029:
1027:
1024:
1023:
997:
996:
994:
991:
990:
979:
957:
956:
947:
946:
937:
936:
934:
931:
930:
910:
906:
897:
896:
894:
891:
890:
867:
866:
864:
861:
860:
837:
833:
824:
823:
814:
807:
803:
802:
780:
779:
777:
774:
773:
752:
751:
742:
741:
739:
736:
735:
703:
699:
690:
689:
668:
664:
658:
651:
647:
646:
629:
628:
619:
618:
588:
587:
585:
582:
581:
562:
561:
559:
556:
555:
535:
531:
522:
521:
519:
516:
515:
498:
497:
489:
486:
485:
464:
457:
453:
452:
446:
443:
442:
425:
424:
416:
413:
412:
395:
394:
382:
378:
369:
365:
351:
348:
347:
330:
329:
320:
316:
314:
311:
310:
290:
286:
277:
273:
252:
248:
239:
232:
228:
227:
221:
218:
217:
197:
193:
184:
180:
168:
167:
165:
162:
161:
144:
143:
141:
138:
137:
123:
118:
70:
59:
53:
50:
39:
28:
24:
17:
12:
11:
5:
19686:
19676:
19675:
19670:
19665:
19660:
19658:Fluid dynamics
19655:
19641:
19640:
19593:
19532:
19525:
19524:
19523:
19521:
19518:
19515:
19514:
19511:on 2014-10-06.
19492:
19455:
19452:on 2010-06-13.
19436:
19429:Mills, Peter.
19421:
19418:on 2011-05-17.
19402:
19387:
19372:
19369:on 2009-01-07.
19363:"ManGen 1.4.4"
19353:
19312:
19269:
19216:
19164:
19129:
19059:
19001:
18937:
18881:
18821:
18778:
18734:
18715:(7): 574–598.
18696:
18689:
18663:
18628:
18585:
18582:on 2012-07-23.
18576:"LCS Tutorial"
18563:
18516:
18487:Marsden, J. E.
18468:
18453:
18417:
18376:
18338:
18311:(14): 144502.
18295:
18266:(4): 248–277.
18250:
18207:
18172:
18157:
18140:10.1.1.63.4342
18121:
18064:
18029:
17988:
17946:
17905:
17846:
17811:
17776:
17757:(1): 137–162.
17718:
17683:
17632:
17631:
17629:
17626:
17625:
17624:
17619:
17614:
17609:
17604:
17599:
17592:
17589:
17588:
17587:
17580:
17573:
17570:
17563:
17556:
17549:
17533:
17530:
17506:
17502:
17479:
17475:
17454:
17449:
17445:
17441:
17436:
17432:
17428:
17425:
17420:
17416:
17412:
17407:
17403:
17374:
17370:
17362:
17358:
17353:
17333:
17330:
17317:
17312:
17308:
17304:
17297:
17293:
17285:
17281:
17276:
17272:
17269:
17266:
17250:
17247:
17242:Parabolic LCSs
17238:
17237:Parabolic LCSs
17235:
17231:Great Red Spot
17218:
17196:
17192:
17169:
17165:
17144:
17124:
17100:
17096:
17088:
17084:
17079:
17054:
17032:
17027:
17023:
16997:
16993:
16989:
16984:
16980:
16957:
16953:
16949:
16944:
16939:
16935:
16914:
16911:
16908:
16899:Note that for
16886:
16883:
16878:
16874:
16870:
16865:
16861:
16853:
16848:
16844:
16840:
16835:
16831:
16827:
16824:
16819:
16815:
16811:
16806:
16802:
16796:
16791:
16787:
16783:
16778:
16774:
16770:
16765:
16761:
16753:
16750:
16745:
16741:
16737:
16732:
16728:
16720:
16715:
16711:
16707:
16702:
16698:
16694:
16691:
16686:
16682:
16678:
16673:
16669:
16661:
16657:
16653:
16650:
16645:
16641:
16637:
16632:
16628:
16620:
16617:
16612:
16608:
16604:
16599:
16594:
16590:
16567:
16564:
16561:
16541:
16538:
16535:
16532:
16525:
16521:
16513:
16509:
16504:
16500:
16495:
16492:
16465:
16462:
16459:
16439:
16428:Great Red Spot
16415:
16399:
16396:
16373:
16353:
16329:
16324:
16320:
16316:
16313:
16308:
16304:
16300:
16295:
16291:
16287:
16282:
16277:
16273:
16252:
16249:
16246:
16241:
16237:
16216:
16211:
16207:
16203:
16198:
16194:
16171:
16167:
16146:
16124:
16120:
16099:
16085:
16084:
16081:shear surfaces
16068:
16065:
16062:
16059:
16054:
16050:
16046:
16041:
16037:
16033:
16030:
16025:
16021:
16017:
16012:
16008:
16004:
16001:
15998:
15988:
15972:
15967:
15963:
15959:
15954:
15950:
15946:
15941:
15936:
15932:
15921:
15910:
15905:
15901:
15897:
15892:
15888:
15877:
15873:
15872:
15860:
15855:
15851:
15847:
15842:
15829:
15817:
15812:
15808:
15804:
15799:
15786:
15774:
15769:
15765:
15761:
15756:
15743:
15720:
15717:
15712:
15708:
15704:
15699:
15695:
15685:
15680:
15676:
15672:
15667:
15663:
15657:
15652:
15647:
15643:
15639:
15634:
15630:
15622:
15617:
15613:
15609:
15604:
15600:
15592:
15589:
15584:
15580:
15576:
15571:
15567:
15557:
15552:
15548:
15544:
15539:
15535:
15529:
15524:
15519:
15515:
15511:
15506:
15502:
15494:
15489:
15485:
15481:
15476:
15472:
15464:
15461:
15456:
15452:
15448:
15443:
15439:
15418:
15415:
15410:
15406:
15402:
15397:
15393:
15385:
15380:
15376:
15372:
15367:
15363:
15359:
15356:
15351:
15347:
15343:
15338:
15334:
15328:
15323:
15319:
15315:
15310:
15306:
15302:
15299:
15292:
15289:
15284:
15280:
15276:
15271:
15267:
15259:
15254:
15250:
15246:
15241:
15237:
15233:
15230:
15225:
15221:
15217:
15212:
15208:
15202:
15199:
15196:
15191:
15187:
15183:
15178:
15174:
15166:
15163:
15158:
15154:
15150:
15145:
15141:
15117:
15112:
15108:
15104:
15097:
15093:
15085:
15081:
15076:
15055:
15050:
15046:
15042:
15037:
15028:
15024:
15019:
14998:
14995:
14992:
14987:
14965:
14960:
14956:
14952:
14947:
14942:
14937:
14933:
14912:
14907:
14903:
14899:
14894:
14890:
14886:
14874:
14871:
14850:
14845:
14841:
14837:
14832:
14828:
14824:
14791:
14788:
14785:
14782:
14779:
14776:
14756:
14753:
14750:
14747:
14725:
14722:
14719:
14714:
14710:
14707:
14704:
14698:
14695:
14689:
14686:
14683:
14680:
14677:
14672:
14668:
14664:
14661:
14658:
14655:
14652:
14649:
14645:
14637:
14633:
14625:
14621:
14616:
14612:
14609:
14604:
14600:
14596:
14589:
14585:
14577:
14573:
14567:
14564:
14561:
14558:
14536:
14531:
14527:
14523:
14518:
14514:
14510:
14490:
14484:
14481:
14478:
14475:
14472:
14469:
14464:
14461:
14458:
14452:
14449:
14445:
14442:
14439:
14436:
14433:
14430:
14425:
14422:
14419:
14416:
14412:
14405:
14402:
14399:
14396:
14390:
14387:
14364:
14361:
14358:
14355:
14352:
14349:
14346:
14343:
14340:
14337:
14334:
14331:
14328:
14325:
14322:
14294:
14289:
14285:
14281:
14276:
14269:
14265:
14260:
14234:
14227:
14223:
14218:
14195:
14188:
14184:
14179:
14158:
14155:
14150:
14143:
14139:
14134:
14129:
14126:
14123:
14116:
14113:
14103:
14099:
14093:
14089:
14085:
14079:
14076:
14051:
14048:
14045:
14042:
14035:
14031:
14026:
14022:
14017:
14010:
14006:
14001:
13978:
13975:
13971:
13966:
13963:
13960:
13953:
13950:
13944:
13940:
13936:
13933:
13930:
13925:
13921:
13917:
13914:
13911:
13908:
13904:
13900:
13896:
13892:
13886:
13883:
13858:
13855:
13852:
13849:
13842:
13838:
13833:
13829:
13824:
13817:
13813:
13808:
13785:
13780:
13773:
13769:
13764:
13758:
13751:
13747:
13742:
13738:
13733:
