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Cycle index

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6077: 3392: 5638: 4452: 284:. Little is lost by working with permutation groups in such a setting, so in these applications, when a group is considered, it is a permutation representation of the group which will be worked with, and thus, a group action must be specified. Algebraists, on the other hand, are more interested in the groups themselves and would be more concerned with the 6072:{\displaystyle \sum \limits _{n\geq 1}y^{n}Z(S_{n})=\sum \limits _{n\geq 1}\sum _{j_{1}+2j_{2}+3j_{3}+\cdots +nj_{n}=n}\prod _{k=1}^{n}{\frac {a_{k}^{j_{k}}y^{kj_{k}}}{k^{j_{k}}j_{k}!}}=\prod \limits _{k\geq 1}\sum \limits _{j_{k}\geq 0}{\frac {(a_{k}y^{k})^{j_{k}}}{k^{j_{k}}j_{k}!}}=\prod \limits _{k\geq 1}\exp \left({\frac {a_{k}y^{k}}{k}}\right),} 6326: 5587: 6851: 4745: 3631:
These edge rotations rotate about the axis that passes through the midpoints of opposite edges not incident on the same face and parallel to each other and exchanges the two faces that are incident on the first edge, the two faces incident on the second edge, and the two faces that share two vertices
415:
is to be read as: each element is sent to the element on its right, but the last element is sent to the first one (it "cycles" to the beginning). With cycle notation, it does not matter where a cycle starts, so (1 2 3 4 5) and (3 4 5 1 2) and (5 1 2 3 4) all represent the same permutation. The
4186: 5070: 3045:
Eight permutations that fix one vertex and produce a three-cycle for the three vertices not fixed: These permutations create two three-cycles of edges, one containing those not incident on the vertex, and another one containing those incident on the vertex; the contribution is
558: 6115: 5342: 3857: 580:) variables in the following way: a variable is needed for each distinct cycle length of the cycles that appear in the cycle decomposition of the permutation. In the previous example there were three different cycle lengths, so we will use three variables, 390: 7569:
The cycle index is a polynomial in several variables and the above results show that certain evaluations of this polynomial give combinatorially significant results. As polynomials they may also be formally added, subtracted, differentiated and
3381: 6575: 2989:
Six permutations that exchange two vertices: These permutations preserve the edge that connects the two vertices as well as the edge that connects the two vertices not exchanged. The remaining edges form two two-cycles and the contribution is
4478: 1008: 1824: 2528: 2019:
As the above example shows, the cycle index depends on the group action and not on the abstract group. Since there are many permutation representations of an abstract group, it is useful to have some terminology to distinguish them.
5227: 2007: 1295: 2268: 3583:
This time we rotate about the axis passing through two opposite vertices (the endpoints of a main diagonal). This creates two three-cycles of faces (the faces incident on the same vertex form a cycle). The contribution is
1505: 2829: 7317: 4447:{\displaystyle Z(D_{n})={\frac {1}{2}}Z(C_{n})+{\begin{cases}{\frac {1}{2}}a_{1}a_{2}^{(n-1)/2},&n{\mbox{ odd, }}\\{\frac {1}{4}}\left(a_{1}^{2}a_{2}^{(n-2)/2}+a_{2}^{n/2}\right),&n{\mbox{ even.}}\end{cases}}} 4154: 6966: 1126: 4856: 7464: 6564: 2533:
Often, when an author does not wish to use the group action terminology, the permutation group involved is given a name which implies what the action is. The following three examples illustrate this point.
437: 3086:
Three permutations that exchange two vertex pairs at the same time: These permutations preserve the two edges that connect the two pairs. The remaining edges form two two-cycles and the contribution is
6422: 1321:. Its elements are completely determined by the images of just the corners of the square. By labeling these corners 1, 2, 3 and 4 (consecutively going clockwise, say) we can represent the elements of 6321:{\displaystyle {\begin{aligned}Z(S_{n})&=\prod \limits _{k\geq 1}\exp \left({\frac {a_{k}y^{k}}{k}}\right)\\&=\exp \left(\sum \limits _{k\geq 1}{\frac {a_{k}y^{k}}{k}}\right).\end{aligned}}} 2141: 7075: 4820: 6120: 3142:
Six permutations that cycle the vertices in a four-cycle: These permutations create a four-cycle of edges (those that lie on the cycle) and exchange the remaining two edges; the contribution is
5582:{\displaystyle {\frac {n!}{\prod _{k=1}^{n}(k!)^{j_{k}}}}\prod _{k=1}^{n}\left({\frac {k!}{k}}\right)^{j_{k}}\prod _{k=1}^{n}{\frac {1}{j_{k}!}}={\frac {n!}{\prod _{k=1}^{n}k^{j_{k}}j_{k}!}}.} 423:
Not all permutations are cyclic permutations, but every permutation can be written as a product of disjoint (having no common element) cycles in essentially one way. As a permutation may have
732: 3683: 2624:
in an axis passing through a vertex and the midpoint of the opposite edge: These fix one edge (the one not incident on the vertex) and exchange the remaining two; the contribution is
3572: 3138: 3041: 312: 3938: 3460:
We rotate about the axis passing through the centers of the face and the face opposing it. This will fix the face and the face opposing it and create a four-cycle of the faces
401:= {1, 2, 3, 4, 5} which sends 1 ↦ 2, 2 ↦ 3, 3 ↦ 4, 4 ↦ 5 and 5 ↦ 1. This can be read off from the columns of the notation. When the top row is understood to be the elements of 3510: 2904: 6846:{\displaystyle Z(S_{n})={\frac {1}{n!}}\sum _{g\in S_{n}}\prod _{k=1}^{n}a_{k}^{j_{k}(g)}={\frac {1}{n!}}\sum _{l=1}^{n}{n-1 \choose l-1}\;(l-1)!\;a_{l}\;(n-l)!\;Z(S_{n-l})} 6477: 3233: 3183: 2665: 4740:{\displaystyle Z(A_{n})=\sum _{j_{1}+2j_{2}+3j_{3}+\cdots +nj_{n}=n}{\frac {1+(-1)^{j_{2}+j_{4}+\cdots }}{\prod _{k=1}^{n}k^{j_{k}}j_{k}!}}\prod _{k=1}^{n}a_{k}^{j_{k}}.} 3668: 3620: 3082: 6371: 3449: 2985: 2616: 5334: 3521:
We rotate about the same axis as in the previous case, but now there is no four cycle of the faces parallel to the axis, but rather two two-cycles. The contribution is
2354:
states that every abstract group has a regular permutation representation given by the group acting on itself (as a set) by (right) multiplication. This is called the
891: 2700: 6107: 5261: 6976:
Throughout this section we will modify the notation for cycle indices slightly by explicitly including the names of the variables. Thus, for the permutation group
5296: 1693: 6503: 565:
This permutation is the product of three cycles, one of length two, one of length three, and a fixed point. The elements in these cycles are disjoint subsets of
5630: 5610: 2924: 2401: 5085: 1896: 1175: 2154: 1399: 2849:(vertex-edge dual) and hence the edge permutation group induced by the vertex permutation group is the same as the vertex permutation group, namely 2722: 7190: 4054: 7718:
There is a convention to not write the fixed points in the cycle notation for a permutation, but these must be represented in the cycle index.
6862: 5065:{\displaystyle Z(S_{n})=\sum _{j_{1}+2j_{2}+3j_{3}+\cdots +nj_{n}=n}{\frac {1}{\prod _{k=1}^{n}k^{j_{k}}j_{k}!}}\prod _{k=1}^{n}a_{k}^{j_{k}}} 3407:. It permutes the six faces of the cube. (We could also consider edge permutations or vertex permutations.) There are twenty-four symmetries. 1607:= {2,4}. These elements can be thought of as the sides and diagonals of the square or, in a completely different setting, as the edges of the 1023: 5232:
This formula is obtained by counting how many times a given permutation shape can occur. There are three steps: first partition the set of
405:
in an appropriate order, only the second row need be written. In this one-line notation, our example would be . This example is known as a
7346: 6508: 553:{\displaystyle \left({\begin{matrix}1&2&3&4&5&6\\2&1&3&5&6&4\end{matrix}}\right)=(12)(3)(456).} 7709:
This notation is common amongst geometers and combinatorialists. It is used instead of the more common g(x) for traditional reasons.
6384: 7562:(also known as the Not Burnside's lemma, but traditionally called Burnside's lemma) and the weighted version of the result is 1333:
consists of the four permutations (1 4 3 2), (1 3)(2 4), (1 2 3 4) and e = (1)(2)(3)(4) which represent the counter-clockwise
7847: 7789: 7667:
Up to the different ways one can write a cycle and the fact that disjoint cycles commute so they can be written in any order.
2047: 6988: 4761: 7976: 577: 668: 7886: 7868: 7829: 7807: 3852:{\displaystyle Z(C)={\frac {1}{24}}\left(a_{1}^{6}+6a_{1}^{2}a_{4}+3a_{1}^{2}a_{2}^{2}+8a_{3}^{2}+6a_{2}^{3}\right).} 7563: 2669:
Two rotations, one clockwise, the other counterclockwise: These create a cycle of three edges; the contribution is
2023:
When an abstract group is defined in terms of permutations, it is a permutation group and the group action is the
429:(elements that are unchanged by the permutation), these will be represented by cycles of length one. For example: 288:
of the group actions, which measure how much is lost in passing from the group to its permutation representation.
7326: 2867:). This is not the case for complete graphs on more than three vertices, since these have strictly more edges ( 2368:
in its regular representation contains the six permutations (one-line form of the permutation is given first):
7911: 7586: 385:{\displaystyle \left({\begin{matrix}1&2&3&4&5\\2&3&4&5&1\end{matrix}}\right)} 7581:
The question of what the cycle structure of a random permutation looks like is an important question in the
7170: 2557:
in the Euclidean plane. This permits us to use geometric language to describe the permutations involved as
3524: 3090: 2993: 2952:
The identity: This permutation maps all vertices (and hence, edges) to themselves and the contribution is
136: 7903: 4008: 3886: 261:. A given group can have many different permutation representations, corresponding to different actions. 2537: 235:), is a permutation group. The group homomorphism can be thought of as a means for permitting the group 2929: 253: 3467: 3376:{\displaystyle Z(G)={\frac {1}{24}}\left(a_{1}^{6}+9a_{1}^{2}a_{2}^{2}+8a_{3}^{2}+6a_{2}a_{4}\right).} 3202:
Rotation by 120 degrees about the axis passing through a vertex and the midpoint of the opposite face.
143:
operations on these polynomials and then interpreting the results combinatorially lies at the core of
2870: 425: 51: 4249: 6427: 2621: 3145: 2627: 3635: 3587: 3049: 1003:{\displaystyle 0\leq j_{k}(g)\leq \lfloor n/k\rfloor {\mbox{ and }}\sum _{k=1}^{n}k\,j_{k}(g)=n.} 762:, while the cycle index monomial of the permutation (1 2)(3 4)(5)(6 7 8 9)(10 11 12 13) would be 6334: 3419: 2955: 2586: 7971: 7582: 7575: 5305: 411:
because it "cycles" the numbers around, and a third notation for it would be (1 2 3 4 5). This
112:
of a permutation group is the average of the cycle index monomials of its elements. The phrase
3880:
This group contains one permutation that fixes every element (this must be a natural action).
2672: 2579:
in its natural action, given above) induces an edge permutation. These are the permutations:
1819:{\displaystyle Z(C_{4})={\frac {1}{4}}\left(a_{1}^{6}+a_{1}^{2}a_{2}^{2}+2a_{2}a_{4}\right).} 1310: 144: 7946: 7145: 6085: 5239: 3986: 3189: 2554: 272:(that is, a group action exists). In combinatorial applications the interest is in the set 172: 5270: 2523:{\displaystyle Z(C_{6})={\frac {1}{6}}\left(a_{1}^{6}+a_{2}^{3}+2a_{3}^{2}+2a_{6}\right).} 2323:) if the only permutation in the group that has fixed points is the identity permutation. 8: 7559: 6482: 3461: 2351: 1885: 228: 128: 3632:
but no edge with the two edges, i.e. there are three two-cycles and the contribution is
3199:
Reflection in the plane that contains one edge and the midpoint of the edge opposing it.
2934:
This is entirely analogous to the three-vertex case. These are the vertex permutations (
7818: 5615: 5595: 5302:. But we do not distinguish between cycles of the same size, i.e. they are permuted by 5222:{\displaystyle Z(S_{n})={\frac {B_{n}(0!\,a_{1},1!\,a_{2},\dots ,(n-1)!\,a_{n})}{n!}}.} 2909: 576:
The cycle structure of a permutation can be coded as an algebraic monomial in several (
407: 216: 66: 62: 7936: 7919: 3205:
Rotation by 180 degrees about the axis connecting the midpoints of two opposite edges.
