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Talk:Blancmange curve

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But here the word "representation" is being used in a different way that I don't understand, referring to the assertion that the representation is "4-dimensional" and has a given "basis" These words suggest that some vector space is being considered here.
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Does anyone happen to know what the fractal dimension of this function is? It's not listed anywhere on the Internet, but a quick box-counting estimate gives 1.03037, which suggests it could well actually be 1, at least for w=1/2.
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I don't think that Hurst parameter should redirect to this page. I was going to add a link from the page on fractional Brownian motion, but this page is no more about the Hurst parameter than that page is.
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I reduced the section "differentiability", that contained wrong and unclear statements. However it may be expanded again hopefully. A more complete exposition should give the modulus of continuity of
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Previously that article was discussing "representations" of the Blancmange curve or its integral via various infinite series.
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This integral is also self-similar on the unit interval, under an action of the dyadic monoid described in the section
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in that n-dimensional space. In this article, its not actually a group, but a monoid, but the same ideas apply.
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on Knowledge. If you would like to participate, please visit the project page, where you can join
89: 73: 52: 787: 629:{\displaystyle (x)=I_{w}\left({\frac {x}{2}}\right)={\frac {x^{2}}{8}}+{\frac {w}{2}}I_{w}(x)} 406: 387: 1112:. That is, given ANY 4-D vector (a,b,c,d) one has the corresponding vector representation 762: 355: 323: 211: 659:
much, much, much clearer explanation of what "dimension" and "basis" are about would be
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on the interval ). Also, a more precise statement about the differentiability for
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1/2 ( Hölder, I guess) and if possible, the exact value of the total variation of
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of "things" having some symmetry, one generally identifies that symmetry as a
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A basis for an n-dimensional vector space is commonly written as
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Nowhere Differentiable Functions: The Monsters of Analysis
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Would someone like to write a real Hurst parameter page?