13726:
13722:
13717:
13692:
13685:
13681:
13676:
13652:
13649:
13644:
13637:
13633:
13628:
13623:
13619:
13616:
13613:
13608:
13604:
13600:
13597:
13594:
13591:
13587:
13583:
13576:
13572:
13566:
13562:
13558:
13552:
13549:
13524:
13521:
13518:
13515:
13508:
13504:
13499:
13495:
13490:
13483:
13479:
13474:
13451:
13448:
13444:
13440:
13437:
13434:
13429:
13425:
13421:
13418:
13415:
13412:
13408:
13404:
13401:
13395:
13392:
13367:
13364:
13361:
13358:
13351:
13347:
13342:
13338:
13333:
13326:
13322:
13317:
13286:
13279:
13275:
13270:
13266:
13261:
13254:
13250:
13245:
13218:
13211:
13207:
13202:
13179:
13174:
13167:
13163:
13158:
13152:
13145:
13141:
13136:
13132:
13127:
13120:
13116:
13111:
13105:
13098:
13094:
13089:
13085:
13080:
13073:
13069:
13064:
13060:
13014:
13010:
12987:
12983:
12962:
12957:
12953:
12949:
12944:
12940:
12936:
12914:
12910:
12885:
12881:
12873:
12869:
12864:
12860:
12836:
12832:
12824:
12820:
12815:
12801:
12798:
12783:
12776:
12772:
12767:
12744:
12740:
12712:
12708:
12701:
12696:
12690:
12686:
12678:
12674:
12666:
12662:
12657:
12653:
12650:
12645:
12641:
12636:
12632:
12627:
12624:
12619:
12614:
12607:
12603:
12598:
12594:
12571:
12566:
12562:
12558:
12554:
12550:
12523:
12520:
12517:
12513:
12488:
12485:
12482:
12479:
12475:
12467:
12463:
12457:
12454:
12451:
12447:
12443:
12437:
12431:
12427:
12419:
12415:
12407:
12403:
12398:
12394:
12391:
12386:
12382:
12377:
12373:
12369:
12363:
12359:
12351:
12347:
12339:
12335:
12330:
12326:
12323:
12318:
12314:
12309:
12302:
12299:
12297:
12293:
12286:
12282:
12277:
12273:
12270:
12267:
12266:
12263:
12259:
12255:
12252:
12244:
12240:
12234:
12228:
12224:
12216:
12212:
12204:
12200:
12195:
12191:
12188:
12183:
12179:
12174:
12166:
12161:
12158:
12155:
12151:
12146:
12140:
12137:
12132:
12129:
12127:
12123:
12116:
12112:
12107:
12103:
12100:
12097:
12096:
12070:
12066:
12058:
12054:
12049:
12026:
12022:
12016:
12009:
12005:
12000:
11996:
11993:
11989:
11985:
11980:
11977:
11973:
11968:
11962:
11955:
11951:
11946:
11942:
11939:
11935:
11928:
11925:
11922:
11919:
11914:
11911:
11907:
11902:
11896:
11889:
11885:
11880:
11876:
11873:
11869:
11862:
11859:
11856:
11853:
11848:
11845:
11841:
11837:
11832:
11825:
11821:
11816:
11787:
11784:
11781:
11778:
11775:
11772:
11767:
11764:
11759:
11756:
11753:
11750:
11747:
11744:
11741:
11738:
11735:
11732:
11729:
11725:
11717:
11713:
11707:
11702:
11698:
11690:
11686:
11678:
11674:
11669:
11665:
11662:
11657:
11653:
11649:
11641:
11636:
11632:
11629:
11625:
11620:
11617:
11615:
11609:
11605:
11597:
11593:
11588:
11584:
11581:
11578:
11577:
11574:
11571:
11565:
11562:
11557:
11554:
11551:
11547:
11539:
11535:
11529:
11524:
11520:
11512:
11508:
11500:
11496:
11491:
11487:
11484:
11479:
11475:
11471:
11465:
11462:
11460:
11454:
11450:
11442:
11438:
11433:
11429:
11426:
11423:
11422:
11396:
11392:
11384:
11380:
11375:
11354:
11351:
11329:
11325:
11300:
11296:
11288:
11284:
11279:
11258:
11253:
11249:
11245:
11238:
11234:
11226:
11222:
11217:
11166:
11162:
11154:
11150:
11145:
11120:
11116:
11108:
11104:
11099:
11074:
11070:
11062:
11058:
11053:
11032:
11025:
11021:
11013:
11009:
11004:
10996:
10992:
10984:
10980:
10975:
10971:
10964:
10960:
10952:
10948:
10943:
10935:
10931:
10923:
10919:
10914:
10910:
10903:
10899:
10891:
10887:
10882:
10878:
10873:
10869:
10861:
10857:
10849:
10845:
10840:
10836:
10833:
10830:
10823:
10819:
10811:
10807:
10802:
10766:
10762:
10754:
10750:
10745:
10741:
10734:
10730:
10722:
10718:
10713:
10699:is called the
10684:
10680:
10672:
10668:
10663:
10642:
10635:
10631:
10623:
10619:
10614:
10606:
10602:
10594:
10590:
10585:
10581:
10574:
10570:
10562:
10558:
10553:
10545:
10541:
10533:
10529:
10524:
10520:
10513:
10509:
10501:
10497:
10492:
10488:
10459:
10454:
10450:
10446:
10441:
10437:
10433:
10417:
10414:
10400:
10397:
10376:
10371:
10367:
10363:
10358:
10354:
10333:
10328:
10324:
10320:
10315:
10311:
10307:
10302:
10297:
10293:
10268:
10263:
10259:
10255:
10250:
10246:
10225:
10220:
10216:
10212:
10207:
10203:
10199:
10194:
10189:
10185:
10173:repelling LCSs
10160:
10155:
10151:
10147:
10142:
10138:
10115:
10110:
10104:
10101:
10099:
10096:
10095:
10092:
10089:
10086:
10084:
10081:
10080:
10078:
10073:
10070:
10066:
10062:
10058:
10053:
10049:
10045:
10038:
10034:
10026:
10022:
10017:
10013:
10010:
10007:
10004:
9999:
9995:
9991:
9984:
9980:
9972:
9968:
9963:
9958:
9952:
9949:
9944:
9941:
9936:
9932:
9928:
9921:
9917:
9909:
9905:
9900:
9873:
9869:
9861:
9857:
9852:
9836:null-geodesics
9829:metric tensors
9817:Shearless LCSs
9804:
9801:
9798:
9793:
9771:
9768:
9765:
9760:
9738:
9735:
9732:
9727:
9701:
9698:
9695:
9690:
9668:
9665:
9662:
9657:
9633:
9626:
9622:
9617:
9604:
9601:
9588:
9568:
9542:
9537:
9533:
9529:
9526:
9521:
9517:
9513:
9508:
9504:
9500:
9495:
9490:
9486:
9463:
9460:
9457:
9452:
9448:
9427:
9422:
9418:
9414:
9409:
9405:
9382:
9378:
9357:
9335:
9331:
9310:
9285:
9280:
9276:
9272:
9267:
9263:
9242:
9237:
9233:
9229:
9224:
9220:
9216:
9211:
9206:
9202:
9174:
9169:
9165:
9161:
9156:
9152:
9131:
9126:
9122:
9118:
9113:
9109:
9095:
9094:
9078:
9075:
9071:
9067:
9062:
9058:
9054:
9049:
9045:
9041:
9038:
9033:
9029:
9025:
9020:
9016:
9012:
9009:
9005:
8994:
8978:
8973:
8969:
8965:
8960:
8956:
8952:
8947:
8942:
8938:
8927:
8916:
8911:
8907:
8903:
8898:
8894:
8883:
8879:
8878:
8862:
8859:
8855:
8851:
8846:
8842:
8838:
8833:
8829:
8825:
8822:
8817:
8813:
8809:
8804:
8800:
8796:
8793:
8789:
8778:
8762:
8757:
8753:
8749:
8744:
8740:
8736:
8731:
8726:
8722:
8711:
8700:
8695:
8691:
8687:
8682:
8678:
8667:
8663:
8662:
8650:
8645:
8641:
8637:
8632:
8619:
8607:
8602:
8598:
8594:
8589:
8576:
8565:
8562:
8559:
8556:
8553:
8533:
8528:
8524:
8520:
8515:
8502:
8467:
8463:
8442:
8437:
8433:
8429:
8424:
8420:
8416:
8409:
8405:
8397:
8393:
8388:
8367:
8364:
8361:
8356:
8334:
8329:
8325:
8321:
8316:
8312:
8308:
8284:
8281:
8278:
8273:
8251:
8248:
8245:
8240:
8236:
8232:
8227:
8223:
8219:
8212:
8208:
8200:
8196:
8191:
8170:
8165:
8161:
8157:
8152:
8148:
8144:
8124:
8121:
8118:
8113:
8091:
8088:
8085:
8080:
8076:
8072:
8067:
8063:
8059:
8052:
8048:
8040:
8036:
8031:
8010:(cf. Fig. 7).