7882: 7864: 7843: 7825: 7803: 7785: 4469: 794: 196: 124: 39: 32: 6331:
There is a useful recursive formula for the cycle index of the symmetric group. Set
2930:
The cycle index of the edge permutation group of the complete graph on four vertices
2002:{\displaystyle Z(C_{4})={\frac {1}{4}}\left(a_{1}^{16}+a_{2}^{8}+2a_{4}^{4}\right).} 1290:{\displaystyle Z(G)={\frac {1}{|G|}}\sum _{g\in G}\prod _{k=1}^{n}a_{k}^{j_{k}(g)}.} 92: 31:
in several variables which is structured in such a way that information about how a
7931: 4751: 4016: 1875: 816: 285: 7578:
provides combinatorial interpretations of the results of these formal operations.
1341:
permutation e is the only permutation with fixed points in this representation of
304:}. A permutation in this setting can be represented by a two-line notation. Thus, 5076: 4839: 4755: 3970: 2263:{\displaystyle Z(S_{3})={\frac {1}{6}}\left(a_{1}^{3}+3a_{1}a_{2}+2a_{3}\right).} 1318: 176: 7688:
Technically we are using the notion of equivalence of group actions, replacing
4173: 3209: 2339: 1608: 1500:{\displaystyle Z(C_{4})={\frac {1}{4}}\left(a_{1}^{4}+a_{2}^{2}+2a_{4}\right).} 212: 7965: 7641:
This notational style is frequently found in the computer science literature.
2824:{\displaystyle Z(G)={\frac {1}{6}}\left(a_{1}^{3}+3a_{1}a_{2}+2a_{3}\right).} 123:
Knowing the cycle index polynomial of a permutation group, one can enumerate
17: 5592:
The formula may be further simplified if we sum up cycle indices over every
7700:. For the purposes of exposition, it is better to slide over these details. 7312:{\displaystyle \sum _{k=0}^{n}f_{k}t^{k}=Z(G;1+t,1+t^{2},\ldots ,1+t^{n}),} 4177: 3957: 2327: 2024: 1350: 1338: 296:
Finite permutations are most often represented as group actions on the set
248: 132: 35: 2583:
The identity: No vertices are permuted, and no edges; the contribution is
1617:. Acting on this new set, the four group elements are now represented by ( 7856: 7784:(5th ed.), Upper Saddle River, NJ: Prentice Hall, pp. 541–575, 7692:
acting on the corners of the square by the permutation representation of
4149:{\displaystyle Z(C_{n})={\frac {1}{n}}\sum _{d|n}\varphi (d)a_{d}^{n/d}.} 43: 20: 7912:
Cycle indices of the set / multiset operator and the exponential formula
6961:{\displaystyle Z(S_{n})={\frac {1}{n}}\sum _{l=1}^{n}a_{l}\;Z(S_{n-l}).} 2846: 2842: 1121:{\displaystyle \prod _{c\in g}a_{|c|}=\prod _{k=1}^{n}a_{k}^{j_{k}(g)}} 140: 58: 28: 3386: 156: 7877:
van Lint, J.H.; Wilson, R.M. (1992), "35.Pólya theory of counting",
7459:{\displaystyle \sum _{k=0}^{n}F_{k}t^{k}/k!=Z(G;1+t,1,1,\ldots ,1).} 3391: 800:
is the average of the cycle index monomials of all the permutations
7571: 2558: 1334: 188: 74: 6559:{\displaystyle {\begin{matrix}{\frac {l!}{l}}=(l-1)!\end{matrix}}} 3192:. This yields the following description of the permutation types. 1391:
respectively. Thus, the cycle index of this permutation group is:
3993: 47: 7798:
Cameron, Peter J. (1994), "15. Enumeration under group action",
291: 7838:
Roberts, Fred S.; Tesman, Barry (2009), "8.5 The Cycle Index",
1314: 1862:) (in this case we would also have ordered pairs of the form ( 46:
and exponents. This compact way of storing information in an
7585:. An overview of the most important results may be found at 3188:
We may visualize the types of permutations geometrically as
7881:, Cambridge: Cambridge University Press, pp. 461–474, 7802:, Cambridge: Cambridge University Press, pp. 245–256, 4440: 3862: 3400: 6417:{\displaystyle {\begin{matrix}1\leq l\leq n.\end{matrix}}} 3981:
elements equally spaced around a circle. This group has φ(
1337:
by 90°, 180°, 270° and 360° respectively. Notice that the
7842:(2nd ed.), Boca Raton: CRC Press, pp. 472–479, 2709:
of edge permutations induced by vertex permutations from
4180:, but also includes reflections. In its natural action, 1888:
at each vertex). The cycle index in this case would be:
243:(using the permutations associated with the elements of 7920:"Cycle indices of linear, affine and projective groups" 280:
and knowing what structures might be left invariant by
150: 6513: 6505:
elements of the cycle and every such choice generates
6430: 6389: 4431: 4316: 3416:
There is one such permutation and its contribution is
2136:{\displaystyle S_{3}=\{e,(23),(12),(123),(132),(13)\}} 941: 446: 321: 7349: 7193: 6991: 6865: 6578: 6511: 6485: 6387: 6337: 6118: 6088: 6082:
thus giving a simplified form for the cycle index of
5641: 5618: 5598: 5345: 5308: 5273: 5242: 5088: 4859: 4764: 4481: 4189: 4057: 3889: 3686: 3638: 3590: 3527: 3470: 3422: 3236: 3148: 3093: 3052: 2996: 2958: 2912: 2873: 2725: 2675: 2630: 2589: 2404: 2157: 2050: 1899: 1696: 1402: 1178: 1026: 894: 834:
has a unique decomposition into disjoint cycles, say
671: 440: 315: 7152:
in these actions respectively. By convention we set
7070:{\displaystyle Z(G)=Z(G;a_{1},a_{2},\ldots ,a_{n}).} 4815:{\displaystyle {\frac {1}{|A_{n}|}}={\frac {2}{n!}}} 3673:
The conclusion is that the cycle index of the group
3403:
in three-space and its group of symmetries, call it
7944: 7917: 7904:
Pólya's enumeration theorem and the symbolic method
7863:(3rd ed.), New York: Wiley, pp. 365–371, 1359:, and this permutation representation of it is its 743:. The cycle index monomial of our example would be 7817: 7780:Brualdi, Richard A. (2010), "14. Pólya Counting", 7458: 7311: 7069: 6960: 6845: 6558: 6497: 6471: 6416: 6365: 6320: 6101: 6071: 5624: 5604: 5581: 5328: 5290: 5255: 5221: 5064: 4814: 4739: 4446: 4148: 3932: 3851: 3662: 3614: 3566: 3504: 3443: 3387:The cycle index of the face permutations of a cube 3375: 3177: 3132: 3076: 3035: 2979: 2941:in its natural action) and the edge permutations ( 2918: 2898: 2823: 2694: 2659: 2610: 2522: 2262: 2135: 2001: 1818: 1499: 1289: 1120: 1002: 726: 552: 384: 247:). Such a group homomorphism is formally called a 6762: 6733: 4011:, giving the number of natural numbers less than 2890: 2877: 1838:can also act on the ordered pairs of elements of 7963: 4472:in its natural action as a permutation group is 2561:of the triangle. Every permutation in the group 1519:also acts on the unordered pairs of elements of 727:{\displaystyle \prod _{k=1}^{n}a_{k}^{j_{k}(g)}} 7650:Cyclic permutations are functions and the term 5632:to keep track of the total size of the cycles: 4850:in its natural action is given by the formula: 1329:= {1,2,3,4}. The permutation representation of 7876: 7763: 7739: 3216:The cycle index of the edge permutation group 7837: 7815: 7727: 7676: 7605: 6463: 6434: 5075:that can be also stated in terms of complete 3464:to the axis of rotation. The contribution is 2948:acting on unordered pairs) that they induce: 292:Disjoint cycle representation of permutations 7800:Combinatorics:Topics, Techniques, Algorithms 2130: 2064: 937: 923: 7531:. The number of orbits of this action is Z( 6929: 6817: 6798: 6787: 6768: 1685:), and the cycle index of this action is: 653:in the cycle decomposition of permutation 104:is the number of cycles of π of size  7935: 5191: 5153: 5133: 2027:homomorphism. This is referred to as the 1842:in the same natural way. Any permutation 971: 7816:Dixon, John D.; Mortimer, Brian (1996), 3863:Cycle indices of some permutation groups 3390: 420:is the number of elements in the cycle. 7797: 7779: 7751: 7629: 7617: 4457: 2542:of the complete graph on three vertices 2041:in its natural action has the elements 1874:could be thought of as the arcs of the 251:and the image of the homomorphism is a 163:onto itself is called a permutation of 7964: 7855: 7608:, pg. 2, section 1.2 Symmetric groups 5236:labels into subsets, where there are 4825: 167:, and the set of all permutations of 135:. This is the main ingredient in the 4159: 3867: 3567:{\displaystyle 3a_{1}^{2}a_{2}^{2}.} 3133:{\displaystyle 3a_{1}^{2}a_{2}^{2}.} 3036:{\displaystyle 6a_{1}^{2}a_{2}^{2}.} 2546:We will identify the complete graph 2315:. A transitive permutation group is 649:) is the number of cycles of length 151:Permutation groups and group actions 7924:Linear Algebra and Its Applications 6262: 6166: 6008: 5904: 5888: 5691: 5643: 4023:. In the regular representation of 3933:{\displaystyle Z(E_{n})=a_{1}^{n}.} 3190:symmetries of a regular tetrahedron 2834:It happens that the complete graph 2014: 276:; for instance, counting things in 116:is also sometimes used in place of 95:of this partition: the exponent of 13: 6737: 6438: 3943: 3578:Eight 120-degree vertex rotations: 2881: 1523:in a natural way. Any permutation 139:. Performing formal algebraic and 14: 7988: 7951:Beiträge zur Elektronischen Musik 7895: 7106:-tuples of distinct elements of 5612:, while using an extra variable 3516:Three 180-degree face rotations: 3505:{\displaystyle 6a_{1}^{2}a_{4}.