1300:{\displaystyle g:(a,b,c,d)\mapsto (a,b/2,c/4+d/8,wd/2)} 1192: 1118: 1000: 940: 869: 795: 765: 743:-dimensional space, whenever one can find an integer 703: 511: 443: 358: 326: 101:, a collaborative effort to improve the coverage of 1299: 1174: 1104: 986: 926: 838: 778: 724: 628: 489: 371: 339: 497:. Re-writing the above to make the action of 1186:as the matrix given in the article, which is 8: 1099: 1059: 1053: 1001: 981: 941: 921: 870: 484: 444: 206:, which collaborates on articles related to 19: 152: 47: 1286: 1269: 1255: 1241: 1191: 1157: 1141: 1117: 1078: 1047: 1034: 1021: 1008: 999: 960: 939: 927:{\displaystyle \{e_{1},e_{2},...,e_{n}\}} 915: 890: 877: 868: 818: 794: 770: 764: 702: 611: 597: 583: 577: 560: 550: 525: 510: 501:more clear: on the unit interval, one has 463: 442: 363: 357: 331: 325: 663:for this passage to be comprehensible. 154: 49: 650:what vector space is being referred to 1175:{\displaystyle a+bx+cx^{2}+dI_{w}(x)} 665:2601:200:C000:1A0:211A:BDC0:4259:59DA 402:, by Marek Jarnicki and Peter Pflug. 7: 433: 262:This article is within the field of 200:This article is within the scope of 95:This article is within the scope of 747:and a collection of n x n matrices 38:It is of interest to the following 987:{\displaystyle \{1,x,x^{2},I(x)\}} 751:such that, for each group element 490:{\displaystyle \{1,x,x^{2},I(x)\}} 14: 1337:Low-priority mathematics articles 1182:and this vector transforms under 115:Knowledge:WikiProject Mathematics 1352:Systems articles in chaos theory 1332:Start-Class mathematics articles 424:Integrating the Blancmange curve 187: 177: 156: 118:Template:WikiProject Mathematics 82: 72: 51: 20: 1347:Low-importance Systems articles 839:{\displaystyle R(gx)=M_{g}R(x)} 240:This article has been rated as 135:This article has been rated as 1294: 1229: 1226: 1223: 1199: 1169: 1163: 1096: 1090: 1056: 978: 972: 833: 827: 808: 799: 732:. Such actions can be given a 713: 623: 617: 540: 534: 531: 512: 481: 475: 398:A useful reference should be: 1: 1317:04:16, 27 December 2023 (UTC) 725:{\displaystyle g:x\mapsto gx} 393:16:28, 28 December 2018 (UTC) 311:13:25, 10 February 2007 (UTC) 220:Knowledge:WikiProject Systems 109:and see a list of open tasks. 1357:WikiProject Systems articles 1342:Start-Class Systems articles 412:09:58, 18 January 2019 (UTC) 223:Template:WikiProject Systems 854:corresponds to some vector 648:, it it necessary to state 1373: 246:project's importance scale 673:14:28, 12 July 2022 (UTC) 296:23:34, 19 June 2006 (UTC) 261: 239: 172: 134: 67: 46: 383:≥ 1/2 is still lacking. 141:project's priority scale 426:contains this passage: 98:WikiProject Mathematics 1301: 1176: 1106: 988: 928: 840: 780: 726: 630: 491: 373: 341: 258: 195:Systems science portal 28:This article is rated 1302: 1177: 1107: 989: 929: 841: 786:such that there is a 781: 779:{\displaystyle M_{g}} 727: 655:Or if that is wrong, 631: 492: 374: 372:{\displaystyle T_{w}} 342: 340:{\displaystyle T_{w}} 257: 1190: 1116: 998: 938: 934:. The basis here is 867: 793: 763: 734:group representation 701: 509: 441: 356: 324: 121:mathematics articles 759:, one has a matrix 203:WikiProject Systems 1297: 1172: 1102: 984: 924: 836: 776: 722: 626: 487: 369: 337: 259: 90:Mathematics portal 34:content assessment 788:commuting diagram 678:Given