7999:
7994:
7990:
7986:
7981:
7977:
7973:
7966:
7962:
7954:
7950:
7945:
7924:
7919:
7915:
7909:
7906:
7902:
7898:
7891:
7887:
7879:
7875:
7870:
7849:
7844:
7840:
7836:
7831:
7809:
7804:
7800:
7796:
7789:
7785:
7777:
7773:
7768:
7764:
7742:
7738:
7717:
7712:
7708:
7704:
7697:
7693:
7685:
7681:
7676:
7672:
7652:
7647:
7643:
7639:
7634:
7625:
7621:
7616:
7591:
7586:
7582:
7578:
7573:
7564:
7560:
7555:
7531:
7526:
7522:
7518:
7513:
7489:
7485:
7462:
7458:
7437:
7432:
7428:
7424:
7419:
7415:
7411:
7399:
7396:
7395:
7394:
7391:
7388:
7381:
7376:are generally
7365:
7345:
7342:
7339:
7334:
7330:
7326:
7323:
7320:
7315:
7311:
7307:
7296:
7276:
7273:
7270:
7265:
7261:
7257:
7254:
7251:
7246:
7242:
7238:
7216:
7213:
7208:
7204:
7198:
7195:
7190:
7186:
7180:
7177:
7174:
7171:
7149:
7146:
7141:
7137:
7116:
7113:
7110:
7105:
7101:
7097:
7094:
7091:
7086:
7082:
7078:
7058:
7053:
7049:
7045:
7040:
7036:
7032:
7008:
6999:under varying
6988:
6983:
6979:
6975:
6970:
6967:
6962:
6958:
6952:
6949:
6944:
6940:
6934:
6931:
6928:
6925:
6903:
6900:
6897:
6892:
6888:
6884:
6881:
6878:
6873:
6869:
6865:
6852:
6849:
6828:
6825:
6822:
6800:
6796:
6773:
6769:
6738:
6733:
6724:
6718:
6714:
6710:
6706:
6701:
6696:
6692:
6688:
6683:
6679:
6675:
6670:
6666:
6662:
6659:
6656:
6651:
6647:
6643:
6640:
6635:
6631:
6627:
6622:
6618:
6614:
6609:
6605:
6601:
6598:
6595:
6590:
6586:
6579:
6574:
6568:
6564:
6560:
6556:
6551:
6546:
6542:
6538:
6533:
6529:
6525:
6520:
6516:
6512:
6509:
6506:
6501:
6497:
6493:
6490:
6485:
6481:
6477:
6472:
6468:
6464:
6459:
6455:
6451:
6448:
6445:
6440:
6436:
6429:
6424:
6418:
6414:
6410:
6406:
6401:
6396:
6392:
6388:
6383:
6379:
6375:
6370:
6366:
6362:
6359:
6356:
6351:
6347:
6343:
6340:
6335:
6331:
6327:
6322:
6318:
6314:
6309:
6305:
6301:
6298:
6295:
6290:
6286:
6279:
6278:
6272:
6266:
6262:
6258:
6254:
6249:
6244:
6240:
6236:
6231:
6227:
6223:
6218:
6214:
6210:
6207:
6204:
6199:
6195:
6191:
6188:
6183:
6179:
6175:
6170:
6166:
6162:
6157:
6153:
6149:
6146:
6143:
6138:
6134:
6127:
6122:
6116:
6112:
6108:
6104:
6099:
6094:
6090:
6086:
6081:
6077:
6073:
6068:
6064:
6060:
6057:
6054:
6049:
6045:
6041:
6038:
6033:
6029:
6025:
6020:
6016:
6012:
6007:
6003:
5999:
5996:
5993:
5988:
5984:
5977:
5972:
5966:
5962:
5958:
5954:
5949:
5944:
5940:
5936:
5931:
5927:
5923:
5918:
5914:
5910:
5907:
5904:
5899:
5895:
5891:
5888:
5883:
5879:
5875:
5870:
5866:
5862:
5857:
5853:
5849:
5846:
5843:
5838:
5834:
5827:
5826:
5820:
5814:
5810:
5806:
5802:
5797:
5792:
5788:
5784:
5779:
5775:
5771:
5766:
5762:
5758:
5755:
5752:
5747:
5743:
5739:
5736:
5731:
5727:
5723:
5718:
5714:
5710:
5705:
5701:
5697:
5694:
5691:
5686:
5682:
5675:
5670:
5664:
5660:
5656:
5652:
5647:
5642:
5638:
5634:
5629:
5625:
5621:
5616:
5612:
5608:
5605:
5602:
5597:
5593:
5589:
5586:
5581:
5577:
5573:
5568:
5564:
5560:
5555:
5551:
5547:
5544:
5541:
5536:
5532:
5525:
5520:
5514:
5510:
5506:
5502:
5497:
5492:
5488:
5484:
5479:
5475:
5471:
5466:
5462:
5458:
5455:
5452:
5447:
5443:
5439:
5436:
5431:
5427:
5423:
5418:
5414:
5410:
5405:
5401:
5397:
5394:
5391:
5386:
5382:
5375:
5374:
5372:
5367:
5364:
5359:
5355:
5351:
5346:
5339:
5335:
5330:
5326:
5306:
5301:
5297:
5293:
5288:
5284:
5280:
5277:
5274:
5271:
5251:
5246:
5242:
5238:
5233:
5229:
5225:
5220:
5216:
5212:
5209:
5206:
5184:
5180:
5159:
5154:
5150:
5146:
5141:
5137:
5133:
5130:
5127:
5124:
5104:
5099:
5095:
5091:
5086:
5079:
5075:
5070:
5066:
5035:
5031:
5023:
5019:
5013:
5010:
5007:
5004:
4980:
4976:
4955:
4950:
4946:
4942:
4935:
4931:
4923:
4919:
4913:
4910:
4907:
4904:
4880:
4876:
4839:
4836:
4831:
4827:
4823:
4818:
4814:
4810:
4807:
4801:
4796:
4792:
4788:
4783:
4779:
4775:
4772:
4768:
4763:
4760:
4755:
4751:
4747:
4740:
4736:
4728:
4724:
4718:
4715:
4712:
4709:
4681:
4676:
4672:
4668:
4663:
4659:
4655:
4651:
4647:
4639:
4635:
4627:
4623:
4618:
4613:
4610:
4607:
4585:
4580:
4576:
4572:
4567:
4563:
4557:
4554:
4549:
4545:
4541:
4534:
4530:
4522:
4518:
4513:
4490:
4486:
4457:
4453:
4445:
4441:
4436:
4432:
4427:
4422:
4414:
4410:
4402:
4398:
4393:
4389:
4385:
4380:
4373:
4369:
4361:
4357:
4352:
4322:
4318:
4313:
4309:
4305:
4302:
4299:
4294:
4290:
4286:
4279:
4275:
4267:
4263:
4258:
4254:
4251:
4246:
4242:
4238:
4235:
4231:
4223:
4220:
4216:
4212:
4207:
4203:
4199:
4196:
4192:
4187:
4183:
4180:
4178:
4176:
4170:
4166:
4161:
4157:
4153:
4150:
4147:
4142:
4138:
4134:
4127:
4123:
4115:
4111:
4106:
4102:
4099:
4096:
4091:
4087:
4083:
4080:
4077:
4072:
4068:
4064:
4057:
4053:
4045:
4041:
4036:
4032:
4028:
4020:
4017:
4013:
4009:
4004:
4000:
3996:
3993:
3989:
3984:
3980:
3977:
3975:
3973:
3969:
3965:
3960:
3956:
3952:
3947:
3943:
3939:
3934:
3930:
3925:
3919:
3916:
3912:
3908:
3903:
3899:
3895:
3892:
3888:
3883:
3877:
3874:
3867:
3864:
3861:
3857:
3853:
3850:
3848:
3846:
3841:
3837:
3833:
3826:
3822:
3814:
3810:
3805:
3801:
3800:
3776:
3772:
3751:
3746:
3742:
3738:
3734:
3730:
3727:
3722:
3718:
3714:
3707:
3703:
3695:
3691:
3686:
3682:
3679:
3676:
3671:
3667:
3663:
3658:
3654:
3650:
3645:
3640:
3618:
3613:
3609:
3605:
3600:
3596:
3592:
3589:
3586:
3583:
3561:
3556:
3534:
3529:
3525:
3521:
3518:
3498:
3495:
3492:
3489:
3486:
3464:
3460:
3439:
3434:
3430:
3426:
3422:
3418:
3396:
3389:
3385:
3380:
3376:
3356:
3351:
3347:
3343:
3338:
3334:
3330:
3327:
3324:
3321:
3301:
3298:
3295:
3291:
3267:
3262:
3258:
3254:
3249:
3227:
3222:
3218:
3214:
3209:
3187:
3182:
3178:
3174:
3169:
3155:
3152:
3121:
3116:
3111:
3095:attracting LCS
3082:
3079:
3066:
3046:
3026:
3006:
3003:
3000:
2997:
2994:
2991:
2988:
2985:
2982:
2979:
2976:
2973:
2970:
2967:
2964:
2961:
2958:
2955:
2935:
2932:
2929:
2926:
2923:
2920:
2917:
2914:
2911:
2908:
2905:
2902:
2882:
2862:
2816:
2812:
2808:
2788:
2785:
2782:
2777:
2772:
2769:
2766:
2761:
2756:
2751:
2748:
2745:
2740:
2735:
2732:
2727:
2724:
2698:
2695:
2690:
2683:
2680:
2676:
2673:
2670:
2667:
2664:
2661:
2657:
2654:
2651:
2648:
2645:
2642:
2641:
2637:
2634:
2630:
2627:
2624:
2621:
2618:
2615:
2612:
2608:
2605:
2602:
2601:
2599:
2594:
2591:
2588:
2585:
2582:
2579:
2576:
2573:
2567:
2564:
2539:
2536:
2533:
2530:
2527:
2524:
2502:
2495:
2491:
2486:
2482:
2462:
2459:
2456:
2453:
2450:
2446:
2425:
2422:
2419:
2416:
2413:
2410:
2407:
2384:
2381:
2378:
2375:
2372:
2369:
2349:
2346:
2343:
2340:
2337:
2334:
2314:
2311:
2308:
2305:
2302:
2299:
2273:
2270:
2267:
2264:
2258:
2255:
2247:
2243:
2239:
2236:
2233:
2230:
2227:
2224:
2221:
2218:
2215:
2212:
2209:
2206:
2203:
2200:
2195:
2191:
2187:
2184:
2181:
2178:
2175:
2172:
2169:
2166:
2163:
2157:
2154:
2147:
2144:
2141:
2138:
2135:
2132:
2129:
2126:
2123:
2120:
2117:
2112:
2108:
2104:
2101:
2098:
2095:
2092:
2089:
2086:
2083:
2080:
2074:
2071:
2048:
2044:
2038:
2034:
2030:
2027:
2024:
2021:
2018:
2015:
2012:
2009:
2006:
2003:
2000:
1997:
1994:
1991:
1988:
1985:
1981:
1975:
1972:
1967:
1964:
1961:
1958:
1955:
1952:
1949:
1945:
1941:
1935:
1931:
1927:
1924:
1921:
1918:
1915:
1912:
1909:
1906:
1903:
1900:
1897:
1894:
1891:
1888:
1885:
1882:
1878:
1872:
1869:
1864:
1861:
1858:
1855:
1852:
1849:
1846:
1826:
1823:
1820:
1817:
1814:
1811:
1791:
1788:
1785:
1782:
1779:
1776:
1753:
1733:
1730:
1727:
1724:
1704:
1701:
1698:
1678:
1675:
1672:
1669:
1647:
1642:
1637:
1634:
1614:
1611:
1608:
1605:
1602:
1599:
1596:
1593:
1590:
1587:
1584:
1581:
1578:
1553:
1531:
1526:
1521:
1516:
1513:
1510:
1507:
1503:
1500:
1497:
1494:
1491:
1488:
1485:
1482:
1479:
1466:
1463:
1436:
1406:
1385:
1382:
1354:
1332:
1329:
1326:
1321:
1297:
1273:
1266:
1262:
1257:
1226:
1185:
1180:
1176:
1172:
1167:
1145:
1140:
1136:
1132:
1127:
1103:
1078:
1075:
1072:
1067:
1033:
1011:
1008:
1005:
1000:
978:
975:
960:
955:
950:
945:
940:
918:
913:
909:
905:
900:
870:
848:
845:
840:
836:
832:
827:
822:
817:
810:
806:
801:
797:
794:
791:
788:
783:
770:fluid dynamics
755:
750:
745:
714:
711:
706:
702:
698:
693:
688:
685:
682:
679:
674:
671:
667:
661:
654:
650:
645:
641:
638:
632:
627:
622:
617:
614:
611:
608:
605:
602:
599:
596:
591:
565:
543:
538:
534:
530:
525:
501:
496:
493:
482:diffeomorphism
467:
460:
456:
451:
428:
423:
420:
398:
393:
390:
385:
381:
377:
372:
368:
364:
361:
358:
355:
333:
328:
323:
319:
298:
293:
289:
285:
280:
276:
272:
269:
266:
263:
260:
255:
251:
247:
242:
235:
231:
226:
205:
200:
196:
192:
187:
183:
179:
176:
171:
147:
122:
119:
117:
114:
72:
71:
31:
29:
22:
15:
9:
6:
4:
3:
2:
19685:
19674:
19671:
19669:
19666:
19664:
19661:
19659:
19656:
19654:
19651:
19650:
19648:
19637:
19633:
19629:
19625:
19620:
19615:
19611:
19607:
19603:
19599:
19594:
19590:
19586:
19582:
19578:
19574:
19570:
19566:
19562:
19558:
19553:
19552:
19547:
19546:
19545:
19539:
19535:
19507:
19503:
19499:
19495:
19489:
19485:
19481:
19477:
19473:
19466:
19459:
19451:
19447:
19440:
19432:
19425:
19417:
19413:
19406:
19398:
19391:
19383:
19376:
19368:
19364:
19357:
19348:
19343:
19339:
19335:
19331:
19327:
19323:
19316:
19308:
19304:
19300:
19296:
19292:
19288:
19285:(1): 017514.