} 1363:. The cycle index monomials are 853:... . Let the length of a cycle 42:can be simply read off from the 7947:"Enumeration in Musical Theory" 7859:(1995), "9.3 The Cycle Index", 7757: 7745: 7733: 7721: 7712: 7327:exponential generating function 6971: 3969:is the group of rotations of a 2899:{\displaystyle {\binom {n}{2}}} 7703: 7682: 7670: 7661: 7644: 7635: 7623: 7611: 7599: 7450: 7408: 7303: 7241: 7094:also induces an action on the 7061: 7010: 7001: 6995: 6952: 6933: 6882: 6869: 6840: 6821: 6811: 6799: 6781: 6769: 6686: 6680: 6595: 6582: 6546: 6534: 6472:{\textstyle {n-1 \choose l-1}} 6354: 6341: 6247: 6234: 6162: 6149: 6139: 6126: 5953: 5929: 5684: 5671: 5388: 5378: 5267:. Every such subset generates 5202: 5185: 5173: 5124: 5105: 5092: 4876: 4863: 4787: 4772: 4600: 4590: 4498: 4485: 4378: 4366: 4294: 4282: 4238: 4225: 4206: 4193: 4117: 4111: 4099: 4074: 4061: 3906: 3893: 3696: 3690: 3626:Six 180-degree edge rotations: 3246: 3240: 2735: 2729: 2421: 2408: 2287:if for every pair of elements 2174: 2161: 2127: 2121: 2115: 2109: 2103: 2097: 2091: 2085: 2079: 2073: 1916: 1903: 1713: 1700: 1419: 1406: 1279: 1273: 1209: 1201: 1188: 1182: 1113: 1107: 1057: 1049: 988: 982: 917: 911: 719: 713: 601:(in general, use the variable 544: 538: 535: 529: 526: 520: 397:corresponds to a bijection on 1: 7937:10.1016/S0024-3795(96)00530-7 7773: 7754:, pg. 248, Proposition 15.3.1 7587:random permutation statistics 7558:This result follows from the 7519:induces an action on the set 7475:be a group acting on the set 7086:be a group acting on the set 6479:ways to choose the remaining 3455:Six 90-degree face rotations: 2705:The cycle index of the group 2330:transitive permutation group 2319:(or sometimes referred to as 877:) be the number of cycles of 784: 7945:Harald Fripertinger (1992). 7918:Harald Fripertinger (1997). 7730:, pg. 9, Corollary 1.4A(iii) 7171:ordinary generating function 7111: 3178:{\displaystyle 6a_{2}a_{4}.} 2660:{\displaystyle 3a_{1}a_{2}.} 2146:and so, its cycle index is: 1547:is the image of the element 657:. We can then associate the 7: 7564:Pólya's enumeration theorem 6569:This yields the recurrence 6377:of the cycle that contains 4750:The numerator is 2 for the 3663:{\displaystyle 6a_{2}^{3}.} 3615:{\displaystyle 8a_{3}^{2}.} 3077:{\displaystyle 8a_{3}^{2}.} 1325:as permutations of the set 50:form is frequently used in 10: 7993: 7782:Introductory Combinatorics 7764:van Lint & Wilson 1992 7740:van Lint & Wilson 1992 7507:) is also a function from 6366:{\displaystyle Z(S_{0})=1} 4758:. The 2 is needed because 3444:{\displaystyle a_{1}^{6}.} 2980:{\displaystyle a_{1}^{6}.} 2611:{\displaystyle a_{1}^{3}.} 1300: 815:be a permutation group of 254:permutation representation 7977:Enumerative combinatorics 7879:A Course in Combinatorics 7728:Dixon & Mortimer 1996 7677:Roberts & Tesman 2009 7606:Dixon & Mortimer 1996 5329:{\displaystyle S_{j_{k}}} 4032:, a permutation of order 2395:Thus its cycle index is: 137:Pólya enumeration theorem 52:combinatorial enumeration 7592: 1345:. As an abstract group, 610:to correspond to length 569:and form a partition of 175:of mappings, called the 171:forms a group under the 57:Each permutation π of a 7766:, pg. 463, Theorem 35.1 7742:, pg. 464, Example 35.1 7632:, pg. 231, section 14.3 4838:The cycle index of the 4468:The cycle index of the 3395:Cube with colored faces 2856:and the cycle index is 2695:{\displaystyle 2a_{3}.} 2538:The cycle index of the 91:, … that describes the 7824:, New York: Springer, 7583:analysis of algorithms 7576:symbolic combinatorics 7523:of all functions from 7460: 7370: 7313: 7214: 7071: 6962: 6918: 6847: 6729: 6659: 6560: 6499: 6473: 6418: 6373:and consider the size 6367: 6322: 6103: 6073: 5803: 5626: 5606: 5583: 5542: 5485: 5427: 5377: 5330: 5292: 5257: 5223: 5066: 5039: 4985: 4816: 4741: 4711: 4657: 4448: 4150: 3934: 3853: 3664: 3616: 3568: 3506: 3445: 3396: 3377: 3179: 3134: 3078: 3037: 2981: 2920: 2900: 2825: 2696: 2661: 2612: 2540:edge permutation group 2524: 2356:regular representation 2299:there is at least one 2264: 2137: 2003: 1820: 1551:under the permutation 1501: 1361:regular representation 1291: 1252: 1122: 1086: 1004: 967: 728: 692: 623:will be raised to the 614:cycles). The variable 554: 386: 110:cycle index polynomial 7861:Applied Combinatorics 7840:Applied Combinatorics 7461: 7350: 7314: 7194: 7144:denote the number of 7072: 6963: 6898: 6848: 6709: 6639: 6561: 6500: 6474: 6419: 6368: 6323: 6104: 6102:{\displaystyle S_{n}} 6074: 5783: 5627: 5607: 5584: 5522: 5465: 5407: 5357: 5331: 5293: 5258: 5256:{\displaystyle j_{k}} 5224: 5067: 5019: 4965: 4817: 4742: 4691: 4637: 4449: 4151: 3985: ) elements of 3935: 3854: 3665: 3617: 3569: 3507: 3446: 3399:Consider an ordinary 3394: 3378: 3180: 3135: 3079: 3038: 2982: 2921: 2901: 2826: 2697: 2662: 2613: 2525: 2265: 2138: 2004: 1821: 1502: 1311:rotational symmetries 1292: 1232: 1157:Then the cycle index 1123: 1066: 1005: 947: 729: 672: 555: 387: 195: ) is called a 33:group of permutations 7560:orbit counting lemma 7347: 7191: 6989: 6863: 6576: 6509: 6483: 6428: 6385: 6335: 6116: 6086: 5639: 5616: 5596: 5343: 5306: 5291:{\displaystyle k!/k} 5271: 5240: 5086: 4857: 4762: 4479: 4187: 4055: 3887: 3684: 3636: 3588: 3525: 3468: 3420: 3234: 3146: 3091: 3050: 2994: 2956: 2910: 2871: 2723: 2673: 2628: 2587: 2555:equilateral triangle 2402: 2374:= (1)(2)(3)(4)(5)(6) 2275:A permutation group 2155: 2048: 2034:The symmetric group 1897: 1870:)). The elements of 1694: 1400: 1176: 1024: 892: 826:. Every permutation 669: 659:cycle index monomial 438: 313: 239:to "act" on the set 71:cycle index monomial 7658:of these functions. 6980:we will now write: 6690: 6498:{\displaystyle l-1} 5828: 5061: 4733: 4416: 4390: 4355: 4306: 4142: 3926: 3840: 3819: 3798: 3783: 3752: 3731: 3656: 3608: 3560: 3545: 3488: 3437: 3338: 3317: 3302: 3281: 3126: 3111: 3070: 3029: 3014: 2973: 2770: 2604: 2570:vertex permutations 2495: 2474: 2456: 2209: 1990: 1969: 1951: 1781: 1766: 1748: 1472: 1454: 1305:Consider the group 1283: 1117: 811:More formally, let 739:to the permutation 723: 264:Suppose that group 125:equivalence classes 7820:Permutation Groups 7456: 7309: 7067: 6958: 6843: 6660: 6638: 6566:different cycles. 6556: 6554: 6495: 6469: 6414: 6412: 6363: 6318: 6316: 6276: 6180: 6099: 6069: 6022: 5925: 5902: 5807: 5782: 5705: 5657: 5622: 5602: 5579: 5326: 5288: 5253: 5219: 5062: 5040: 4958: 4812: 4737: 4712: 4580: 4458:Alternating group 4444: 4439: 4435: 4394: 4356: 4341: 4320: 4272: 4146: 4120: 4107: 3930: 3912: 3849: 3826: 3805: 3784: 3769: 3738: 3717: 3660: 3642: 3612: 3594: 3564: 3546: 3531: 3502: 3474: 3441: 3423: 3397: 3373: 3324: 3303: 3288: 3267: 3175: 3130: 3112: 3097: 3074: 3056: 3033: 3015: 3000: 2977: 2959: 2916: 2896: 2821: 2756: 2692: 2657: 2608: 2590: 2520: 2481: 2460: 2442: 2321:sharply transitive 2260: 2195: 2133: 1999: 1976: 1955: 1937: 1816: 1767: 1752: 1734: 1497: 1458: 1440: 1287: 1253: 1231: 1118: 1087: 1042: 1000: 945: 724: 693: 550: 511: 408:cyclic permutation 382: 376: 217:group homomorphism 183:, and denoted Sym( 7849:978-1-4200-9982-9 7791:978-0-13-602040-0 6896: 6760: 6707: 6616: 6614: 6529: 6461: 6304: 6261: 6218: 6165: 6060: 6007: 6002: 5903: 5887: 5882: 5706: 5690: 5642: 5625:{\displaystyle y} 5605:{\displaystyle n} 5574: 5506: 5446: 5405: 5298:cycles of length 5214: 5017: 4882: 4810: 4792: 4752:even permutations 4689: 4504: 4470:alternating group 4434: 4334: 4319: 4260: 4220: 4090: 4088: 4044:cycles of length 3710: 3260: 2919:{\displaystyle n} 2906:) than vertices ( 2888: 2749: 2435: 2383:= (1 4)(2 5)(3 6) 2361:The cyclic group 2188: 1930: 1727: 1433: 1216: 1214: 1131:in the variables 1027: 944: 795:permutation group 418:length of a cycle 197:permutation group 7984: 7958: 7941: 7939: 7891: 7873: 7852: 7834: 7823: 7812: 7794: 7767: 7761: 7755: 7749: 7743: 7737: 7731: 7725: 7719: 7716: 7710: 7707: 7701: 7686: 7680: 7674: 7668: 7665: 7659: 7648: 7642: 7639: 7633: 7627: 7621: 7615: 7609: 7603: 7483:a function from 7465: 7463: 7462: 7457: 7395: 7390: 7389: 7380: 7379: 7369: 7364: 7318: 7316: 7315: 7310: 7302: 7301: 7277: 7276: 7234: 7233: 7224: 7223: 7213: 7208: 7076: 7074: 7073: 7068: 7060: 7059: 7041: 7040: 7028: 7027: 6967: 6965: 6964: 6959: 6951: 6950: 6928: 6927: 6917: 6912: 6897: 6889: 6881: 6880: 6852: 6850: 6849: 6844: 6839: 6838: 6797: 6796: 6767: 6766: 