some space 605: 592: 568: 316:Differentiability 301:Fractal dimension 278: 277: 274: 273: 270: 269: 151: 150: 147: 146: 1364: 1306: 1304: 1303: 1298: 1290: 1273: 1259: 1245: 1181: 1179: 1178: 1173: 1162: 1161: 1146: 1145: 1111: 1109: 1108: 1103: 1083: 1082: 1052: 1051: 1039: 1038: 1026: 1025: 1013: 1012: 993: 991: 990: 985: 965: 964: 933: 931: 930: 925: 920: 919: 895: 894: 882: 881: 845: 843: 842: 837: 823: 822: 785: 783: 782: 777: 775: 774: 731: 729: 728: 723: 635: 633: 632: 627: 616: 615: 606: 598: 593: 588: 587: 578: 573: 569: 561: 555: 554: 530: 529: 496: 494: 493: 488: 468: 467: 409: 390: 378: 376: 375: 370: 368: 367: 346: 344: 343: 338: 336: 335: 228: 227: 226:Systems articles 224: 221: 218: 197: 192: 191: 190: 181: 174: 173: 168: 160: 153: 123: 122: 119: 116: 113: 92: 87: 86: 76: 69: 68: 63: 55: 48: 31: 25: 24: 16: 1372: 1371: 1367: 1366: 1365: 1363: 1362: 1361: 1322: 1321: 1188: 1187: 1153: 1137: 1114: 1113: 1074: 1043: 1030: 1017: 1004: 996: 995: 956: 936: 935: 911: 886: 873: 865: 864: 814: 791: 790: 766: 761: 760: 699: 698: 607: 579: 556: 546: 521: 507: 506: 459: 439: 438: 434:Self similarity 420: 418:Unclear passage 407: 388: 359: 354: 353: 327: 322: 321: 318: 303: 283: 281:Hurst parameter 225: 222: 219: 216: 215: 212:systems science 193: 188: 186: 166: 120: 117: 114: 111: 110: 88: 81: 61: 32:on Knowledge's 29: 12: 11: 5: 1370: 1368: 1360: 1359: 1354: 1349: 1344: 1339: 1334: 1324: 1323: 1320: 1319: 1296: 1293: 1289: 1285: 1282: 1279: 1276: 1272: 1268: 1265: 1262: 1258: 1254: 1251: 1248: 1244: 1240: 1237: 1234: 1231: 1228: 1225: 1222: 1219: 1216: 1213: 1210: 1207: 1204: 1201: 1198: 1195: 1171: 1168: 1165: 1160: 1156: 1152: 1149: 1144: 1140: 1136: 1133: 1130: 1127: 1124: 1121: 1101: 1098: 1095: 1092: 1089: 1086: 1081: 1077: 1073: 1070: 1067: 1064: 1061: 1058: 1055: 1050: 1046: 1042: 1037: 1033: 1029: 1024: 1020: 1016: 1011: 1007: 1003: 983: 980: 977: 974: 971: 968: 963: 959: 955: 952: 949: 946: 943: 923: 918: 914: 910: 907: 904: 901: 898: 893: 889: 885: 880: 876: 872: 860: 859: 835: 832: 829: 826: 821: 817: 813: 810: 807: 804: 801: 798: 773: 769: 721: 718: 715: 712: 709: 706: 684:symmetry group 638: 637: 625: 622: 619: 614: 610: 604: 601: 596: 591: 586: 582: 576: 572: 567: 564: 559: 553: 549: 545: 542: 539: 536: 533: 528: 524: 520: 517: 514: 486: 483: 480: 477: 474: 471: 466: 462: 458: 455: 452: 449: 446: 419: 416: 415: 414: 366: 362: 334: 330: 317: 314: 302: 299: 282: 279: 276: 275: 272: 271: 268: 267: 260: 250: 249: 242:Low-importance 238: 232: 231: 229: 199: 198: 182: 170: 169: 167:Low‑importance 161: 149: 148: 145: 144: 133: 127: 126: 124: 107:the discussion 94: 93: 77: 65: 64: 56: 44: 43: 37: 26: 13: 10: 9: 6: 4: 3: 2: 1369: 1358: 1355: 1353: 1350: 1348: 1345: 1343: 1340: 1338: 1335: 1333: 1330: 1329: 1327: 1318: 1314: 1310: 1291: 1287: 1283: 1280: 1277: 1274: 1270: 1266: 1263: 1260: 1256: 1252: 1249: 1246: 1242: 1238: 1235: 1232: 1220: 1217: 1214: 1211: 1208: 1205: 1202: 1196: 1193: 1185: 1166: 1158: 1154: 1150: 1147: 1142: 1138: 1134: 1131: 1128: 1125: 1122: 1119: 1093: 1087: 1084: 1079: 1075: 1071: 1068: 1065: 1062: 1048: 1044: 