19284:
19280:
19273:
19265:
19261:
19257:
19253:
19249:
19245:
19240:
19235:
19231:
19227:
19220:
19212:
19208:
19204:
19200:
19195:
19190:
19186:
19182:
19175:
19173:
19171:
19169:
19160:
19156:
19152:
19148:
19144:
19140:
19133:
19125:
19121:
19117:
19113:
19109:
19105:
19100:
19095:
19091:
19087:
19080:
19078:
19076:
19074:
19072:
19070:
19068:
19066:
19064:
19055:
19051:
19047:
19043:
19039:
19035:
19030:
19025:
19021:
19017:
19010:
19008:
19006:
18997:
18993:
18989:
18985:
18981:
18977:
18972:
18967:
18963:
18959:
18952:
18950:
18948:
18946:
18944:
18942:
18933:
18929:
18925:
18921:
18917:
18913:
18908:
18903:
18899:
18892:
18890:
18888:
18886:
18877:
18873:
18869:
18865:
18861:
18857:
18852:
18847:
18843:
18836:
18834:
18832:
18830:
18828:
18826:
18817:
18813:
18809:
18805:
18801:
18797:
18794:(1): 013128.
18793:
18789:
18782:
18773:
18768:
18764:
18760:
18756:
18752:
18748:
18741:
18739:
18730:
18726:
18722:
18718:
18714:
18710:
18703:
18701:
18692:
18686:
18682:
18678:
18674:
18667:
18659:
18655:
18651:
18647:
18643:
18639:
18632:
18624:
18620:
18616:
18612:
18608:
18604:
18601:(1): 017504.
18600:
18596:
18589:
18581:
18577:
18570:
18568:
18559:
18555:
18551:
18547:
18544:(6): 065404.
18543:
18539:
18532:
18525:
18523:
18521:
18512:
18508:
18504:
18500:
18496:
18492:
18488:
18481:
18479:
18477:
18475:
18473:
18464:
18460:
18456:
18450:
18446:
18442:
18437:
18432:
18428:
18421:
18412:
18407:
18403:
18399:
18395:
18391:
18387:
18380:
18372:
18368:
18364:
18360:
18356:
18352:
18345:
18343:
18334:
18330:
18326:
18322:
18318:
18314:
18310:
18306:
18299:
18291:
18287:
18282:
18277:
18273:
18269:
18265:
18261:
18254:
18246:
18242:
18238:
18234:
18230:
18226:
18222:
18218:
18211:
18203:
18199:
18195:
18191:
18187:
18183:
18176:
18168:
18164:
18160:
18154:
18150:
18146:
18141:
18136:
18133:. p. 1.
18132:
18125:
18117:
18113:
18108:
18103:
18099:
18095:
18091:
18087:
18084:(3): 033122.
18083:
18079:
18075:
18068:
18060:
18056:
18052:
18048:
18044:
18040:
18033:
18024:
18019:
18015:
18011:
18007:
18003:
17999:
17992:
17983:
17978:
17974:
17970:
17966:
17962:
17958:
17950:
17941:
17936:
17932:
17928:
17924:
17920:
17916:
17909:
17901:
17897:
17892:
17887:
17882:
17877:
17873:
17869:
17865:
17861:
17857:
17850:
17842:
17838:
17834:
17830:
17826:
17822:
17815:
17807:
17803:
17799:
17795:
17791:
17787:
17780:
17772:
17768:
17764:
17760:
17756:
17752:
17745:
17743:
17741:
17739:
17737:
17735:
17733:
17731:
17729:
17727:
17725:
17723:
17714:
17710:
17706:
17702:
17698:
17694:
17693:Physics Today
17687:
17679:
17675:
17671:
17667:
17663:
17659:
17652:
17650:
17648:
17646:
17644:
17642:
17640:
17638:
17633:
17623:
17620:
17618:
17615:
17613:
17610:
17608:
17605:
17603:
17600:
17598:
17595:
17594:
17585:
17581:
17578:
17574:
17571:
17568:
17564:
17561:
17557:
17554:
17550:
17547:
17543:
17542:
17541:
17540:calculation:
17539:
17524:
17520:
17504:
17500:
17477:
17473:
17447:
17443:
17434:
17430:
17426:
17418:
17414:
17405:
17401:
17390:
17372:
17368:
17360:
17356:
17351:
17343:
17342:metric tensor
17340:
17329:
17310:
17306:
17295:
17291:
17283:
17279:
17274:
17270:
17267:
17264:
17256:
17246:
17243:
17234:
17232:
17216:
17194:
17190:
17167:
17163:
17142:
17122:
17098:
17094:
17086:
17082:
17077:
17068:
17052:
17030:
17025:
17021:
17011:
16995:
16991:
16982:
16978:
16955:
16951:
16942:
16937:
16933:
16912:
16909:
16906:
16897:
16884:
16876:
16872:
16863:
16859:
16846:
16842:
16833:
16829:
16825:
16817:
16813:
16804:
16800:
16789:
16785:
16776:
16772:
16768:
16763:
16759:
16751:
16743:
16739:
16730:
16726:
16713:
16709:
16700:
16696:
16692:
16684:
16680:
16671:
16667:
16659:
16655:
16651:
16643:
16639:
16630:
16626:
16618:
16610:
16606:
16597:
16592:
16588:
16579:
16565:
16562:
16559:
16536:
16533:
16530:
16523:
16519:
16511:
16507:
16502:
16493:
16490:
16463:
16460:
16457:
16437:
16429:
16413:
16404:
16390:
16386:
16343:
16327:
16318:
16314:
16306:
16302:
16293:
16289:
16285:
16275:
16271:
16247:
16239:
16235:
16209:
16205:
16196:
16192:
16165:
16118:
16082:
16066:
16063:
16052:
16048:
16039:
16035:
16031:
16023:
16019:
16010:
16006:
16002:
15989:
15986:
15965:
15961:
15952:
15948:
15944:
15934:
15930:
15922:
15903:
15899:
15890:
15886:
15878:
15874:
15853:
15849:
15810:
15806:
15767:
15763:
15740:
15734:
15731:
15718:
15710:
15706:
15697:
15693:
15678:
15674:
15665:
15661:
15655:
15645:
15641:
15632:
15628:
15615:
15611:
15602:
15598:
15590:
15582:
15578:
15569:
15565:
15550:
15546:
15537:
15533:
15527:
15517:
15513:
15504:
15500:
15487:
15483:
15474:
15470:
15462:
15454:
15450:
15441:
15437:
15416:
15408:
15404:
15395:
15391:
15378:
15374:
15365:
15361:
15357:
15349:
15345:
15336:
15332:
15321:
15317:
15308:
15304:
15300:
15297:
15290:
15282:
15278:
15269:
15265:
15252:
15248:
15239:
15235:
15231:
15223:
15219:
15210:
15206:
15200:
15197:
15189:
15185:
15176:
15172:
15164:
15156:
15152:
15143:
15139:
15129:
15110:
15106:
15095:
15091:
15083:
15079:
15074:
15048:
15044:
15026:
15022:
15017:
14993:
14958:
14954:
14940:
14935:
14931:
14905:
14901:
14897:
14892:
14888:
14866:
14862:
14843:
14839:
14835:
14830:
14826:
14807:
14803:
14786:
14783:
14780:
14774:
14751:
14745:
14736:
14723:
14720:
14717:
14712:
14705:
14693:
14687:
14681:
14678:
14670:
14666:
14662:
14659:
14653:
14647:
14643:
14635:
14631:
14623:
14619:
14614:
14610:
14602:
14598:
14587:
14583:
14575:
14571:
14529:
14525:
14521:
14516:
14512:
14488:
14476:
14470:
14450:
14447:
14440:
14437:
14434:
14428:
14420:
14414:
14410:
14403:
14397:
14385:
14359:
14356:
14353:
14347:
14344:
14338:
14332:
14329:
14326:
14320:
14312:
14308:
14287:
14283:
14274:
14267:
14263:
14258:
14250:
14232:
14225:
14221:
14193:
14186:
14182:
14156:
14153:
14148:
14141:
14137:
14127:
14124:
14121:
14111:
14101:
14097:
14091:
14083:
14077:
14074:
14063:
14046:
14040:
14033:
14029:
14024:
14020:
14015:
14008:
14004:
13989:
13976:
13973:
13969:
13964:
13961:
13958:
13948:
13942:
13938:
13934:
13931:
13923:
13919:
13915:
13912:
13906:
13902:
13898:
13894:
13890:
13884:
13881:
13870:
13853:
13847:
13840:
13836:
13827:
13822:
13815:
13811:
13796:
13783:
13778:
13771:
13767:
13756:
13749:
13745:
13736:
13731:
13724:
13720:
13715:
13706:
13690:
13683:
13679:
13674:
13664:
13650:
13647:
13642:
13635:
13631:
13626:
13621:
13617:
13614:
13606:
13602:
13598:
13595:
13589:
13585:
13581:
13574:
13570:
13564:
13560:
13556:
13550:
13547:
13536:
13519:
13513:
13506:
13502:
13493:
13488:
13481:
13477:
13472:
13462:
13449:
13446:
13442:
13438:
13435:
13427:
13423:
13419:
13416:
13410:
13406:
13402:
13399:
13393:
13390:
13379:
13362:
13356:
13349:
13345:
13336:
13331:
13324:
13320:
13315:
13306:
13302:
13284:
13277:
13273:
13268:
13264:
13259:
13252:
13248:
13243:
13234:
13216:
13209:
13205:
13200:
13190:
13177:
13172:
13165:
13161:
13156:
13150:
13143:
13139:
13134:
13130:
13125:
13118:
13114:
13109:
13103:
13096:
13092:
13087:
13083:
13078:
13071:
13067:
13062:
13050:
13041:
13032:
13028:
13012:
13008:
12985:
12981:
12955:
12951:
12947:
12942:
12938:
12912:
12908:
12883:
12879:
12871:
12867:
12862:
12834:
12830:
12822:
12818:
12813:
12797:
12781:
12774:
12770:
12765:
12742:
12738:
12728:
12710:
12706:
12699:
12694:
12688:
12684:
12676:
12672:
12664:
12660:
12655:
12648:
12643:
12639:
12634:
12630:
12625:
12622:
12617:
12612:
12605:
12601:
12596:
12592:
12569:
12564:
12560:
12556:
12552:
12539:
12521:
12518:
12515:
12511:
12486:
12483:
12480:
12477:
12473:
12465:
12461:
12455:
12452:
12449:
12445:
12441:
12435:
12429:
12425:
12417:
12413:
12405:
12401:
12396:
12389:
12384:
12380:
12375:
12371:
12367:
12361:
12357:
12349:
12345:
12337:
12333:
12328:
12321:
12316:
12312:
12307:
12300:
12298:
12291:
12284:
12280:
12275:
12271:
12268:
12261:
12257:
12253:
12250:
12242:
12238:
12232:
12226:
12222:
12214:
12210:
12202:
12198:
12193:
12186:
12181:
12177:
12172:
12164:
12159:
12156:
12153:
12149:
12144:
12138:
12135:
12130:
12128:
12121:
12114:
12110:
12105:
12101:
12098:
12086:
12068:
12064:
12056:
12052:
12047:
12037:
12024:
12020:
12014:
12007:
12003:
11998:
11994:
11991:
11987:
11983:
11978:
11975:
11971:
11966:
11960:
11953:
11949:
11944:
11940:
11937:
11933:
11912:
11909:
11905:
11900:
11894:
11887:
11883:
11878:
11874:
11871:
11867:
11846:
11843:
11839:
11835:
11830:
11823:
11819:
11814:
11805:
11802:
11785:
11779:
11776:
11773:
11765:
11762:
11754:
11751:
11748:
11742:
11736:
11733:
11730:
11723:
11715:
11711:
11700:
11696:
11688:
11684:
11676:
11672:
11667:
11660:
11655:
11651:
11639:
11634:
11630:
11627:
11623:
11618:
11616:
11607:
11603:
11595:
11591:
11586:
11582:
11579:
11572:
11569:
11563:
11560:
11555:
11552:
11549:
11545:
11537:
11533:
11522:
11518:
11510:
11506:
11498:
11494:
11489:
11482:
11477:
11473:
11463:
11461:
11452:
11448:
11440:
11436:
11431:
11427:
11424:
11412:
11394:
11390:
11382:
11378:
11373:
11352:
11349:
11327:
11323:
11298:
11294:
11286:
11282:
11277:
11251:
11247:
11236:
11232:
11224:
11220:
11215:
11207:
11199:
11194:
11186:
11182:
11164:
11160:
11152:
11148:
11143:
11118:
11114:
11106:
11102:
11097:
11072:
11068:
11060:
11056:
11051:
11030:
11023:
11019:
11011:
11007:
11002:
10994:
10990:
10982:
10978:
10973:
10969:
10962:
10958:
10950:
10946:
10941:
10933:
10929:
10921:
10917:
10912:
10908:
10901:
10897:
10889:
10885:
10880:
10871:
10859:
10855:
10847:
10843:
10838:
10828:
10821:
10817:
10809:
10805:
10800:
10790:
10788:
10784:
10764:
10760:
10752:
10748:
10743:
10739:
10732:
10728:
10720:
10716:
10711:
10702:
10682:
10678:
10670:
10666:
10661:
10640:
10633:
10629:
10621:
10617:
10612:
10604:
10600:
10592:
10588:
10583:
10579:
10572:
10568:
10560:
10556:
10551:
10543:
10539:
10531:
10527:
10522:
10518:
10511:
10507:
10499:
10495:
10490:
10478:
10476:
10471:
10452:
10448:
10444:
10439:
10435:
10423:
10413:
10411:
10407:
10399:Elliptic LCSs
10396:
10394:
10389:
10369:
10365:
10356:
10352:
10326:
10322:
10313:
10309:
10305:
10295:
10291:
10282:
10261:
10257:
10248:
10244:
10218:
10214:
10205:
10201:
10197:
10187:
10183:
10174:
10153:
10149:
10140:
10136:
10126:
10113:
10108:
10102:
10097:
10090:
10087:
10082:
10076:
10071:
10064:
10060:
10051:
10047:
10036:
10032:
10024:
10020:
10015:
10008:
9997:
9993:
9982:
9978:
9970:
9966:
9961:
9956:
9950:
9947:
9942:
9934:
9930:
9919:
9915:
9907:
9903:
9898:
9889:
9871:
9867:
9859:
9855:
9850:
9841:
9837:
9832:
9830:
9826:
9825:Elliptic LCSs
9822:
9818:
9799:
9766:
9733:
9715:
9696:
9663:
9631:
9624:
9620:
9615:
9600:
9558:
9553:
9540:
9531:
9527:
9519:
9515:
9506:
9502:
9498:
9488:
9484:
9475:
9458:
9450:
9446:
9420:
9416:
9407:
9403:
9376:
9329:
9278:
9274:
9265:
9261:
9235:
9231:
9222:
9218:
9214:
9204:
9200:
9190:
9186:
9167:
9163:
9154:
9150:
9124:
9120:
9111:
9107:
9092:
9076:
9073:
9069:
9060:
9056:
9047:
9043:
9039:
9031:
9027:
9018:
9014:
9010:
9003:
8995:
8992:
8971:
8967:
8958:
8954:
8950:
8940:
8936:
8928:
8909:
8905:
8896:
8892:
8884:
8880:
8876:
8860:
8857:
8853:
8844:
8840:
8831:
8827:
8823:
8815:
8811:
8802:
8798:
8794:
8787:
8779:
8776:
8775:stretch lines
8755:
8751:
8742:
8738:
8734:
8724:
8720:
8712:
8693:
8689:
8680:
8676:
8668:
8664:
8643:
8639:
8600:
8596:
8563:
8560:
8557:
8554:
8551:
8526:
8522:
8499:
8493:
8491:
8485:
8483:
8465:
8461:
8435:
8431:
8427:
8422:
8418:
8407:
8403:
8395:
8391:
8386:
8362:
8327:
8323:
8319:
8314:
8310:
8298:
8279:
8262:signals that
8249:
8246:
8238:
8234:
8230:
8225:
8221:
8210:
8206:
8198:
8194:
8189:
8181:. Similarly,
8163:
8159:
8155:
8150:
8146:
8119:
8089:
8086:
8078:
8074:
8070:
8065:
8061:
8050:
8046:
8038:
8034:
8029:
8015:
8011:
7992:
7988:
7984:
7979:
7975:
7964:
7960:
7952:
7948:
7943:
7917:
7913:
7907:
7904:
7900:
7889:
7885:
7877:
7873:
7868:
7842:
7838:
7802:
7798:
7787:
7783:
7775:
7771:
7766:
7755:normal under
7740:
7736:
7710:
7706:
7695:
7691:
7683:
7679:
7674:
7645:
7641:
7623:
7619:
7614:
7605:
7604:tangent space
7584:
7580:
7562:
7558:
7553:
7545:
7544:tangent space
7524:
7520:
7487:
7483:
7460:
7456:
7430:
7426:
7422:
7417:
7413:
7392:
7389:
7386:
7382:
7379:
7363:
7340:
7337:
7332:
7328:
7324:
7321:
7318:
7313:
7309:
7297:
7294:
7293:
7292:
7289:
7271:
7268:
7263:
7259:
7255:
7252:
7249:
7244:
7240:
7214:
7211:
7206:
7202:
7196:
7193:
7188:
7184:
7147:
7144:
7139:
7135:
7111:
7108:
7103:
7099:
7095:
7092:
7089:
7084:
7080:
7051:
7047:
7043:
7038:
7034:
7022:
7006:
6981:
6977:
6968:
6965:
6960:
6956:
6950:
6947:
6942:
6938:
6898:
6895:
6890:
6886:
6882:
6879:
6876:
6871:
6867:
6844:
6840:
6826:
6823:
6820:
6798:
6794:
6771:
6767:
6753:
6749:
6736:
6731:
6722:
6716:
6712:
6708:
6704:
6694:
6690:
6686:
6681:
6677:
6673:
6668:
6664:
6660:
6657:
6649:
6645:
6641:
6633:
6629:
6625:
6620:
6616:
6612:
6607:
6603:
6599:
6596:
6588:
6584:
6572:
6566:
6562:
6558:
6554:
6544:
6540:
6536:
6531:
6527:
6523:
6518:
6514:
6510:
6507:
6499:
6495:
6491:
6483:
6479:
6475:
6470:
6466:
6462:
6457:
6453:
6449:
6446:
6438:
6434:
6422:
6416:
6412:
6408:
6404:
6394:
6390:
6386:
6381:
6377:
6373:
6368:
6364:
6360:
6357:
6349:
6345:
6341:
6333:
6329:
6325:
6320:
6316:
6312:
6307:
6303:
6299:
6296:
6288:
6284:
6270:
6264:
6260:
6256:
6252:
6242:
6238:
6234:
6229:
6225:
6221:
6216:
6212:
6208:
6205:
6197:
6193:
6189:
6181:
6177:
6173:
6168:
6164:
6160:
6155:
6151:
6147:
6144:
6136:
6132:
6120:
6114:
6110:
6106:
6102:
6092:
6088:
6084:
6079:
6075:
6071:
6066:
6062:
6058:
6055:
6047:
6043:
6039:
6031:
6027:
6023:
6018:
6014:
6010:
6005:
6001:
5997:
5994:
5986:
5982:
5970:
5964:
5960:
5956:
5952:
5942:
5938:
5934:
5929:
5925:
5921:
5916:
5912:
5908:
5905:
5897:
5893:
5889:
5881:
5877:
5873:
5868:
5864:
5860:
5855:
5851:
5847:
5844:
5836:
5832:
5818:
5812:
5808:
5804:
5800:
5790:
5786:
5782:
5777:
5773:
5769:
5764:
5760:
5756:
5753:
5745:
5741:
5737:
5729:
5725:
5721:
5716:
5712:
5708:
5703:
5699:
5695:
5692:
5684:
5680:
5668:
5662:
5658:
5654:
5650:
5640:
5636:
5632:
5627:
5623:
5619:
5614:
5610:
5606:
5603:
5595:
5591:
5587:
5579:
5575:
5571:
5566:
5562:
5558:
5553:
5549:
5545:
5542:
5534:
5530:
5518:
5512:
5508:
5504:
5500:
5490:
5486:
5482:
5477:
5473:
5469:
5464:
5460:
5456:
5453:
5445:
5441:
5437:
5429:
5425:
5421:
5416:
5412:
5408:
5403:
5399:
5395:
5392:
5384:
5380:
5370:
5365:
5357:
5353:
5344:
5337:
5333:
5328:
5299:
5295:
5291:
5286:
5282:
5278:
5275:
5269:
5244:
5240:
5236:
5231:
5227:
5223:
5218:
5214:
5207:
5204:
5182:
5178:
5152:
5148:
5144:
5139:
5135:
5131:
5128:
5122:
5097:
5093:
5084:
5077:
5073:
5068:
5056:
5051:
5033:
5029:
5021:
5017:
4978:
4974:
4948:
4944:
4933:
4929:
4921:
4917:
4878:
4874:
4865:
4864:
4854:
4850:
4837:
4829:
4825:
4816:
4812:
4808:
4805:
4794:
4790:
4786:
4781:
4777:
4770:
4766:
4761:
4753:
4749:
4738:
4734:
4726:
4722:
4697:
4695:
4674:
4670:
4666:
4661:
4657:
4649:
4637:
4633:
4625:
4621:
4616:
4611:
4608:
4578:
4574:
4565:
4561:
4555:
4547:
4543:
4532:
4528:
4520:
4516:
4511:
4488:
4484:
4475:
4455:
4451:
4443:
4439:
4434:
4425:
4420:
4412:
4408:
4400:
4396:
4391:
4383:
4378:
4371:
4367:
4359:
4355:
4350:
4340:
4320:
4311:
4307:
4300:
4292:
4288:
4277:
4273:
4265:
4261:
4256:
4252:
4244:
4240:
4233:
4229:
4221:
4218:
4214:
4205:
4201:
4194:
4190:
4181:
4179:
4168:
4159:
4155:
4148:
4140:
4136:
4125:
4121:
4113:
4109:
4104:
4097:
4089:
4085:
4078:
4070:
4066:
4055:
4051:
4043:
4039:
4034:
4026:
4018:
4015:
4011:
4002:
3998:
3991:
3987:
3978:
3976:
3967:
3958:
3954:
3950:
3945:
3941:
3932:
3928:
3923:
3917:
3914:
3910:
3901:
3897:
3890:
3886:
3875:
3872:
3865:
3859:
3851:
3849:
3839:
3835:
3824:
3820:
3812:
3808:
3803:
3790:
3774:
3770:
3744:
3740:
3732:
3728:
3720:
3716:
3705:
3701:
3693:
3689:
3684:
3677:
3669:
3665:
3661:
3656:
3652:
3643:
3638:
3611:
3607:
3603:
3598:
3594:
3590:
3587:
3581:
3559:
3527:
3523:
3516:
3496:
3493:
3490:
3487:
3484:
3462:
3458:
3432:
3428:
3420:
3416:
3394:
3387:
3383:
3378:
3349:
3345:
3341:
3336:
3332:
3328:
3325:
3319:
3296:
3289:
3279:
3260:
3256:
3220:
3216:
3180:
3176:
3151:
3149:
3145:
3141:
3137:
3136:repelling LCS
3114:
3100:
3096:
3087:
3078:
3064:
3044:
3024:
3001:
2995:
2992:
2986:
2980:
2974:
2968:
2965:
2959:
2953:
2930:
2924:
2921:
2918:
2912:
2906:
2903:
2900:
2880:
2860:
2852:
2847:
2843:
2833:
2829:
2810:
2786:
2783:
2775:
2767:
2759:
2754:
2746:
2733:
2730:
2725:
2722:
2714:
2709:
2696:
2693:
2688:
2681:
2678:
2674:
2671:
2668:
2662:
2659:
2655:
2652:
2649:
2646:
2643:
2635:
2632:
2628:
2625:
2622:
2619:
2613:
2610:
2606:
2603:
2597:
2592:
2586:
2583:
2580:
2574:
2571:
2565:
2562:
2551:
2534:
2531:
2528:
2522:
2500:
2493:
2489:
2484:
2457:
2454:
2451:
2444:
2420:
2417:
2414:
2408:
2396:
2379:
2376:
2373:
2367:
2344:
2341:
2338:
2332:
2309:
2306:
2303:
2297:
2289:
2284:
2271:
2265:
2256:
2253:
2245:
2237:
2231:
2228:
2222:
2216:
2210:
2207:
2204:
2198:
2193:
2185:
2179:
2176:
2170:
2167:
2164:
2152:
2145:
2139:
2133:
2127:
2124:
2121:
2115:
2110:
2102:
2096:
2093:
2087:
2084:
2081:
2069:
2046:
2042:
2036:
2025:
2022:
2019:
2013:
2004:
1998:
1995:
1992:
1986:
1979:
1973:
1970:
1965:
1959:
1956:
1953:
1947:
1943:
1939:
1933:
1922:
1919:
1916:
1910:
1901:
1895:
1892:
1889:
1883:
1876:
1870:
1867:
1862:
1856:
1853:
1850:
1844:
1821:
1818:
1815:
1809:
1786:
1783:
1780:
1774:
1767:
1751:
1728:
1722:
1702:
1699:
1696:
1673:
1667:
1645:
1635:
1632:
1612:
1606:
1600:
1597:
1594:
1588:
1582:
1579:
1576:
1568:
1551:
1544:the open set
1542:
1529:
1524:
1514:
1511:
1508:
1505:
1501:
1495:
1492:
1489:
1483:
1480:
1477:
1457:
1453:
1451:
1434:
1426:
1422:
1395:
1391:
1381:
1378:
1377:more strongly
1374:
1368:
1327:
1271:
1264:
1260:
1255:
1246:
1242:
1214:
1209:
1207:
1203:
1199:
1178:
1174:
1138:
1134:
1091:
1073:
1056:
1052:
1047:
1006:
983:
974:
953:
943:
911:
907:
888:
887:
838:
834:
815:
808:
804:
799:
795:
789:
771:
748:
734:
730:
725:
704:
700:
686:
680:
672:
669:
659:
652:
648:
643:
636:
625:
615:
609:
606:
603:
594:
579:
536:
532:
494:
491:
483:
465:
458:
454:
449:
421:
418:
411:for any time
391:
383:
379:
375:
370:
366:
362:
359:
353:
326:
321:
317:
291:
287:
283:
278:
274:
270:
267:
261:
253:
249:
245:
240:
233:
229:
224:
198:
194:
190:
185:
181:
174:
136:
127:
113:
110:
106:
102:
99:
95:
91:
87:
78:
68:
65:
57:
47:
43:
38:
36:
30:
21:
20:
19668:Chaos theory
19601:
19597:
19567:(1): 39–58.