6765: 6759: 6748: 6736: 6728: 6723: 6708: 6706: 6695: 6689: 6679: 6678: 6668: 6658: 6653: 6637: 6636: 6635: 6615: 6613: 6602: 6594: 6593: 6565: 6563: 6562: 6557: 6555: 6530: 6525: 6517: 6504: 6502: 6501: 6496: 6478: 6476: 6475: 6470: 6468: 6467: 6466: 6460: 6449: 6437: 6423: 6421: 6420: 6415: 6413: 6372: 6370: 6369: 6364: 6353: 6352: 6327: 6325: 6324: 6319: 6317: 6310: 6306: 6305: 6300: 6299: 6298: 6289: 6288: 6278: 6275: 6246: 6245: 6227: 6223: 6219: 6214: 6213: 6212: 6203: 6202: 6192: 6179: 6161: 6160: 6138: 6137: 6108: 6106: 6105: 6100: 6098: 6097: 6078: 6076: 6075: 6070: 6065: 6061: 6056: 6055: 6054: 6045: 6044: 6034: 6021: 6003: 6001: 5997: 5996: 5987: 5986: 5985: 5984: 5969: 5968: 5967: 5966: 5965: 5951: 5950: 5941: 5940: 5927: 5924: 5917: 5916: 5901: 5883: 5881: 5877: 5876: 5867: 5866: 5865: 5864: 5849: 5848: 5847: 5846: 5845: 5827: 5826: 5825: 5815: 5805: 5802: 5797: 5781: 5774: 5773: 5752: 5751: 5736: 5735: 5720: 5719: 5704: 5683: 5682: 5667: 5666: 5656: 5631: 5629: 5628: 5623: 5611: 5609: 5608: 5603: 5588: 5586: 5585: 5580: 5575: 5573: 5569: 5568: 5559: 5558: 5557: 5556: 5541: 5536: 5520: 5512: 5507: 5505: 5501: 5500: 5487: 5484: 5479: 5464: 5463: 5462: 5461: 5451: 5447: 5442: 5434: 5426: 5421: 5406: 5404: 5403: 5402: 5401: 5400: 5376: 5371: 5355: 5347: 5335: 5333: 5332: 5327: 5325: 5324: 5323: 5322: 5297: 5295: 5294: 5289: 5284: 5263:subsets of size 5262: 5260: 5259: 5254: 5252: 5251: 5228: 5226: 5225: 5220: 5215: 5213: 5205: 5201: 5200: 5163: 5162: 5143: 5142: 5123: 5122: 5112: 5104: 5103: 5077:Bell polynomials 5071: 5069: 5068: 5063: 5060: 5059: 5058: 5048: 5038: 5033: 5018: 5016: 5012: 5011: 5002: 5001: 5000: 4999: 4984: 4979: 4960: 4957: 4950: 4949: 4928: 4927: 4912: 4911: 4896: 4895: 4875: 4874: 4826:Symmetric group 4821: 4819: 4818: 4813: 4811: 4809: 4798: 4793: 4791: 4790: 4785: 4784: 4775: 4766: 4756:odd permutations 4754:, and 0 for the 4746: 4744: 4743: 4738: 4732: 4731: 4730: 4720: 4710: 4705: 4690: 4688: 4684: 4683: 4674: 4673: 4672: 4671: 4656: 4651: 4635: 4634: 4633: 4626: 4625: 4613: 4612: 4582: 4579: 4572: 4571: 4550: 4549: 4534: 4533: 4518: 4517: 4497: 4496: 4453: 4451: 4450: 4445: 4443: 4442: 4436: 4432: 4421: 4417: 4415: 4411: 4402: 4389: 4385: 4364: 4354: 4349: 4335: 4327: 4321: 4318: odd,  4317: 4305: 4301: 4280: 4271: 4270: 4261: 4253: 4237: 4236: 4221: 4213: 4205: 4204: 4155: 4153: 4152: 4147: 4141: 4137: 4128: 4106: 4102: 4089: 4081: 4073: 4072: 4017:relatively prime 4009:Euler φ-function 4007: ) is the 3939: 3937: 3936: 3931: 3925: 3920: 3905: 3904: 3858: 3856: 3855: 3850: 3845: 3841: 3839: 3834: 3818: 3813: 3797: 3792: 3782: 3777: 3762: 3761: 3751: 3746: 3730: 3725: 3711: 3703: 3669: 3667: 3666: 3661: 3655: 3650: 3621: 3619: 3618: 3613: 3607: 3602: 3573: 3571: 3570: 3565: 3559: 3554: 3544: 3539: 3511: 3509: 3508: 3503: 3498: 3497: 3487: 3482: 3450: 3448: 3447: 3442: 3436: 3431: 3382: 3380: 3379: 3374: 3369: 3365: 3364: 3363: 3354: 3353: 3337: 3332: 3316: 3311: 3301: 3296: 3280: 3275: 3261: 3253: 3184: 3182: 3181: 3176: 3171: 3170: 3161: 3160: 3139: 3137: 3136: 3131: 3125: 3120: 3110: 3105: 3083: 3081: 3080: 3075: 3069: 3064: 3042: 3040: 3039: 3034: 3028: 3023: 3013: 3008: 2986: 2984: 2983: 2978: 2972: 2967: 2925: 2923: 2922: 2917: 2905: 2903: 2902: 2897: 2895: 2894: 2893: 2880: 2830: 2828: 2827: 2822: 2817: 2813: 2812: 2811: 2796: 2795: 2786: 2785: 2769: 2764: 2750: 2742: 2701: 2699: 2698: 2693: 2688: 2687: 2666: 2664: 2663: 2658: 2653: 2652: 2643: 2642: 2617: 2615: 2614: 2609: 2603: 2598: 2529: 2527: 2526: 2521: 2516: 2512: 2511: 2510: 2494: 2489: 2473: 2468: 2455: 2450: 2436: 2428: 2420: 2419: 2389:= (1 6 5 4 3 2). 2386:= (1 5 3)(2 6 4) 2380:= (1 3 5)(2 4 6) 2352:Cayley's theorem 2269: 2267: 2266: 2261: 2256: 2252: 2251: 2250: 2235: 2234: 2225: 2224: 2208: 2203: 2189: 2181: 2173: 2172: 2142: 2140: 2139: 2134: 2060: 2059: 2015:Types of actions 2008: 2006: 2005: 2000: 1995: 1991: 1989: 1984: 1968: 1963: 1950: 1945: 1931: 1923: 1915: 1914: 1876:complete digraph 1825: 1823: 1822: 1817: 1812: 1808: 1807: 1806: 1797: 1796: 1780: 1775: 1765: 1760: 1747: 1742: 1728: 1720: 1712: 1711: 1506: 1504: 1503: 1498: 1493: 1489: 1488: 1487: 1471: 1466: 1453: 1448: 1434: 1426: 1418: 1417: 1349:is known as the 1296: 1294: 1293: 1288: 1282: 1272: 1271: 1261: 1251: 1246: 1230: 1215: 1213: 1212: 1204: 1195: 1127: 1125: 1124: 1119: 1116: 1106: 1105: 1095: 1085: 1080: 1062: 1061: 1060: 1052: 1041: 1013:We associate to 1009: 1007: 1006: 1001: 981: 980: 966: 961: 946: 942: 933: 910: 909: 733: 731: 730: 725: 722: 712: 711: 701: 691: 686: 559: 557: 556: 551: 516: 512: 391: 389: 388: 383: 381: 377: 187: ). Every 7992: 7991: 7987: 7986: 7985: 7983: 7982: 7981: 7962: 7961: 7898: 7889: 7871: 7850: 7832: 7810: 7792: 7776: 7771: 7770: 7762: 7758: 7750: 7746: 7738: 7734: 7726: 7722: 7717: 7713: 7708: 7704: 7687: 7683: 7675: 7671: 7666: 7662: 7649: 7645: 7640: 7636: 7628: 7624: 7616: 7612: 7604: 7600: 7595: 7391: 7385: 7381: 7375: 7371: 7365: 7354: 7348: 7345: 7344: 7337: 7297: 7293: 7272: 7268: 7229: 7225: 7219: 7215: 7209: 7198: 7192: 7189: 7188: 7181: 7165: 7158: 7143: 7134: 7055: 7051: 7036: 7032: 7023: 7019: 6990: 6987: 6986: 6974: 6940: 6936: 6923: 6919: 6913: 6902: 6888: 6876: 6872: 6864: 6861: 6860: 6828: 6824: 6792: 6788: 6761: 6749: 6738: 6732: 6731: 6730: 6724: 6713: 6699: 6694: 6674: 6670: 6669: 6664: 6654: 6643: 6631: 6627: 6620: 6606: 6601: 6589: 6585: 6577: 6574: 6573: 6553: 6552: 6518: 6516: 6512: 6510: 6507: 6506: 6484: 6481: 6480: 6462: 6450: 6439: 6433: 6432: 6431: 6429: 6426: 6425: 6411: 6410: 6388: 6386: 6383: 6382: 6348: 6344: 6336: 6333: 6332: 6315: 6314: 6294: 6290: 6284: 6280: 6279: 6277: 6265: 6260: 6256: 6241: 6237: 6225: 6224: 6208: 6204: 6198: 6194: 6193: 6191: 6187: 6169: 6156: 6152: 6142: 6133: 6129: 6119: 6117: 6114: 6113: 6093: 6089: 6087: 6084: 6083: 6050: 6046: 6040: 6036: 6035: 6033: 6029: 6011: 5992: 5988: 5980: 5976: 5975: 5971: 5970: 5961: 5957: 5956: 5952: 5946: 5942: 5936: 5932: 5928: 5926: 5912: 5908: 5907: 5891: 5872: 5868: 5860: 5856: 5855: 5851: 5850: 5841: 5837: 5833: 5829: 5821: 5817: 5816: 5811: 5806: 5804: 5798: 5787: 5769: 5765: 5747: 5743: 5731: 5727: 5715: 5711: 5710: 5694: 5678: 5674: 5662: 5658: 5646: 5640: 5637: 5636: 5617: 5614: 5613: 5597: 5594: 5593: 5564: 5560: 5552: 5548: 5547: 5543: 5537: 5526: 5521: 5513: 5511: 5496: 5492: 5491: 5486: 5480: 5469: 5457: 5453: 5452: 5435: 5433: 5429: 5428: 5422: 5411: 5396: 5392: 5391: 5387: 5372: 5361: 5356: 5348: 5346: 5344: 5341: 5340: 5318: 5314: 5313: 5309: 5307: 5304: 5303: 5280: 5272: 5269: 5268: 5247: 5243: 5241: 5238: 5237: 5206: 5196: 5192: 5158: 5154: 5138: 5134: 5118: 5114: 5113: 5111: 5099: 5095: 5087: 5084: 5083: 5054: 5050: 5049: 5044: 5034: 5023: 5007: 5003: 4995: 4991: 4990: 4986: 4980: 4969: 4964: 4959: 4945: 4941: 4923: 4919: 4907: 4903: 4891: 4887: 4886: 4870: 4866: 4858: 4855: 4854: 4849: 4840:symmetric group 4836: 4834: 4802: 4797: 4786: 4780: 4776: 4771: 4770: 4765: 4763: 4760: 4759: 4726: 4722: 4721: 4716: 4706: 4695: 4679: 4675: 4667: 4663: 4662: 4658: 4652: 4641: 4636: 4621: 4617: 4608: 4604: 4603: 4599: 4583: 4581: 4567: 4563: 4545: 4541: 4529: 4525: 4513: 4509: 4508: 4492: 4488: 4480: 4477: 4476: 4466: 4464: 4438: 4437: 4430: 4425: 4407: 4403: 4398: 4381: 4365: 4360: 4350: 4345: 4340: 4336: 4326: 4323: 4322: 4315: 4310: 4297: 4281: 4276: 4266: 4262: 4252: 4245: 4244: 4232: 4228: 4212: 4200: 4196: 4188: 4185: 4184: 4170: 4168: 4160:Dihedral group 4133: 4129: 4124: 4098: 4094: 4080: 4068: 4064: 4056: 4053: 4052: 4031: 3968: 3954: 3952: 3921: 3916: 3900: 3896: 3888: 3885: 3884: 3878: 3876: 3868:Identity group 3865: 3835: 3830: 3814: 3809: 3793: 3788: 3778: 3773: 3757: 3753: 3747: 3742: 3726: 3721: 3716: 3712: 3702: 3685: 3682: 3681: 3651: 3646: 3637: 3634: 3633: 3603: 3598: 3589: 3586: 3585: 3555: 3550: 3540: 3535: 3526: 3523: 3522: 3493: 3489: 3483: 3478: 3469: 3466: 3465: 3432: 3427: 3421: 3418: 3417: 3389: 3359: 3355: 3349: 3345: 3333: 3328: 3312: 3307: 3297: 3292: 3276: 3271: 3266: 3262: 3252: 3235: 3232: 3231: 3226: 3210:rotoreflections 3166: 3162: 3156: 3152: 3147: 3144: 3143: 3121: 3116: 3106: 3101: 3092: 3089: 3088: 3065: 3060: 3051: 3048: 3047: 3024: 3019: 3009: 3004: 2995: 2992: 2991: 2968: 2963: 2957: 2954: 2953: 2947: 2940: 2932: 2911: 2908: 2907: 2889: 2876: 2875: 2874: 2872: 2869: 2868: 2866: 2855: 2840: 2807: 2803: 2791: 2787: 2781: 2777: 2765: 2760: 2755: 2751: 2741: 2724: 2721: 2720: 2715: 2683: 2679: 2674: 2671: 2670: 2648: 2644: 2638: 2634: 2629: 2626: 2625: 2599: 2594: 2588: 2585: 2584: 2578: 2567: 2552: 