Knowledge

Cobweb plot

Source đź“ť

669: 33: 130: 138: 548:, while an unstable fixed point is the segment of the staircase with growing stairs or an outward spiral. It follows from the definition of a fixed point that the staircases converge whereas spirals center at a point where the diagonal y=x line crosses the function graph. A period 2 227: 526: 456: 395: 288: 346: 315: 253: 710: 181:. The technique was introduced in the 1890s by E.-M. LĂ©meray. Using a cobweb plot, it is possible to infer the long term status of an 645: 196: 97: 739: 69: 116: 76: 17: 703: 54: 83: 50: 464: 552:
is represented by a rectangle, while greater period cycles produce further, more complex closed loops. A
544:
corresponds to the segment of the staircase with progressively decreasing stair lengths or to an inward
65: 734: 696: 403: 729: 541: 133:
Construction of a cobweb plot of the logistic map y = 2.8 x (1-x), showing an attracting fixed point.
351: 43: 461:
Plot vertically from the point on the diagonal to the function curve. This has the coordinates (
571: 556:
orbit would show a 'filled out' area, indicating an infinite number of non-repeating values.
258: 676: 324: 293: 8: 400:
Plot horizontally across from this point to the diagonal line. This has the coordinates (
232: 90: 684: 641: 596: 182: 174: 633: 549: 166: 680: 723: 565: 553: 178: 146: 142: 637: 170: 668: 137: 129: 32: 574:– iterative algorithm to find fixed points (produces a cobweb plot) 545: 321:
Find the point on the function curve with an x-coordinate of
173:
to investigate the qualitative behaviour of one-dimensional
222:{\displaystyle f:\mathbb {R} \rightarrow \mathbb {R} } 467: 406: 354: 327: 296: 261: 235: 199: 57:. Unsourced material may be challenged and removed. 520: 450: 389: 340: 309: 282: 247: 221: 721: 632:] (in German). Birkhäuser Basel. p. 8. 597:"Sur la convergence des substitutions uniformes" 704: 604:Nouvelles annales de mathĂ©matiques, 3e sĂ©rie 626:Berechenbares Chaos in dynamischen Systemen 711: 697: 623: 215: 207: 149:behaviour for most values of r > 3.57. 117:Learn how and when to remove this message 624:Stoop, Ruedi; Steeb, Willi-Hans (2006). 136: 128: 619: 617: 594: 14: 722: 185:under repeated application of a map. 663: 614: 521:{\displaystyle f(x_{0}),f(f(x_{0}))} 55:adding citations to reliable sources 26: 630:Computable Chaos in dynamic systems 290:. To plot the behaviour of a value 229:, the plot consists of a diagonal ( 24: 141:An animated cobweb diagram of the 25: 751: 658: 540:On the LĂ©meray diagram, a stable 535: 451:{\displaystyle f(x_{0}),f(x_{0})} 667: 255:) line and a curve representing 31: 531:Repeat from step 2 as required. 42:needs additional citations for 588: 515: 512: 499: 493: 484: 471: 445: 432: 423: 410: 390:{\displaystyle x_{0},f(x_{0})} 384: 371: 277: 271: 211: 193:For a given iterated function 13: 1: 581: 317:, apply the following steps. 165:is a visual tool used in the 683:. You can help Knowledge by 568:– similar plotting technique 348:. This has the coordinates ( 7: 559: 10: 756: 740:Mathematical physics stubs 662: 188: 595:LĂ©meray, E.-M. (1897). 