19564:
19560:
19542:
19541:
19540:profile for
19537:
19506:the original
19471:
19458:
19450:the original
19439:
19424:
19416:the original
19405:
19390:
19375:
19367:the original
19356:
19329:
19325:
19315:
19282:
19278:
19272:
19229:
19225:
19219:
19187:(1): 69–89.
19184:
19180:
19145:(20): 1680.
19142:
19138:
19132:
19089:
19085:
19019:
19015:
18961:
18957:
18897:
18841:
18791:
18787:
18781:
18754:
18750:
18712:
18708:
18672:
18666:
18644:(18): 1475.
18641:
18637:
18631:
18598:
18594:
18588:
18580:the original
18541:
18537:
18494:
18490:
18426:
18420:
18393:
18389:
18379:
18354:
18350:
18308:
18304:
18298:
18263:
18259:
18253:
18220:
18216:
18210:
18185:
18181:
18175:
18130:
18124:
18081:
18077:
18067:
18042:
18038:
18032:
18005:
18001:
17991:
17967:(23): 6171.
17964:
17960:
17949:
17922:
17918:
17908:
17863:
17859:
17849:
17824:
17820:
17814:
17789:
17785:
17779:
17754:
17750:
17696:
17692:
17686:
17664:(3–4): 352.
17661:
17657:
17602:Chaos theory
17535:
17527:Hadjighasem.
17391:
17335:
17252:
17241:
17240:
17233:of Jupiter.
17066:
17012:
16898:
16580:
16479:
16341:
16088:
16080:
15984:
15732:
15130:
14876:
14813:
14737:
14310:
14306:
14248:
14064:
13990:
13871:
13797:
13707:
13665:
13537:
13463:
13380:
13191:
13051:
13047:
12803:
12729:
12087:
12038:
11806:
11803:
11413:
11205:
11203:
10791:
10479:
10472:
10422:elliptic LCS
10421:
10419:
10402:
10392:
10390:
10280:
10172:
10127:
9890:
9833:
9824:
9820:
9816:
9713:
9606:
9556:
9554:
9476:
9299:
9098:
9090:
8991:shrink lines
8990:
8874:
8774:
8486:
8481:
8296:
8020:
7401:
7384:
7377:
7290:
7020:
6854:
6758:
5052:
4861:
4859:
4698:
4472:denotes the
4341:
3791:
3280:
3157:
3139:
3135:
3094:
3092:
2873:-frame to a
2850:
2839:
2799:holds, with
2710:
2552:
2397:
2285:
1543:
1468:
1387:
1376:
1372:
1369:
1240:
1210:
1089:
1051:inequalities
1048:
988:
884:
726:
580:
132:
111:
107:
103:
94:trajectories
89:
85:
84:
60:
51:
32:
19604:: 111–120.
19412:"cuda_ftle"
19181:SIAM Review
19092:: 136–173.
18107:10919/24411
18045:: 230–239.
17925:(17): n/a.
17584:source code
17577:source code
17567:source code
17565:cuda_ftle (
17560:source code
17553:source code
17546:source code
15985:shear lines
9888:defined as
8666:Attracting
3509:, and with
3099:phase space
1837:defined as
1766:strain rate
1394:phase space
1373:exceptional
1241:exceptional
733:phase space
135:phase space
19663:Turbulence
19647:Categories
19332:(2): 753.
19099:1506.04061
19029:1510.05367
18971:1503.05970
18757:(4): 439.
18008:(6): n/a.
17628:References
17597:Turbulence
17339:Lorentzian
9821:Strainless
8882:Repelling
1450:autonomous
1425:autonomous
1421:autonomous
1388:Classical
1245:continuity
1206:attractors
1090:attracting
578:, the set
19614:CiteSeerX
19502:1612-3786
19264:119570289
19239:1308.2352
19194:1408.5594
19022:: 70–93.
18907:1308.6136
18851:1306.6497
18431:CiteSeerX
18276:CiteSeerX
18135:CiteSeerX
17792:: 47–60.
17699:(2): 41.
17431:λ
17402:λ
17217:λ
17143:λ
17123:λ
17053:λ
17031:±
17026:λ
17022:η
16983:±
16979:η
16943:±
16938:λ
16934:η
16907:λ
16860:ξ
16830:λ
16826:−
16801:λ
16773:λ
16769:−
16760:λ
16752:±
16727:ξ
16697:λ
16693:−
16668:λ
16656:λ
16652:−
16627:λ
16598:±
16593:λ
16589:η
16560:λ
16534:λ
16531:−
16458:λ
16438:λ
16414:λ
16372:Π
16352:Π
16323:Π
16315:×
16294:±
16281:′
16197:±
16170:Π
16145:Π
16123:Π
16098:Π
16061:⟩
16040:±
16011:±
16003:×
16000:∇
15997:⟨
15953:±
15949:η
15940:′
15891:±
15876:Elliptic
15694:ξ
15662:λ
15629:λ
15599:λ
15591:±
15566:ξ
15534:λ
15501:λ
15471:λ
15442:±
15392:ξ
15362:λ
15358:−
15333:λ
15305:λ
15301:−
15291:±
15266:ξ
15236:λ
15232:−
15207:λ
15198:−
15173:λ
15144:±
15140:η
15075:σ
14941:∈
14697:¯
14694:ω
14688:−
14648:ω
14615:∫
14429:ω
14411:∫
14389:¯
14386:ω
14345:×
14342:∇
14321:ω
14259:ψ
14217:Φ
14178:Φ
14154:β
14133:Φ
14115:¯
14088:Φ
14078:˙
14075:β
14041:β
14030:β
14000:Θ
13974:α
13952:¯
13943:−
13885:˙
13882:α
13848:α
13837:α
13832:∂
13807:Φ
13763:Θ
13741:Φ
13551:˙
13498:∇
13394:˙
13341:∇
13059:∇
12859:∇
12766:θ
12730:The time
12707:λ
12685:ξ
12652:∇
12640:ξ
12512:ϵ
12481:≠
12446:ϵ
12426:ξ
12393:∇
12381:ξ
12372:−
12358:ξ
12325:∇
12313:ξ
12276:θ
12272:
12251:−
12239:λ
12223:ξ
12190:∇
12178:ξ
12150:∑
12106:θ
12102:
11999:θ
11995:
11984:
11976:−
11945:θ
11941:
11910:π
11879:θ
11875:
11847:−
11815:θ
11712:λ
11706:⟩
11697:ξ
11664:∇
11652:ξ
11648:⟨
11628:−
11587:θ
11583:
11534:λ
11528:⟩
11519:ξ
11486:∇
11474:ξ
11470:⟨
11432:θ
11428:
11353:π
11216:θ
10877:∇
10835:∇
10487:∇
10353:λ
10310:ξ
10301:′
10245:λ
10202:ξ
10193:′
10137:ξ
10088:−
10069:Ω
10012:Ω
10009:−
10006:Ω
9800:ϵ
9767:ϵ
9734:ϵ
9697:ϵ
9664:ϵ
9587:Π
9567:Π
9536:Π
9528:×
9503:ξ
9494:′
9404:ξ
9381:Π
9356:Π
9334:Π
9309:Π
9262:λ
9219:ξ
9210:′
9151:λ
9108:λ
9044:ξ
9015:ξ
9011:×
9008:∇
8955:ξ
8946:′
8893:ξ
8828:ξ
8799:ξ
8795:×
8792:∇
8739:ξ
8730:′
8677:ξ
8387:ρ
8190:ρ
8030:ρ
7944:σ
7869:ρ
7763:∇
7671:∇
7385:incorrect
6824:×
6768:δ
6713:δ
6691:δ
6687:−
6642:−
6630:δ
6563:δ
6541:δ
6537:−
6492:−
6480:δ
6413:δ
6391:δ
6387:−
6342:−
6330:δ
6261:δ
6239:δ
6235:−
6190:−
6178:δ
6111:δ
6089:δ
6085:−
6040:−
6028:δ
5961:δ
5939:δ
5935:−
5890:−
5878:δ
5809:δ
5787:δ
5783:−
5738:−
5726:δ
5659:δ
5637:δ
5633:−
5588:−
5576:δ
5509:δ
5487:δ
5483:−
5438:−
5426:δ
5366:≈
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5065:∇
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3115:×
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2760:−
2675:
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2644:−
2629:
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2481:∇
2406:∇
2257:˙
2229:−
2156:~
2073:~
2011:∇
2005:−
1984:∇
1908:∇
1881:∇
1700:×
1636:∈
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1509:∈
954:×
944:∈
749:×
687:∈
670:−
637::
626:×
616:∈
495:∈
422:∈
392:∈
327:∈
259:↦
246::
54:June 2016
46:talk page
19589:11159109
19476:Springer
19446:"Newman"
19397:"FlowVC"
19307:20370304
19211:31876317
19124:44191318
19054:44073994
18996:44190280
18964:: 1–12.
18932:44141020
18876:44079483
18816:22463004
18623:20370294
18333:17501277
18245:12867087
18223:: 1–26.