2544: 2506: 2502: 2490: 2485: 2469: 2464: 2451: 2446: 2441: 2437: 2427: 2415: 2411: 2403: 2400: 2399: 2377:= (1 2 3 4 5 6) 2367: 2246: 2242: 2230: 2226: 2220: 2216: 2204: 2199: 2194: 2190: 2180: 2168: 2164: 2156: 2153: 2152: 2055: 2051: 2049: 2046: 2045: 2040: 2017: 1985: 1980: 1964: 1959: 1946: 1941: 1936: 1932: 1922: 1910: 1906: 1898: 1895: 1894: 1883: 1837: 1802: 1798: 1792: 1788: 1776: 1771: 1761: 1756: 1743: 1738: 1733: 1729: 1719: 1707: 1703: 1695: 1692: 1691: 1616: 1518: 1483: 1479: 1467: 1462: 1449: 1444: 1439: 1435: 1425: 1413: 1409: 1401: 1398: 1397: 1390: 1383: 1376: 1369: 1358: 1319:Euclidean plane 1303: 1267: 1263: 1262: 1257: 1247: 1236: 1220: 1208: 1200: 1199: 1194: 1177: 1174: 1173: 1153: 1144: 1137: 1101: 1097: 1096: 1091: 1081: 1070: 1056: 1048: 1047: 1043: 1031: 1025: 1022: 1021: 976: 972: 962: 951: 943: and  940: 929: 905: 901: 893: 890: 889: 872: 857:be denoted by | 852: 846: 840: 787: 780: 774: 768: 761: 755: 749: 707: 703: 702: 697: 687: 676: 670: 667: 666: 644: 631: 622: 609: 600: 593: 586: 510: 509: 504: 499: 494: 489: 484: 478: 477: 472: 467: 462: 457: 452: 445: 441: 439: 436: 435: 375: 374: 369: 364: 359: 354: 348: 347: 342: 337: 332: 327: 320: 316: 314: 311: 310: 294: 177:symmetric group 159:map from a set 153: 114:cycle indicator 103: 90: 83: 12: 11: 5: 7990: 7980: 7979: 7974: 7960: 7959: 7942: 7915: 7909:Marko Riedel, 7907: 7901:Marko Riedel, 7897: 7896:External links 7894: 7893: 7892: 7887: 7874: 7869: 7853: 7848: 7835: 7830: 7813: 7808: 7795: 7790: 7775: 7772: 7769: 7768: 7756: 7744: 7732: 7720: 7711: 7702: 7681: 7669: 7660: 7643: 7634: 7622: 7610: 7597: 7596: 7594: 7591: 7574:. The area of 7469: 7468: 7467: 7466: 7455: 7452: 7449: 7446: 7443: 7440: 7437: 7434: 7431: 7428: 7425: 7422: 7419: 7416: 7413: 7410: 7407: 7404: 7401: 7398: 7394: 7388: 7384: 7378: 7374: 7368: 7363: 7360: 7357: 7353: 7333: 7323: 7322: 7321: 7320: 7308: 7305: 7300: 7296: 7292: 7289: 7286: 7283: 7280: 7275: 7271: 7267: 7264: 7261: 7258: 7255: 7252: 7249: 7246: 7243: 7240: 7237: 7232: 7228: 7222: 7218: 7212: 7207: 7204: 7201: 7197: 7177: 7166:= 1. We have: 7163: 7156: 7139: 7130: 7118:= 2), for 1 ≤ 7080: 7079: 7078: 7077: 7066: 7063: 7058: 7054: 7050: 7047: 7044: 7039: 7035: 7031: 7026: 7022: 7018: 7015: 7012: 7009: 7006: 7003: 7000: 6997: 6994: 6973: 6970: 6969: 6968: 6957: 6954: 6949: 6946: 6943: 6939: 6935: 6932: 6926: 6922: 6916: 6911: 6908: 6905: 6901: 6895: 6892: 6887: 6884: 6879: 6875: 6871: 6868: 6854: 6853: 6842: 6837: 6834: 6831: 6827: 6823: 6820: 6816: 6813: 6810: 6807: 6804: 6801: 6795: 6791: 6786: 6783: 6780: 6777: 6774: 6771: 6764: 6758: 6755: 6752: 6747: 6744: 6741: 6735: 6727: 6722: 6719: 6716: 6712: 6705: 6702: 6698: 6693: 6688: 6685: 6682: 6677: 6673: 6667: 6663: 6657: 6652: 6649: 6646: 6642: 6634: 6630: 6626: 6623: 6619: 6612: 6609: 6605: 6600: 6597: 6592: 6588: 6584: 6581: 6551: 6548: 6545: 6542: 6539: 6536: 6533: 6528: 6524: 6521: 6515: 6514: 6494: 6491: 6488: 6465: 6459: 6456: 6453: 6448: 6445: 6442: 6436: 6409: 6406: 6403: 6400: 6397: 6394: 6391: 6390: 6362: 6359: 6356: 6351: 6347: 6343: 6340: 6329: 6328: 6313: 6309: 6303: 6297: 6293: 6287: 6283: 6274: 6271: 6268: 6264: 6259: 6255: 6252: 6249: 6244: 6240: 6236: 6233: 6230: 6228: 6226: 6222: 6217: 6211: 6207: 6201: 6197: 6190: 6186: 6183: 6178: 6175: 6172: 6168: 6164: 6159: 6155: 6151: 6148: 6145: 6143: 6141: 6136: 6132: 6128: 6125: 6122: 6121: 6096: 6092: 6080: 6079: 6068: 6064: 6059: 6053: 6049: 6043: 6039: 6032: 6028: 6025: 6020: 6017: 6014: 6010: 6006: 6000: 5995: 5991: 5983: 5979: 5974: 5964: 5960: 5955: 5949: 5945: 5939: 5935: 5931: 5923: 5920: 5915: 5911: 5906: 5900: 5897: 5894: 5890: 5886: 5880: 5875: 5871: 5863: 5859: 5854: 5844: 5840: 5836: 5832: 5824: 5820: 5814: 5810: 5801: 5796: 5793: 5790: 5786: 5780: 5777: 5772: 5768: 5764: 5761: 5758: 5755: 5750: 5746: 5742: 5739: 5734: 5730: 5726: 5723: 5718: 5714: 5709: 5703: 5700: 5697: 5693: 5689: 5686: 5681: 5677: 5673: 5670: 5665: 5661: 5655: 5652: 5649: 5645: 5621: 5601: 5590: 5589: 5578: 5572: 5567: 5563: 5555: 5551: 5546: 5540: 5535: 5532: 5529: 5525: 5519: 5516: 5510: 5504: 5499: 5495: 5490: 5483: 5478: 5475: 5472: 5468: 5460: 5456: 5450: 5445: 5441: 5438: 5432: 5425: 5420: 5417: 5414: 5410: 5399: 5395: 5390: 5386: 5383: 5380: 5375: 5370: 5367: 5364: 5360: 5354: 5351: 5336:. This yields 5321: 5317: 5312: 5287: 5283: 5279: 5276: 5250: 5246: 5230: 5229: 5218: 5212: 5209: 5204: 5199: 5195: 5190: 5187: 5184: 5181: 5178: 5175: 5172: 5169: 5166: 5161: 5157: 5152: 5149: 5146: 5141: 5137: 5132: 5129: 5126: 5121: 5117: 5110: 5107: 5102: 5098: 5094: 5091: 5073: 5072: 5057: 5053: 5047: 5043: 5037: 5032: 5029: 5026: 5022: 5015: 5010: 5006: 4998: 4994: 4989: 4983: 4978: 4975: 4972: 4968: 4963: 4956: 4953: 4948: 4944: 4940: 4937: 4934: 4931: 4926: 4922: 4918: 4915: 4910: 4906: 4902: 4899: 4894: 4890: 4885: 4881: 4878: 4873: 4869: 4865: 4862: 4845: 4835: 4830: 4824: 4808: 4805: 4801: 4796: 4789: 4783: 4779: 4774: 4769: 4748: 4747: 4736: 4729: 4725: 4719: 4715: 4709: 4704: 4701: 4698: 4694: 4687: 4682: 4678: 4670: 4666: 4661: 4655: 4650: 4647: 4644: 4640: 4632: 4629: 4624: 4620: 4616: 4611: 4607: 4602: 4598: 4595: 4592: 4589: 4586: 4578: 4575: 4570: 4566: 4562: 4559: 4556: 4553: 4548: 4544: 4540: 4537: 4532: 4528: 4524: 4521: 4516: 4512: 4507: 4503: 4500: 4495: 4491: 4487: 4484: 4465: 4462: 4456: 4455: 4454: 4441: 4429: 4426: 4424: 4420: 4414: 4410: 4406: 4401: 4397: 4393: 4388: 4384: 4380: 4377: 4374: 4371: 4368: 4363: 4359: 4353: 4348: 4344: 4339: 4333: 4330: 4325: 4324: 4314: 4311: 4309: 4304: 4300: 4296: 4293: 4290: 4287: 4284: 4279: 4275: 4269: 4265: 4259: 4256: 4251: 4250: 4248: 4243: 4240: 4235: 4231: 4227: 4224: 4219: 4216: 4211: 4208: 4203: 4199: 4195: 4192: 4174:dihedral group 4169: 4164: 4158: 4157: 4156: 4145: 4140: 4136: 4132: 4127: 4123: 4119: 4116: 4113: 4110: 4105: 4101: 4097: 4093: 4087: 4084: 4079: 4076: 4071: 4067: 4063: 4060: 4027: 3964: 3953: 3948: 3942: 3941: 3940: 3929: 3924: 3919: 3915: 3911: 3908: 3903: 3899: 3895: 3892: 3877: 3872: 3866: 3864: 3861: 3860: 3859: 3848: 3844: 3838: 3833: 3829: 3825: 3822: 3817: 3812: 3808: 3804: 3801: 3796: 3791: 3787: 3781: 3776: 3772: 3768: 3765: 3760: 3756: 3750: 3745: 3741: 3737: 3734: 3729: 3724: 3720: 3715: 3709: 3706: 3701: 3698: 3695: 3692: 3689: 3671: 3670: 3659: 3654: 3649: 3645: 3641: 3628: 3627: 3623: 3622: 3611: 3606: 3601: 3597: 3593: 3580: 3579: 3575: 3574: 3563: 3558: 3553: 3549: 3543: 3538: 3534: 3530: 3518: 3517: 3513: 3512: 3501: 3496: 3492: 3486: 3481: 3477: 3473: 3457: 3456: 3452: 3451: 3440: 3435: 3430: 3426: 3413: 3412: 3388: 3385: 3384: 3383: 3372: 3368: 3362: 3358: 3352: 3348: 3344: 3341: 3336: 3331: 3327: 3323: 3320: 3315: 3310: 3306: 3300: 3295: 3291: 3287: 3284: 3279: 3274: 3270: 3265: 3259: 3256: 3251: 3248: 3245: 3242: 3239: 3224: 3214: 3213: 3212:by 90 degrees. 3206: 3203: 3200: 3197: 3186: 3185: 3174: 3169: 3165: 3159: 3155: 3151: 3140: 3129: 3124: 3119: 3115: 3109: 3104: 3100: 3096: 3084: 3073: 3068: 3063: 3059: 3055: 3043: 3032: 3027: 3022: 3018: 3012: 3007: 3003: 2999: 2987: 2976: 2971: 2966: 2962: 2945: 2938: 2931: 2928: 2915: 2892: 2887: 2884: 2879: 2864: 2853: 2838: 2832: 2831: 2820: 2816: 2810: 2806: 2802: 2799: 2794: 2790: 2784: 2780: 2776: 2773: 2768: 2763: 2759: 2754: 2748: 2745: 2740: 2737: 2734: 2731: 2728: 2713: 2703: 2702: 2691: 2686: 2682: 2678: 2667: 2656: 2651: 2647: 2641: 2637: 2633: 2618: 2607: 2602: 2597: 2593: 2576: 2565: 2550: 2543: 2536: 2531: 2530: 2519: 2515: 2509: 2505: 2501: 2498: 2493: 2488: 2484: 2480: 2477: 2472: 2467: 2463: 2459: 2454: 2449: 2445: 2440: 2434: 2431: 2426: 2423: 2418: 2414: 2410: 2407: 2393: 2392: 2391: 2390: 2387: 2384: 2381: 2378: 2375: 2365: 2358:of the group. 