1040: 1035: 1031: 1027: 1022: 1018: 1014: 1009: 1005: 975: 969: 966: 961: 957: 953: 950: 947: 944: 916: 912: 908: 905: 902: 899: 896: 891: 887: 883: 878: 874: 862: 861: 857: 853: 849: 830: 824: 819: 815: 811: 805: 802: 796: 789: 771: 767: 758: 754: 750: 746: 742: 738: 735: 719: 716: 710: 707: 704: 696: 693: 690:of the group 689: 685: 681: 677: 676: 675: 674: 670: 666: 662: 658: 653: 651: 647: 641: 620: 612: 608: 602: 599: 594: 589: 584: 580: 574: 570: 565: 562: 557: 551: 547: 543: 537: 526: 522: 518: 515: 505: 504: 503: 502: 498: 478: 472: 469: 464: 460: 456: 453: 450: 447: 435: 432: 427: 425: 417: 413: 410: 405: 401: 397: 396: 395: 394: 391: 386: 382: 364: 360: 350: 332: 328: 315: 313: 312: 309: 300: 298: 297: 294: 290: 287: 280: 265: 256: 252: 251: 247: 243: 237: 234: 233: 230: 213: 209: 205: 204: 196: 185: 183: 180: 176: 175: 171: 165: 162: 159: 155: 142: 138: 132: 129: 128: 125: 108: 104: 100: 99: 91: 85: 80: 78: 75: 71: 70: 66: 60: 57: 54: 50: 45: 41: 35: 27: 23: 18: 17: 1309:67.198.37.16 1183: 855: 851: 847: 756: 752: 748: 744: 740: 736: 691: 687: 679: 660: 656: 654: 649: 645: 642: 639: 500: 436: 430: 428: 423: 422:The section 421: 380: 348: 319: 308:82.12.108.65 304: 291: 288: 284: 264:Chaos theory 241: 201: 137:Low-priority 136: 96: 62:Low‑priority 40:WikiProjects 994:, that is, 686:. Elements 112:Mathematics 103:mathematics 59:Mathematics 30:Start-class 1326:Categories 661:necessary 695:act on X 293:LachlanA 244:on the 217:Systems 208:systems 164:Systems 139:on the 36:scale. 646:If so 351:: --> 1313:talk 856:R(x) 669:talk 657:SOME 347:for 210:and 850:in 755:in 739:in 697:as 236:Low 131:Low 1328:: 1315:) 1227:↦ 1057:↦ 714:↦ 671:) 652:. 636:." 519:⋅ 499:g 404:pm 385:pm 1311:( 1295:) 1292:2 1288:/ 1284:d 1281:w 1278:, 1275:8 1271:/ 1267:d 1264:+ 1261:4 1257:/ 1253:c 1250:, 1247:2 1243:/ 1239:b 1236:, 1233:a 1230:( 1224:) 1221:d 1218:, 1215:c 1212:, 1209:b 1206:, 1203:a 1200:( 1197:: 1194:g 1184:g 1170:) 1167:x 1164:( 1159:w 1155:I 1151:d 1148:+ 1143:2 1139:x 1135:c 1132:+ 1129:x 1126:b 1123:+ 1120:a 1100:} 1097:) 1094:x 1091:( 1088:I 1085:, 1080:2 1076:x 1072:, 1069:x 1066:, 1063:1 1060:{ 1054:} 1049:4 1045:e 1041:, 1036:3 1032:e 1028:, 1023:2 1019:e 1015:, 1010:1 1006:e 1002:{ 982:} 979:) 976:x 973:( 970:I 967:, 962:2 958:x 954:, 951:x 948:, 945:1 942:{ 922:} 917:n 913:e 909:, 906:. 903:. 900:. 897:, 892:2 888:e 884:, 879:1 875:e 871:{ 852:X 848:x 834:) 831:x 828:( 825:R 820:g 816:M 812:= 809:) 806:x 803:g 800:( 797:R 772:g 768:M 757:G 753:g 749:M 745:n 741:n 737:R 720:x 717:g 711:x 708:: 705:g 692:G 688:g 680:X 667:( 624:) 621:x 618:( 613:w 609:I 603:2 600:w 595:+ 590:8 585:2 581:x 575:= 571:) 566:2 563:x 558:( 552:w 548:I 544:= 541:) 538:x 535:( 532:] 527:w 523:I 516:g 513:[ 485:} 482:) 479:x 476:( 473:I 470:, 465:2 461:x 457:, 454:x 451:, 448:1 445:{ 429:" 408:a 389:a 381:w 365:w 361:T 349:w 333:w 329:T 266:. 248:. 214:. 143:. 42::

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LachlanA
23:34, 19 June 2006 (UTC)
82.12.108.65
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pm
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