18116:21974657
17900:22411824
17591:See also
17582:FlowTK (
17575:Newman (
17558:FlowVC (
17544:ManGen (
17255:trenches
16552:, where
15871:for n=3
15828:for n=2
15788:ODE for
15785:for n=3
13299:are the
12695:⟩
12635:⟨
12436:⟩
12376:⟨
12368:⟩
12308:⟨
12233:⟩
12173:⟨
11198:ABC flow
9070:⟩
9004:⟨
8854:⟩
8788:⟨
8661:for n=3
8618:for n=2
8578:ODE for
4503:is just
4321:⟩
4230:⟨
4169:⟩
4027:⟨
1200:theory,
19636:1074531
19606:Bibcode
19569:Bibcode
19534:Scholia
19431:"CTRAJ"
19334:Bibcode
19287:Bibcode
19244:Bibcode
19147:Bibcode
19104:Bibcode
19034:Bibcode
18976:Bibcode
18912:Bibcode
18856:Bibcode
18796:Bibcode
18759:Bibcode
18717:Bibcode
18646:Bibcode
18603:Bibcode
18546:Bibcode
18499:Bibcode
18463:7716670
18398:Bibcode
18359:Bibcode
18313:Bibcode
18268:Bibcode
18225:Bibcode
18190:Bibcode
18167:8190391
18086:Bibcode
18047:Bibcode
18010:Bibcode
17969:Bibcode
17927:Bibcode
17891:3323984
17868:Bibcode
17829:Bibcode
17794:Bibcode
17759:Bibcode
17701:Bibcode
17666:Bibcode
13231:is the
12900:in the
12536:is the
9842:tensor
4696:(FTLE)
3477:, with
19634:
19616:
19587:
19536:has a
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17888:
12503:where
7475:, let
7021:define
4863:ridges
4342:where
3409:. Let
2840:Since
1625:where
1419:of an
727:is an
19632:S2CID
19585:S2CID
19538:topic
19509:(PDF)
19468:(PDF)
19260:S2CID
19234:arXiv
19207:S2CID
19189:arXiv
19120:S2CID
19094:arXiv
19050:S2CID
19024:arXiv
18992:S2CID
18966:arXiv
18928:S2CID
18902:arXiv
18872:S2CID
18846:arXiv
18534:(PDF)
18459:S2CID
18241:S2CID
18163:S2CID
17572:CTRAJ
14738:with
9838:of a
1286:over
883:as a
480:is a
133:On a
96:in a
19498:ISSN
19488:ISBN
19303:PMID
18812:PMID
18685:ISBN
18619:PMID
18449:ISBN
18329:PMID
18153:ISBN
18112:PMID
17896:PMID
17492:and
17182:and
16563:>
15742:LCS
14311:LAVD
13464:and
13303:and
13000:and
10785:and
8544:for
8501:LCS
8247:<
8087:>
3488:<
2849:for
2784:<
2290:for
90:LCSs
19624:doi
19602:572
19577:doi
19480:doi
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19295:doi
19252:doi
19230:731
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18264:149
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9823:or
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8021:If
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6896:+
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6864:[
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6795:x
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6737:,
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6661:;
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6655:(
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6613:,
6608:0
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6600:;
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6594:(
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6555:|
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6532:0
6528:x
6524:,
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6511:;
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6505:(
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6489:)
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6476:+
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6463:,
6458:0
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6444:(
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6355:(
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6142:(
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5992:(
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5983:x
5971:|
5965:1
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5922:,
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5833:x
5819:|
5813:3
5805:2
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5770:,
5765:0
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5713:x
5709:,
5704:0
5700:t
5696:;
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5690:(
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5669:|
5663:2
5655:2
5651:|
5646:)
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5628:0
5624:x
5620:,
5615:0
5611:t
5607:;
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5601:(
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5592:x
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5572:+
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5563:x
5559:,
5554:0
5550:t
5546:;
5543:t
5540:(
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5531:x
5519:|
5513:1
5505:2
5501:|
5496:)
5491:1
5478:0
5474:x
5470:,
5465:0
5461:t
5457:;
5454:t
5451:(
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5442:x
5435:)
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5422:+
5417:0
5413:x
5409:,
5404:0
5400:t
5396:;
5393:t
5390:(
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5381:x
5371:(
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5358:0
5354:x
5350:(
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5338:0
5334:t
5329:F
5305:)
5300:0
5296:x
5292:,
5287:0
5283:t
5279:;
5276:t
5273:(
5270:x
5250:)
5245:3
5241:x
5237:,
5232:2
5228:x
5224:,
5219:1
5215:x
5211:(
5208:=
5205:x
5183:0
5179:x
5158:)
5153:0
5149:x
5145:,
5140:0
5136:t
5132:;
5129:t
5126:(
5123:x
5103:)
5098:0
5094:x
5090:(
5085:t
5078:0
5074:t
5069:F
5034:0
5030:t
5022:1
5018:t
5012:E
5009:L
5006:T
5003:F
4979:1
4975:t
4954:)
4949:0
4945:x
4941:(
4934:1
4930:t
4922:0
4918:t
4912:E
4909:L
4906:T
4903:F
4879:0
4875:t
4838:.
4835:)
4830:0
4826:x
4822:(
4817:n
4800:)
4795:0
4791:t
4782:1
4778:t
4774:(
4771:2
4767:1
4762:=
4759:)
4754:0
4750:x
4746:(
4739:1
4735:t
4727:0
4723:t
4717:E
4714:L
4711:T
4708:F
4680:)
4675:0
4671:t
4662:1
4658:t
4654:(
4650:/
4646:)
4638:1
4634:t
4626:0
4622:t
4606:(
4584:)
4579:0
4575:x
4571:(
4566:n
4556:=
4553:)
4548:0
4544:x
4540:(
4533:1
4529:t
4521:0
4517:t
4489:0
4485:x
4456:1
4452:t
4444:0
4440:t
4435:F
4426:T
4421:]
4413:1
4409:t
4401:0
4397:t
4392:F
4384:[
4379:=
4372:1
4368:t
4360:0
4356:t
4351:C
4317:)
4312:0
4308:t
4304:(
4298:)
4293:0
4289:x
4285:(
4278:1
4274:t
4266:0
4262:t
4257:C
4253:,
4250:)
4245:0
4241:t
4237:(
4222:1
4219:=
4215:|
4211:)
4206:0
4202:t
4198:(
4191:|
4182:=
4165:)
4160:0
4156:t
4152:(
4146:)
4141:0
4137:x
4133:(
4126:1
4122:t
4114:0
4110:t
4105:F
4098:,
4095:)
4090:0
4086:t
4082:(
4076:)
4071:0
4067:x
4063:(
4056:1
4052:t
4044:0
4040:t
4035:F
4019:1
4016:=
4012:|
4008:)
4003:0
3999:t
3995:(
3988:|
3979:=
3968:|
3964:)
3959:0
3955:x
3951:;
3946:1
3942:t
3938:(
3924:|
3918:1
3915:=
3911:|
3907:)
3902:0
3898:t
3894:(
3887:|
3873:1
3866:0
3852:=
3845:)
3840:0
3836:x
3832:(
3825:1
3821:t
3813:0
3809:t
3775:0
3771:x
3750:)
3745:0
3741:t
3737:(
3726:)
3721:0
3717:x
3713:(
3706:1
3702:t
3694:0
3690:t
3685:F
3678:=
3675:)
3670:0
3666:x
3662:;
3657:1
3653:t
3649:(
3617:)
3612:0
3608:x
3604:,
3599:0
3595:t
3591:,
3588:t
3585:(
3582:x
3560:n
3555:R
3533:)
3528:0
3524:t
3520:(
3497:1
3485:0
3463:0
3459:x
3438:)
3433:0
3429:t
3425:(
3395:t
3388:0
3384:t
3379:F
3355:)
3350:0
3346:x
3342:,
3337:0
3333:t
3329:,
3326:t
3323:(
3320:x
3300:)
3297:t
3294:(
3266:)
3261:0
3257:t
3253:(
3248:M
3226:)
3221:0
3217:t
3213:(
3208:M
3186:)
3181:0
3177:t
3173:(
3168:M
3120:I
3110:P
3065:y
3045:y
3025:x
3005:)
3002:t
2999:(
2996:b
2993:+
2990:)
2987:t
2984:(
2981:y
2978:)
2975:t
2972:(
2969:Q
2966:=
2963:)
2960:t
2957:(
2954:x
2934:)
2931:t
2928:(
2925:b
2922:+
2919:y
2916:)
2913:t
2910:(
2907:Q
2904:=
2901:x
2881:y
2861:x
2815:|
2807:|
2787:0
2781:)
2776:2
2771:|
2768:W
2765:|
2755:2
2750:|
2747:S
2744:|
2739:(
2734:2
2731:1
2726:=
2723:q
2697:,
2694:x
2689:)
2682:t
2679:4
2663:t
2660:4
2650:+
2647:2
2636:t
2633:4
2623:+
2620:2
2614:t
2611:4
2598:(
2593:=
2590:)
2587:t
2584:,
2581:x
2578:(
2575:v
2572:=
2563:x
2538:)
2535:t
2532:,
2529:x
2526:(
2523:v
2501:t
2494:0
2490:t
2485:F
2461:)
2458:t
2455:,
2452:y
2449:(
2445:W
2424:)
2421:t
2418:,
2415:x
2412:(
2409:v
2383:)
2380:t
2377:,
2374:x
2371:(
2368:W
2348:)
2345:t
2342:,
2339:x
2336:(
2333:S
2313:)
2310:t
2307:,
2304:x
2301:(
2298:S
2272:.
2269:)
2266:t
2263:(
2254:Q
2246:T
2242:)
2238:t
2235:(
2232:Q
2226:)
2223:t
2220:(
2217:Q
2214:)
2211:t
2208:,
2205:x
2202:(
2199:S
2194:T
2190:)
2186:t
2183:(
2180:Q
2177:=
2174:)
2171:t
2168:,
2165:y
2162:(
2153:W
2146:,
2143:)
2140:t
2137:(
2134:Q
2131:)
2128:t
2125:,
2122:x
2119:(
2116:S
2111:T
2107:)
2103:t
2100:(
2097:Q
2094:=
2091:)
2088:t
2085:,
2082:y
2079:(
2070:S
2047:,
2043:)
2037:T
2033:)
2029:)
2026:t
2023:,
2020:x
2017:(
2014:v
2008:(
2002:)
1999:t
1996:,
1993:x
1990:(
1987:v
1980:(
1974:2
1971:1
1966:=
1963:)
1960:t
1957:,
1954:x
1951:(
1948:W
1944:,
1940:)
1934:T
1930:)
1926:)
1923:t
1920:,
1917:x
1914:(
1911:v
1905:(
1902:+
1899:)
1896:t
1893:,
1890:x
1887:(
1884:v
1877:(
1871:2
1868:1
1863:=
1860:)
1857:t
1854:,
1851:x
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