2340:if and only if 2273: 2272: 2271: 2270: 2259: 2255: 2249: 2245: 2241: 2238: 2233: 2229: 2223: 2219: 2215: 2212: 2207: 2202: 2198: 2193: 2187: 2184: 2179: 2176: 2171: 2167: 2163: 2160: 2144: 2143: 2132: 2129: 2126: 2123: 2120: 2117: 2114: 2111: 2108: 2105: 2102: 2099: 2096: 2093: 2090: 2087: 2084: 2081: 2078: 2075: 2072: 2069: 2066: 2063: 2058: 2054: 2038: 2029:natural action 2016: 2013: 2012: 2011: 2010: 2009: 1998: 1994: 1988: 1983: 1979: 1975: 1972: 1967: 1962: 1958: 1954: 1949: 1944: 1940: 1935: 1929: 1926: 1921: 1918: 1913: 1909: 1905: 1902: 1881: 1835: 1829: 1828: 1827: 1826: 1815: 1811: 1805: 1801: 1795: 1791: 1787: 1784: 1779: 1774: 1770: 1764: 1759: 1755: 1751: 1746: 1741: 1737: 1732: 1726: 1723: 1718: 1715: 1710: 1706: 1702: 1699: 1614: 1609:complete graph 1516: 1510: 1509: 1508: 1507: 1496: 1492: 1486: 1482: 1478: 1475: 1470: 1465: 1461: 1457: 1452: 1447: 1443: 1438: 1432: 1429: 1424: 1421: 1416: 1412: 1408: 1405: 1388: 1381: 1374: 1367: 1356: 1302: 1299: 1298: 1297: 1286: 1281: 1278: 1275: 1270: 1266: 1260: 1256: 1250: 1245: 1242: 1239: 1235: 1229: 1226: 1223: 1219: 1211: 1207: 1203: 1198: 1193: 1190: 1187: 1184: 1181: 1149: 1142: 1135: 1129: 1128: 1115: 1112: 1109: 1104: 1100: 1094: 1090: 1084: 1079: 1076: 1073: 1069: 1065: 1059: 1055: 1051: 1046: 1040: 1037: 1034: 1030: 1011: 1010: 999: 996: 993: 990: 987: 984: 979: 975: 970: 965: 960: 957: 954: 950: 939: 936: 932: 928: 925: 922: 919: 916: 913: 908: 904: 900: 897: 868: 850: 844: 838: 786: 783: 778: 772: 766: 759: 753: 747: 737: 736: 735: 734: 721: 718: 715: 710: 706: 700: 696: 690: 685: 682: 679: 675: 640: 636:) power where 627: 618: 605: 598: 591: 584: 563: 562: 561: 560: 549: 546: 543: 540: 537: 534: 531: 528: 525: 522: 519: 515: 508: 505: 503: 500: 498: 495: 493: 490: 488: 485: 483: 480: 479: 476: 473: 471: 468: 466: 463: 461: 458: 456: 453: 451: 448: 447: 444: 413:cycle notation 395: 394: 393: 392: 380: 373: 370: 368: 365: 363: 360: 358: 355: 353: 350: 349: 346: 343: 341: 338: 336: 333: 331: 328: 326: 323: 322: 319: 293: 290: 227: ). The 213:abstract group 207: |. Let 152: 149: 145:species theory 99: 88: 81: 65:that set into 9: 6: 4: 3: 2: 7989: 7978: 7975: 7973: 7972:Combinatorics 7970: 7969: 7967: 7956: 7952: 7948: 7943: 7938: 7933: 7929: 7925: 7921: 7916: 7914: 7913: 7908: 7906: 7905: 7900: 7899: 7890: 7888:0-521-42260-4 7884: 7880: 7875: 7872: 7870:0-471-59504-7 7866: 7862: 7858: 7854: 7851: 7845: 7841: 7836: 7833: 7831:0-387-94599-7 7827: 7822: 7821: 7814: 7811: 7809:0-521-45761-0 7805: 7801: 7796: 7793: 7787: 7783: 7778: 7777: 7765: 7760: 7753: 7748: 7741: 7736: 7729: 7724: 7715: 7706: 7699: 7695: 7691: 7685: 7678: 7673: 7664: 7657: 7654:really means 7653: 7647: 7638: 7631: 7626: 7620:, pp. 227–228 7619: 7614: 7607: 7602: 7598: 7590: 7588: 7584: 7579: 7577: 7573: 7567: 7565: 7561: 7556: 7554: 7550: 7546: 7542: 7538: 7534: 7530: 7526: 7522: 7518: 7514: 7510: 7506: 7502: 7498: 7494: 7490: 7486: 7482: 7478: 7474: 7453: 7447: 7444: 7441: 7438: 7435: 7432: 7429: 7426: 7423: 7420: 7417: 7414: 7411: 7405: 7402: 7399: 7396: 7392: 7386: 7382: 7376: 7372: 7366: 7361: 7358: 7355: 7351: 7343: 7342: 7341: 7340: 7339: 7338:is given by: 7336: 7332: 7328: 7306: 7298: 7294: 7290: 7287: 7284: 7281: 7278: 7273: 7269: 7265: 7262: 7259: 7256: 7253: 7250: 7247: 7244: 7238: 7235: 7230: 7226: 7220: 7216: 7210: 7205: 7202: 7199: 7195: 7187: 7186: 7185: 7184: 7183: 7182:is given by: 7180: 7176: 7172: 7167: 7162: 7155: 7151: 7147: 7142: 7138: 7133: 7129: 7125: 7121: 7117: 7114:for the case 7113: 7109: 7105: 7101: 7097: 7093: 7089: 7085: 7064: 7056: 7052: 7048: 7045: 7042: 7037: 7033: 7029: 7024: 7020: 7016: 7013: 7007: 7004: 6998: 6992: 6985: 6984: 6983: 6982: 6981: 6979: 6955: 6947: 6944: 6941: 6937: 6930: 6924: 6920: 6914: 6909: 6906: 6903: 6899: 6893: 6890: 6885: 6877: 6873: 6866: 6859: 6858: 6857: 6835: 6832: 6829: 6825: 6818: 6814: 6808: 6805: 6802: 6793: 6789: 6784: 6778: 6775: 6772: 6756: 6753: 6750: 6745: 6742: 6739: 6725: 6720: 6717: 6714: 6710: 6703: 6700: 6696: 6691: 6683: 6675: 6671: 6665: 6661: 6655: 6650: 6647: 6644: 6640: 6632: 6628: 6624: 6621: 6617: 6610: 6607: 6603: 6598: 6590: 6586: 6579: 6572: 6571: 6570: 6567: 6549: 6543: 6540: 6537: 6531: 6526: 6522: 6519: 6492: 6489: 6486: 6457: 6454: 6451: 6446: 6443: 6440: 6407: 6404: 6401: 6398: 6395: 6392: 6380: 6376: 6360: 6357: 6349: 6345: 6338: 6311: 6307: 6301: 6295: 6291: 6285: 6281: 6272: 6269: 6266: 6257: 6253: 6250: 6242: 6238: 6231: 6229: 6220: 6215: 6209: 6205: 6199: 6195: 6188: 6184: 6181: 6176: 6173: 6170: 6157: 6153: 6146: 6144: 6134: 6130: 6123: 6112: 6111: 6110: 6094: 6090: 6066: 6062: 6057: 6051: 6047: 6041: 6037: 6030: 6026: 6023: 6018: 6015: 6012: 6004: 5998: 5993: 5989: 5981: 5977: 5972: 5962: 5958: 5947: 5943: 5937: 5933: 5921: 5918: 5913: 5909: 5898: 5895: 5892: 5884: 5878: 5873: 5869: 5861: 5857: 5852: 5842: 5838: 5834: 5830: 5822: 5818: 5812: 5808: 5799: 5794: 5791: 5788: 5784: 5778: 5775: 5770: 5766: 5762: 5759: 5756: 5753: 5748: 5744: 5740: 5737: 5732: 5728: 5724: 5721: 5716: 5712: 5707: 5701: 5698: 5695: 5687: 5679: 5675: 5668: 5663: 5659: 5653: 5650: 5647: 5635: 5634: 5633: 5619: 5599: 5576: 5570: 5565: 5561: 5553: 5549: 5544: 5538: 5533: 5530: 5527: 5523: 5517: 5514: 5508: 5502: 5497: 5493: 5488: 5481: 5476: 5473: 5470: 5466: 5458: 5454: 5448: 5443: 5439: 5436: 5430: 5423: 5418: 5415: 5412: 5408: 5397: 5393: 5384: 5381: 5373: 5368: 5365: 5362: 5358: 5352: 5349: 5339: 5338: 5337: 5319: 5315: 5310: 5301: 5285: 5281: 5277: 5274: 5266: 5248: 5244: 5235: 5216: 5210: 5207: 5197: 5193: 5188: 5182: 5179: 5176: 5170: 5167: 5164: 5159: 5155: 5150: 5147: 5144: 5139: 5135: 5130: 5127: 5119: 5115: 5108: 5100: 5096: 5089: 5082: 5081: 5080: 5078: 5055: 5051: 5045: 5041: 5035: 5030: 5027: 5024: 5020: 5013: 5008: 5004: 4996: 4992: 4987: 4981: 4976: 4973: 4970: 4966: 4961: 4954: 4951: 4946: 4942: 4938: 4935: 4932: 4929: 4924: 4920: 4916: 4913: 4908: 4904: 4900: 4897: 4892: 4888: 4883: 4879: 4871: 4867: 4860: 4853: 4852: 4851: 4848: 4844: 4841: 4833: 4829: 4823: 4806: 4803: 4799: 4794: 4781: 4777: 4767: 4757: 4753: 4734: 4727: 4723: 4717: 4713: 4707: 4702: 4699: 4696: 4692: 4685: 4680: 4676: 4668: 4664: 4659: 4653: 4648: 4645: 4642: 4638: 4630: 4627: 4622: 4618: 4614: 4609: 4605: 4596: 4593: 4587: 4584: 4576: 4573: 4568: 4564: 4560: 4557: 4554: 4551: 4546: 4542: 4538: 4535: 4530: 4526: 4522: 4519: 4514: 4510: 4505: 4501: 4493: 4489: 4482: 4475: 4474: 4473: 4471: 4461: 4427: 4422: 4418: 4412: 4408: 4404: 4399: 4395: 4391: 4386: 4382: 4375: 4372: 4369: 4361: 4357: 4351: 4346: 4342: 4337: 4331: 4328: 4312: 4307: 4302: 4298: 4291: 4288: 4285: 4277: 4273: 4267: 4263: 4257: 4254: 4246: 4241: 4233: 4229: 4222: 4217: 4214: 4209: 4201: 4197: 4190: 4183: 4182: 4181: 4179: 4175: 4167: 4163: 4143: 4138: 4134: 4130: 4125: 4121: 4114: 4108: 4103: 4095: 4091: 4085: 4082: 4077: 4069: 4065: 4058: 4051: 4050: 4049: 4047: 4043: 4039: 4035: 4030: 4026: 4022: 4018: 4014: 4010: 4006: 4002: 3998: 3995: 3991: 3988: 3984: 3980: 3976: 3974: 3967: 3963: 3959: 3951: 3947: 3944:Cyclic group 3927: 3922: 3917: 3913: 3909: 3901: 3897: 3890: 3883: 3882: 3881: 3875: 3871: 3846: 3842: 3836: 3831: 3827: 3823: 3820: 3815: 3810: 3806: 3802: 3799: 3794: 3789: 3785: 3779: 3774: 3770: 3766: 3763: 3758: 3754: 3748: 3743: 3739: 3735: 3732: 3727: 3722: 3718: 3713: 3707: 3704: 3699: 3693: 3687: 3680: 3679: 3678: 3676: 3657: 3652: 3647: 3643: 3639: 3630: 3629: 3625: 3624: 3609: 3604: 3599: 3595: 3591: 3582: 3581: 3577: 3576: 3561: 3556: 3551: 3547: 3541: 3536: 3532: 3528: 3520: 3519: 3515: 3514: 3499: 3494: 3490: 3484: 3479: 3475: 3471: 3463: 3459: 3458: 3454: 3453: 3438: 3433: 3428: 3424: 3415: 3414: 3411:The identity: 3410: 3409: 3408: 3406: 3402: 3393: 3370: 3366: 3360: 3356: 3350: 3346: 3342: 3339: 3334: 3329: 3325: 3321: 3318: 3313: 3308: 3304: 3298: 3293: 3289: 3285: 3282: 3277: 3272: 3268: 3263: 3257: 3254: 3249: 3243: 3237: 3230: 3229: 3228: 3223: 3219: 3211: 3207: 3204: 3201: 3198: 3196:The identity. 3195: 3194: 3193: 3191: 3172: 3167: 3163: 3157: 3153: 3149: 3141: 3127: 3122: 3117: 3113: 3107: 3102: 3098: 3094: 3085: 3071: 3066: 3061: 3057: 3053: 3044: 3030: 3025: 3020: 3016: 3010: 3005: 3001: 2997: 2988: 2974: 2969: 2964: 2960: 2951: 2950: 2949: 2944: 2937: 2927: 2913: 2885: 2882: 2863: 2859: 2852: 2848: 2844: 2837: 2818: 2814: 2808: 2804: 2800: 2797: 2792: 2788: 2782: 2778: 2774: 2771: 2766: 2761: 2757: 2752: 2746: 2743: 2738: 2732: 2726: 2719: 2718: 2717: 2712: 2708: 2689: 2684: 2680: 2676: 2668: 2654: 2649: 2645: 2639: 2635: 2631: 2623: 2619: 2605: 2600: 2595: 2591: 2582: 2581: 2580: 2575: 2571: 2564: 2560: 2556: 2549: 2541: 2535: 2517: 2513: 2507: 2503: 2499: 2496: 2491: 2486: 2482: 2478: 2475: 2470: 2465: 2461: 2457: 2452: 2447: 2443: 2438: 2432: 2429: 2424: 2416: 2412: 2405: 2398: 2397: 2396: 2388: 2385: 2382: 2379: 2376: 2373: 2372: 2371: 2370: 2369: 2364: 2359: 2357: 2353: 2349: 2345: 2341: 2337: 2333: 2329: 2324: 2322: 2318: 2314: 2310: 2306: 2302: 2298: 2294: 2290: 2286: 2282: 2278: 2257: 2253: 2247: 2243: 2239: 2236: 2231: 2227: 2221: 2217: 2213: 2210: 2205: 2200: 2196: 2191: 2185: 2182: 2177: 2169: 2165: 2158: 2151: 2150: 2149: 2148: 2147: 2124: 2118: 2112: 2106: 2100: 2094: 2088: 2082: 2076: 2070: 2067: 2061: 2056: 2052: 2044: 2043: 2042: 2037: 2032: 2030: 2026: 2021: 1996: 1992: 1986: 1981: 1977: 1973: 1970: 1965: 1960: 1956: 1952: 1947: 1942: 1938: 1933: 1927: 1924: 1919: 1911: 