145:y = r x (1-x), showing 679:-related article is a 522: 452: 391: 342: 311: 284: 283:{\displaystyle y=f(x)} 249: 223: 150: 134: 638:10.1007/3-7643-7551-5 572:Fixed-point iteration 523: 453: 392: 343: 341:{\displaystyle x_{0}} 312: 310:{\displaystyle x_{0}} 285: 250: 224: 140: 132: 677:mathematical physics 465: 404: 352: 325: 294: 259: 233: 197: 51:improve this article 248:{\displaystyle x=y} 518: 448: 387: 338: 307: 280: 245: 219: 175:iterated functions 151: 135: 735:Dynamical systems 692: 691: 647:978-3-7643-7551-5 183:initial condition 167:dynamical systems 127: 126: 119: 101: 16:(Redirected from 747: 730:Plots (graphics) 713: 706: 699: 671: 664: 652: 651: 621: 612: 611: 601: 592: 527: 525: 524: 519: 511: 510: 483: 482: 457: 455: 454: 449: 444: 443: 422: 421: 396: 394: 393: 388: 383: 382: 364: 363: 347: 345: 344: 339: 337: 336: 316: 314: 313: 308: 306: 305: 289: 287: 286: 281: 254: 252: 251: 246: 228: 226: 225: 220: 218: 210: 163:Verhulst diagram 157:, known also as 122: 115: 111: 108: 102: 100: 59: 35: 27: 21: 18:Verhulst diagram 755: 754: 750: 749: 748: 746: 745: 744: 720: 719: 718: 717: 661: 656: 655: 648: 622: 615: 599: 593: 589: 584: 578: 562: 538: 506: 502: 478: 474: 466: 463: 462: 439: 435: 417: 413: 405: 402: 401: 378: 374: 359: 355: 353: 350: 349: 332: 328: 326: 323: 322: 301: 297: 295: 292: 291: 260: 257: 256: 234: 231: 230: 214: 206: 198: 195: 194: 191: 159:LĂ©meray Diagram 123: 112: 106: 103: 60: 58: 48: 36: 23: 22: 15: 12: 11: 5: 753: 743: 742: 737: 732: 716: 715: 708: 701: 693: 690: 689: 672: 660: 659:External links 657: 654: 653: 646: 613: 586: 585: 583: 580: 576: 575: 569: 561: 558: 537: 536:Interpretation 534: 533: 532: 529: 517: 514: 509: 505: 501: 498: 495: 492: 489: 486: 481: 477: 473: 470: 459: 447: 442: 438: 434: 431: 428: 425: 420: 416: 412: 409: 398: 386: 381: 377: 373: 370: 367: 362: 358: 335: 331: 304: 300: 279: 276: 273: 270: 267: 264: 244: 241: 238: 217: 213: 209: 205: 202: 190: 187: 177:, such as the 125: 124: 39: 37: 30: 9: 6: 4: 3: 2: 752: 741: 738: 736: 733: 731: 728: 727: 725: 714: 709: 707: 702: 700: 695: 694: 688: 686: 682: 678: 673: 670: 666: 665: 649: 643: 639: 635: 631: 627: 620: 618: 609: 605: 598: 591: 587: 579: 573: 570: 567: 566:Jones diagram 564: 563: 557: 555: 551: 547: 543: 530: 507: 503: 496: 490: 487: 479: 475: 468: 460: 440: 436: 429: 426: 418: 414: 407: 399: 379: 375: 368: 365: 360: 356: 333: 329: 320: 319: 318: 302: 298: 274: 268: 265: 262: 242: 239: 236: 203: 200: 186: 184: 180: 176: 172: 168: 164: 160: 156: 148: 144: 139: 131: 121: 118: 110: 99: 96: 92: 89: 85: 82: 78: 75: 71: 68: â€“  67: 66:"Cobweb plot" 63: 62:Find sources: 56: 52: 46: 45: 40:This article 38: 34: 29: 28: 19: 685:expanding it 674: 629: 625: 607: 603: 590: 577: 539: 192: 179:logistic map 162: 158: 154: 152: 143:logistic map 113: 104: 94: 87: 80: 73: 61: 49:Please help 44:verification 41: 542:fixed point 171:mathematics 155:cobweb plot 107:August 2014 724:Categories 610:: 306–319. 582:References 77:newspapers 212:→ 169:field of 560:See also 554:chaotic 147:chaotic 91:scholar 644:  546:spiral 189:Method 93:  86:  79:  72:  64:  675:This 628:[ 600:(PDF) 550:orbit 98:JSTOR 84:books 681:stub 642:ISBN 70:news 634:doi 161:or 53:by 726:: 640:. 616:^ 608:16 606:. 602:. 528:). 458:). 397:). 153:A 712:e 705:t 698:v 687:. 650:. 636:: 516:) 513:) 508:0 504:x 500:( 497:f 494:( 491:f 488:, 485:) 480:0 476:x 472:( 469:f 446:) 441:0 437:x 433:( 430:f 427:, 424:) 419:0 415:x 411:( 408:f 385:) 380:0 376:x 372:( 369:f 366:, 361:0 357:x 334:0 330:x 303:0 299:x 278:) 275:x 272:( 269:f 266:= 263:y 243:y 240:= 237:x 216:R 208:R 204:: 201:f 120:) 114:( 109:) 105:( 95:· 88:· 81:· 74:· 47:. 20:)

Index

Verhulst diagram

verification
improve this article
adding citations to reliable sources
"Cobweb plot"
news
newspapers
books
scholar
JSTOR
Learn how and when to remove this message


logistic map
chaotic
dynamical systems
mathematics
iterated functions
logistic map
initial condition
fixed point
spiral
orbit
chaotic
Jones diagram
Fixed-point iteration
"Sur la convergence des substitutions uniformes"

Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.

↑