1907: 1900: 1893: 1892: 1891: 1890: 1889: 1887: 1880: 1877: 1873: 1869: 1865: 1861: 1857: 1853: 1849: 1845: 1841: 1834: 1813: 1809: 1803: 1799: 1793: 1789: 1785: 1782: 1777: 1772: 1768: 1762: 1757: 1753: 1749: 1744: 1739: 1735: 1730: 1724: 1721: 1716: 1708: 1704: 1697: 1690: 1689: 1688: 1687: 1686: 1684: 1680: 1676: 1672: 1668: 1664: 1660: 1656: 1652: 1648: 1644: 1640: 1636: 1633: 1629: 1626: 1623: 1620: 1613: 1610: 1606: 1602: 1598: 1594: 1590: 1586: 1582: 1578: 1574: 1570: 1566: 1562: 1558: 1554: 1550: 1546: 1542: 1538: 1534: 1530: 1526: 1522: 1515: 1494: 1490: 1484: 1480: 1476: 1473: 1468: 1463: 1459: 1455: 1450: 1445: 1441: 1436: 1430: 1427: 1422: 1414: 1410: 1403: 1396: 1395: 1394: 1393: 1392: 1387: 1380: 1373: 1366: 1362: 1355: 1352: 1348: 1344: 1340: 1336: 1332: 1328: 1324: 1320: 1316: 1312: 1308: 1284: 1276: 1268: 1264: 1258: 1254: 1248: 1243: 1240: 1237: 1233: 1227: 1224: 1221: 1217: 1205: 1196: 1191: 1185: 1179: 1172: 1171: 1170: 1168: 1164: 1160: 1155: 1152: 1148: 1141: 1134: 1110: 1102: 1098: 1092: 1088: 1082: 1077: 1074: 1071: 1067: 1063: 1053: 1044: 1038: 1035: 1032: 1028: 1020: 1019: 1018: 1017:the monomial 1016: 997: 994: 991: 985: 977: 973: 968: 963: 958: 955: 952: 948: 934: 930: 926: 920: 914: 906: 902: 898: 895: 888: 887: 886: 884: 880: 876: 871: 867: 862: 860: 856: 849: 843: 837: 833: 829: 825: 821: 818: 814: 809: 807: 803: 799: 796: 792: 782: 777: 771: 765: 758: 752: 746: 742: 716: 708: 704: 698: 694: 688: 683: 680: 677: 673: 665: 664: 663: 662: 661: 660: 656: 652: 648: 643: 639: 635: 630: 626: 621: 617: 613: 608: 604: 597: 590: 583: 579: 574: 572: 568: 547: 541: 532: 523: 517: 513: 506: 501: 496: 491: 486: 481: 474: 469: 464: 459: 454: 449: 442: 434: 433: 432: 431: 430: 428: 427: 421: 419: 414: 410: 409: 404: 400: 378: 371: 366: 361: 356: 351: 344: 339: 334: 329: 324: 317: 309: 308: 307: 306: 305: 303: 300:= {1,2, ..., 299: 289: 287: 283: 279: 275: 271: 267: 262: 260: 256: 255: 250: 246: 242: 238: 234: 230: 226: 222: 218: 214: 210: 206: 202: 198: 194: 190: 186: 182: 178: 174: 170: 166: 162: 158: 148: 146: 142: 138: 134: 130: 126: 121: 119: 115: 111: 107: 102: 98: 94: 87: 80: 77:in variables 76: 72: 68: 64: 60: 55: 53: 49: 45: 41: 37: 34: 30: 26: 22: 19: 18:combinatorial 7954: 7950: 7927: 7923: 7910: 7902: 7878: 7860: 7857:Tucker, Alan 7839: 7819: 7799: 7781: 7759: 7752:Cameron 1994 7747: 7735: 7723: 7714: 7705: 7697: 7693: 7689: 7684: 7672: 7663: 7655: 7651: 7646: 7637: 7630:Cameron 1994 7625: 7618:Cameron 1994 7613: 7601: 7580: 7568: 7557: 7552: 7548: 7544: 7540: 7536: 7532: 7528: 7524: 7520: 7516: 7512: 7508: 7504: 7500: 7496: 7492: 7488: 7484: 7480: 7476: 7472: 7470: 7334: 7330: 7324: 7178: 7174: 7168: 7160: 7153: 7149: 7140: 7136: 7131: 7127: 7123: 7119: 7115: 7107: 7103: 7099: 7098:-subsets of 7095: 7091: 7087: 7083: 7081: 6977: 6975: 6972:Applications 6855: 6568: 6378: 6374: 6330: 6081: 5591: 5299: 5264: 5233: 5231: 5074: 4846: 4842: 4837: 4831: 4827: 4749: 4467: 4459: 4178:cyclic group 4176:is like the 4171: 4165: 4161: 4045: 4041: 4037: 4033: 4028: 4024: 4020: 4012: 4004: 4000: 3996: 3989: 3982: 3978: 3972: 3965: 3961: 3958:cyclic group 3955: 3949: 3945: 3879: 3873: 3869: 3674: 3672: 3404: 3398: 3221: 3217: 3215: 3187: 2942: 2935: 2933: 2861: 2857: 2850: 2835: 2833: 2710: 2706: 2704: 2573: 2569: 2562: 2547: 2545: 2539: 2532: 2394: 2362: 2360: 2355: 2347: 2343: 2335: 2331: 2325: 2320: 2316: 2312: 2308: 2304: 2300: 2296: 2292: 2288: 2284: 2280: 2276: 2274: 2145: 2035: 2033: 2028: 2022: 2018: 1878: 1871: 1867: 1863: 1859: 1855: 1851: 1847: 1846:would send ( 1843: 1839: 1832: 1830: 1682: 1678: 1674: 1670: 1666: 1662: 1658: 1654: 1650: 1646: 1642: 1638: 1634: 1631: 1627: 1624: 1621: 1618: 1611: 1604: 1603:= {1,3} and 1600: 1596: 1592: 1588: 1584: 1580: 1576: 1572: 1568: 1564: 1560: 1556: 1552: 1548: 1544: 1540: 1536: 1532: 1528: 1527:would send { 1524: 1520: 1513: 1511: 1385: 1378: 1371: 1364: 1360: 1353: 1351:cyclic group 1346: 1342: 1330: 1326: 1322: 1306: 1304: 1169:is given by 1166: 1162: 1158: 1156: 1150: 1146: 1139: 1132: 1130: 1014: 1012: 882: 878: 874: 869: 865: 863: 858: 854: 847: 841: 835: 831: 827: 823: 819: 812: 810: 805: 801: 797: 790: 788: 775: 769: 763: 756: 750: 744: 740: 738: 658: 654: 650: 646: 641: 637: 633: 628: 624: 619: 615: 611: 606: 602: 595: 588: 581: 575: 570: 566: 564: 426:fixed points 424: 422: 417: 412: 406: 402: 398: 396: 301: 297: 295: 281: 277: 273: 269: 268:acts on set 265: 263: 258: 252: 249:group action 244: 240: 236: 232: 224: 220: 208: 204: 200: 192: 184: 180: 168: 164: 160: 154: 141:differential 122: 117: 113: 109: 105: 100: 96: 85: 78: 70: 56: 44:coefficients 24: 15: 7930:: 133–156. 7656:composition 7102:and on the 4433: even. 3977:, that is, 2845:to its own 2622:reflections 2338:is regular 2334:on the set 2279:on the set 1661:) and e = ( 1555:). The set 822:and degree 791:cycle index 173:composition 127:due to the 118:cycle index 61:of objects 25:cycle index 21:mathematics 7966:Categories 7774:References 7696:acting on 7572:integrated 7555: |. 7491:. For any 6424:There are 4015:which are 4003:, where φ( 2847:line graph 2843:isomorphic 2559:symmetries 2350: |. 2307:such that 2285:transitive 1831:The group 1512:The group 881:of length 861: |. 785:Definition 93:cycle type 73:of π is a 63:partitions 59:finite set 29:polynomial 7679:, pg. 473 7442:… 7352:∑ 7282:… 7196:∑ 7046:… 6945:− 6900:∑ 6833:− 6806:− 6776:− 6754:− 6743:− 6711:∑ 6641:∏ 6625:∈ 6618:∑ 6541:− 6490:− 6455:− 6444:− 6402:≤ 6396:≤ 6270:≥ 6263:∑ 6254:⁡ 6185:⁡ 6174:≥ 6167:∏ 6027:⁡ 6016:≥ 6009:∏ 5919:≥ 5905:∑ 5896:≥ 5889:∏ 5785:∏ 5757:⋯ 5708:∑ 5699:≥ 5692:∑ 5651:≥ 5644:∑ 5524:∏ 5467:∏ 5409:∏ 5359:∏ 5180:− 5168:… 5021:∏ 4967:∏ 4933:⋯ 4884:∑ 4693:∏ 4639:∏ 4631:⋯ 4594:− 4555:⋯ 4506:∑ 4373:− 4289:− 4109:φ 4092:∑ 3992:for each 1599:= {1,4}, 1595:= {3,4}, 1591:= {2,3}, 1587:= {1,2}, 1543:} (where 1335:rotations 1234:∏ 1225:∈ 1218:∑ 1068:∏ 1036:∈ 1029:∏ 949:∑ 938:⌋ 924:⌊ 921:≤ 899:≤ 674:∏ 223:into Sym( 157:bijective 48:algebraic 7547:) where 7515:. Thus, 7112:#Example 6381:, where 4048:, thus: 3971:regular 3462:parallel 2553:with an 2025:identity 1583:} where 1559:is now { 1339:identity 885:, where 864:Now let 645: ( 632: ( 189:subgroup 75:monomial 7652:product 7543:, ..., 7325:b) The 7169:a) The 3994:divisor 2317:regular 1655:A B C D 1317:in the 1301:Example 1145:, ..., 286:kernels 219:φ from 215:with a 191:of Sym( 7885:  7867:  7846:  7828:  7806:  7788:  7146:orbits 7126:. Let 2620:Three 2328:finite 1884:(with 1384:, and 1315:square 211:be an 201:degree 133:action 108:. The 69:; the 67:cycles 7593:Notes 7110:(see 3987:order 2346:| = | 1886:loops 1854:) → ( 1535:} → { 1313:of a 1165:) of 817:order 793:of a 578:dummy 229:image 129:group 38:on a 27:is a 7883:ISBN 7865:ISBN 7844:ISBN 7826:ISBN 7804:ISBN 7786:ISBN 7479:and 7471:Let 7329:for 7173:for 7135:and 7082:Let 4172:The 4036:has 3975:-gon 3401:cube 3227:is: 3208:Six 2291:and 1653:), ( 1637:), ( 789:The 594:and 231:, φ( 36:acts 7932:doi 7928:263 7551:= | 7527:to 7511:to 7495:in 7487:to 7319:and 7148:of 6856:or 6251:exp 6182:exp 6024:exp 4019:to 3999:of 3677:is 3220:of 2926:). 2841:is 2716:is 2568:of 2303:in 2295:in 2283:is 2113:132 2101:123 1659:E F 1643:B D 1639:A C 1309:of 830:in 804:in 542:456 257:of 199:of 179:of 131:'s 40:set 16:In 7968:: 7953:. 7949:. 7926:. 7922:. 7589:. 7566:. 7539:, 7535:; 7499:, 7159:= 7122:≤ 7090:. 6109:: 5079:: 4822:. 3960:, 3956:A 3708:24 3258:24 2326:A 2311:= 2125:13 2089:12 2077:23 2031:. 1948:16 1866:, 1858:, 1681:)( 1677:)( 1673:)( 1669:)( 1665:)( 1657:)( 1649:)( 1645:)( 1641:)( 1630:)( 1579:, 1575:, 1571:, 1567:, 1563:, 1539:, 1377:, 1370:, 1154:. 1138:, 808:. 781:. 587:, 573:. 524:12 155:A 147:. 120:. 84:, 54:. 23:a 7957:. 7955:1 7940:. 7934:: 7698:X 7694:G 7690:G 7553:Y 7549:b 7545:b 7541:b 7537:b 7533:G 7529:Y 7525:X 7521:Y 7517:G 7513:Y 7509:X 7505:x 7503:( 7501:h 7497:G 7493:g 7489:Y 7485:X 7481:h 7477:X 7473:G 7454:. 7451:) 7448:1 7445:, 7439:, 7436:1 7433:, 7430:1 7427:, 7424:t 7421:+ 7418:1 7415:; 7412:G 7409:( 7406:Z 7403:= 7400:! 7397:k 7393:/ 7387:k 7383:t 7377:k 7373:F 7367:n 7362:0 7359:= 7356:k 7335:k 7331:F 7307:, 7304:) 7299:n 7295:t 7291:+ 7288:1 7285:, 7279:, 7274:2 7270:t 7266:+ 7263:1 7260:, 7257:t 7254:+ 7251:1 7248:; 7245:G 7242:( 7239:Z 7236:= 7231:k 7227:t 7221:k 7217:f 7211:n 7206:0 7203:= 7200:k 7179:k 7175:f 7164:0 7161:F 7157:0 7154:f 7150:G 7141:k 7137:F 7132:k 7128:f 7124:n 7120:k 7116:k 7108:X 7104:k 7100:X 7096:k 7092:G 7088:X 7084:G 7065:. 7062:) 7057:n 7053:a 7049:, 7043:, 7038:2 7034:a 7030:, 7025:1 7021:a 7017:; 7014:G 7011:( 7008:Z 7005:= 7002:) 6999:G 6996:( 6993:Z 6978:G 6956:. 6953:) 6948:l 6942:n 6938:S 6934:( 6931:Z 6925:l 6921:a 6915:n 6910:1 6907:= 6904:l 6894:n 6891:1 6886:= 6883:) 6878:n 6874:S 6870:( 6867:Z 6841:) 6836:l 6830:n 6826:S 6822:( 6819:Z 6815:! 6812:) 6809:l 6803:n 6800:( 6794:l 6790:a 6785:! 6782:) 6779:1 6773:l 6770:( 6763:) 6757:1 6751:l 6746:1 6740:n 6734:( 6726:n 6721:1 6718:= 6715:l 6704:! 6701:n 6697:1 6692:= 6687:) 6684:g 6681:( 6676:k 6672:j 6666:k 6662:a 6656:n 6651:1 6648:= 6645:k 6633:n 6629:S 6622:g 6611:! 6608:n 6604:1 6599:= 6596:) 6591:n 6587:S 6583:( 6580:Z 6550:! 6547:) 6544:1 6538:l 6535:( 6532:= 6527:l 6523:! 6520:l 6493:1 6487:l 6464:) 6458:1 6452:l 6447:1 6441:n 6435:( 6408:. 6405:n 6399:l 6393:1 6379:n 6375:l 6361:1 6358:= 6355:) 6350:0 6346:S 6342:( 6339:Z 6312:. 6308:) 6302:k 6296:k 6292:y 6286:k 6282:a 6273:1 6267:k 6258:( 6248:] 6243:n 6239:y 6235:[ 6232:= 6221:) 6216:k 6210:k 6206:y 6200:k 6196:a 6189:( 6177:1 6171:k 6163:] 6158:n 6154:y 6150:[ 6147:= 6140:) 6135:n 6131:S 6127:( 6124:Z 6095:n 6091:S 6067:, 6063:) 6058:k 6052:k 6048:y 6042:k 6038:a 6031:( 6019:1 6013:k 6005:= 5999:! 5994:k 5990:j 5982:k 5978:j 5973:k 5963:k 5959:j 5954:) 5948:k 5944:y 5938:k 5934:a 5930:( 5922:0 5914:k 5910:j 5899:1 5893:k 5885:= 5879:! 5874:k 5870:j 5862:k 5858:j 5853:k 5843:k 5839:j 5835:k 5831:y 5823:k 5819:j 5813:k 5809:a 5800:n 5795:1 5792:= 5789:k 5779:n 5776:= 5771:n 5767:j 5763:n 5760:+ 5754:+ 5749:3 5745:j 5741:3 5738:+ 5733:2 5729:j 5725:2 5722:+ 5717:1 5713:j 5702:1 5696:n 5688:= 5685:) 5680:n 5676:S 5672:( 5669:Z 5664:n 5660:y 5654:1 5648:n 5620:y 5600:n 5577:. 5571:! 5566:k 5562:j 5554:k 5550:j 5545:k 5539:n 5534:1 5531:= 5528:k 5518:! 5515:n 5509:= 5503:! 5498:k 5494:j 5489:1 5482:n 5477:1 5474:= 5471:k 5459:k 5455:j 5449:) 5444:k 5440:! 5437:k 5431:( 5424:n 5419:1 5416:= 5413:k 5398:k 5394:j 5389:) 5385:! 5382:k 5379:( 5374:n 5369:1 5366:= 5363:k 5353:! 5350:n 5320:k 5316:j 5311:S 5300:k 5286:k 5282:/ 5278:! 5275:k 5265:k 5249:k 5245:j 5234:n 5217:. 5211:! 5208:n 5203:) 5198:n 5194:a 5189:! 5186:) 5183:1 5177:n 5174:( 5171:, 5165:, 5160:2 5156:a 5151:! 5148:1 5145:, 5140:1 5136:a 5131:! 5128:0 5125:( 5120:n 5116:B 5109:= 5106:) 5101:n 5097:S 5093:( 5090:Z 5056:k 5052:j 5046:k 5042:a 5036:n 5031:1 5028:= 5025:k 5014:! 5009:k 5005:j 4997:k 4993:j 4988:k 4982:n 4977:1 4974:= 4971:k 4962:1 4955:n 4952:= 4947:n 4943:j 4939:n 4936:+ 4930:+ 4925:3 4921:j 4917:3 4914:+ 4909:2 4905:j 4901:2 4898:+ 4893:1 4889:j 4880:= 4877:) 4872:n 4868:S 4864:( 4861:Z 4847:n 4843:S 4832:n 4828:S 4807:! 4804:n 4800:2 4795:= 4788:| 4782:n 4778:A 4773:| 4768:1 4735:. 4728:k 4724:j 4718:k 4714:a 4708:n 4703:1 4700:= 4697:k 4686:! 4681:k 4677:j 4669:k 4665:j 4660:k 4654:n 4649:1 4646:= 4643:k 4628:+ 4623:4 4619:j 4615:+ 4610:2 4606:j 4601:) 4597:1 4591:( 4588:+ 4585:1 4577:n 4574:= 4569:n 4565:j 4561:n 4558:+ 4552:+ 4547:3 4543:j 4539:3 4536:+ 4531:2 4527:j 4523:2 4520:+ 4515:1 4511:j 4502:= 4499:) 4494:n 4490:A 4486:( 4483:Z 4463:n 4460:A 4428:n 4423:, 4419:) 4413:2 4409:/ 4405:n 4400:2 4396:a 4392:+ 4387:2 4383:/ 4379:) 4376:2 4370:n 4367:( 4362:2 4358:a 4352:2 4347:1 4343:a 4338:( 4332:4 4329:1 4313:n 4308:, 4303:2 4299:/ 4295:) 4292:1 4286:n 4283:( 4278:2 4274:a 4268:1 4264:a 4258:2 4255:1 4247:{ 4242:+ 4239:) 4234:n 4230:C 4226:( 4223:Z 4218:2 4215:1 4210:= 4207:) 4202:n 4198:D 4194:( 4191:Z 4166:n 4162:D 4144:. 4139:d 4135:/ 4131:n 4126:d 4122:a 4118:) 4115:d 4112:( 4104:n 4100:| 4096:d 4086:n 4083:1 4078:= 4075:) 4070:n 4066:C 4062:( 4059:Z 4046:d 4042:d 4040:/ 4038:n 4034:d 4029:n 4025:C 4021:d 4013:d 4005:d 4001:n 3997:d 3990:d 3983:d 3979:n 3973:n 3966:n 3962:C 3950:n 3946:C 3928:. 3923:n 3918:1 3914:a 3910:= 3907:) 3902:n 3898:E 3894:( 3891:Z 3874:n 3870:E 3847:. 3843:) 3837:3 3832:2 3828:a 3824:6 3821:+ 3816:2 3811:3 3807:a 3803:8 3800:+ 3795:2 3790:2 3786:a 3780:2 3775:1 3771:a 3767:3 3764:+ 3759:4 3755:a 3749:2 3744:1 3740:a 3736:6 3733:+ 3728:6 3723:1 3719:a 3714:( 3705:1 3700:= 3697:) 3694:C 3691:( 3688:Z 3675:C 3658:. 3653:3 3648:2 3644:a 3640:6 3610:. 3605:2 3600:3 3596:a 3592:8 3562:. 3557:2 3552:2 3548:a 3542:2 3537:1 3533:a 3529:3 3500:. 3495:4 3491:a 3485:2 3480:1 3476:a 3472:6 3439:. 3434:6 3429:1 3425:a 3405:C 3371:. 3367:) 3361:4 3357:a 3351:2 3347:a 3343:6 3340:+ 3335:2 3330:3 3326:a 3322:8 3319:+ 3314:2 3309:2 3305:a 3299:2 3294:1 3290:a 3286:9 3283:+ 3278:6 3273:1 3269:a 3264:( 3255:1 3250:= 3247:) 3244:G 3241:( 3238:Z 3225:4 3222:K 3218:G 3173:. 3168:4 3164:a 3158:2 3154:a 3150:6 3128:. 3123:2 3118:2 3114:a 3108:2 3103:1 3099:a 3095:3 3072:. 3067:2 3062:3 3058:a 3054:8 3031:. 3026:2 3021:2 3017:a 3011:2 3006:1 3002:a 2998:6 2975:. 2970:6 2965:1 2961:a 2946:4 2943:S 2939:4 2936:S 2914:n 2891:) 2886:2 2883:n 2878:( 2865:3 2862:S 2860:( 2858:Z 2854:3 2851:S 2839:3 2836:K 2819:. 2815:) 2809:3 2805:a 2801:2 2798:+ 2793:2 2789:a 2783:1 2779:a 2775:3 2772:+ 2767:3 2762:1 2758:a 2753:( 2747:6 2744:1 2739:= 2736:) 2733:G 2730:( 2727:Z 2714:3 2711:S 2707:G 2690:. 2685:3 2681:a 2677:2 2655:. 2650:2 2646:a 2640:1 2636:a 2632:3 2606:. 2601:3 2596:1 2592:a 2577:3 2574:S 2572:( 2566:3 2563:S 2551:3 2548:K 2518:. 2514:) 2508:6 2504:a 2500:2 2497:+ 2492:2 2487:3 2483:a 2479:2 2476:+ 2471:3 2466:2 2462:a 2458:+ 2453:6 2448:1 2444:a 2439:( 2433:6 2430:1 2425:= 2422:) 2417:6 2413:C 2409:( 2406:Z 2366:6 2363:C 2348:X 2344:G 2342:| 2336:X 2332:G 2313:x 2309:y 2305:G 2301:g 2297:X 2293:y 2289:x 2281:X 2277:G 2258:. 2254:) 2248:3 2244:a 2240:2 2237:+ 2232:2 2228:a 2222:1 2218:a 2214:3 2211:+ 2206:3 2201:1 2197:a 2192:( 2186:6 2183:1 2178:= 2175:) 2170:3 2166:S 2162:( 2159:Z 2131:} 2128:) 2122:( 2119:, 2116:) 2110:( 2107:, 2104:) 2098:( 2095:, 2092:) 2086:( 2083:, 2080:) 2074:( 2071:, 2068:e 2065:{ 2062:= 2057:3 2053:S 2039:3 2036:S 1997:. 1993:) 1987:4 1982:4 1978:a 1974:2 1971:+ 1966:8 1961:2 1957:a 1953:+ 1943:1 1939:a 1934:( 1928:4 1925:1 1920:= 1917:) 1912:4 1908:C 1904:( 1901:Z 1882:4 1879:D 1872:X 1868:x 1864:x 1860:y 1856:x 1852:y 1850:, 1848:x 1844:g 1840:X 1836:4 1833:C 1814:. 1810:) 1804:4 1800:a 1794:2 1790:a 1786:2 1783:+ 1778:2 1773:2 1769:a 1763:2 1758:1 1754:a 1750:+ 1745:6 1740:1 1736:a 1731:( 1725:4 1722:1 1717:= 1714:) 1709:4 1705:C 1701:( 1698:Z 1683:F 1679:E 1675:D 1671:C 1667:B 1663:A 1651:F 1647:E 1635:F 1632:E 1628:B 1625:C 1622:D 1619:A 1615:4 1612:K 1605:F 1601:E 1597:D 1593:C 1589:B 1585:A 1581:F 1577:E 1573:D 1569:C 1565:B 1561:A 1557:X 1553:g 1549:x 1545:x 1541:y 1537:x 1533:y 1531:, 1529:x 1525:g 1521:X 1517:4 1514:C 1495:. 1491:) 1485:4 1481:a 1477:2 1474:+ 1469:2 1464:2 1460:a 1456:+ 1451:4 1446:1 1442:a 1437:( 1431:4 1428:1 1423:= 1420:) 1415:4 1411:C 1407:( 1404:Z 1389:1 1386:a 1382:4 1379:a 1375:2 1372:a 1368:4 1365:a 1357:4 1354:C 1347:G 1343:G 1331:G 1327:X 1323:G 1307:G 1285:. 1280:) 1277:g 1274:( 1269:k 1265:j 1259:k 1255:a 1249:n 1244:1 1241:= 1238:k 1228:G 1222:g 1210:| 1206:G 1202:| 1197:1 1192:= 1189:) 1186:G 1183:( 1180:Z 1167:G 1163:G 1161:( 1159:Z 1151:n 1147:a 1143:2 1140:a 1136:1 1133:a 1114:) 1111:g 1108:( 1103:k 1099:j 1093:k 1089:a 1083:n 1078:1 1075:= 1072:k 1064:= 1058:| 1054:c 1050:| 1045:a 1039:g 1033:c 1015:g 998:. 995:n 992:= 989:) 986:g 983:( 978:k 974:j 969:k 964:n 959:1 956:= 953:k 935:k 931:/ 927:n 918:) 915:g 912:( 907:k 903:j 896:0 883:k 879:g 875:g 873:( 870:k 866:j 859:c 855:c 851:3 848:c 845:2 842:c 839:1 836:c 832:G 828:g 824:n 820:m 813:G 806:G 802:g 798:G 779:4 776:a 773:2 770:a 767:1 764:a 760:3 757:a 754:2 751:a 748:1 745:a 741:g 720:) 717:g 714:( 709:k 705:j 699:k 695:a 689:n 684:1 681:= 678:k 655:g 651:i 647:g 642:i 638:j 634:g 629:i 625:j 620:i 616:a 612:k 607:k 603:a 599:3 596:a 592:2 589:a 585:1 582:a 571:X 567:X 548:. 545:) 539:( 536:) 533:3 530:( 527:) 521:( 518:= 514:) 507:4 502:6 497:5 492:3 487:1 482:2 475:6 470:5 465:4 460:3 455:2 450:1 443:( 403:X 399:X 379:) 372:1 367:5 362:4 357:3 352:2 345:5 340:4 335:3 330:2 325:1 318:( 302:n 298:X 282:G 278:X 274:X 270:X 266:G 259:G 245:G 241:X 237:G 233:G 225:X 221:G 209:G 205:X 203:| 193:X 185:X 181:X 169:X 165:X 161:X 106:i 101:i 97:a 89:2 86:a 82:1 79:a

Index

combinatorial
mathematics
polynomial
group of permutations
acts
set
coefficients
algebraic
combinatorial enumeration
finite set
partitions
cycles
monomial
cycle type
equivalence classes
group
action
Pólya enumeration theorem
differential
species theory
bijective
composition
symmetric group
subgroup
permutation group
abstract group
group homomorphism
image
group action
permutation representation

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