Knowledge

Talk:Möbius strip

Source 📝

1367:
surface, assuming that the gluing is performed in the 3D space, rather than through some topological magic (sorry, I am not an expert in this field and lack the right terminology; my judgements are restricted to common sense intuition). Note that the article about the umbilic torus doesn't establish any relation of it with the Möbius strip (the link in the "See also" section doesn't count as such). I think that the misleading sentence has to be either removed or reformulated in a less confusing way and a more detailed explanation can be provided in the article about umbilic torus.
786: 474: 464: 443: 1405:. My feeling was that something was wrong with it. A Möbius strip is single-sided whereas the Umbilic torus apparently has inside and outside. Now thinking about it more carefully, I guess that I found the flaw in your reasoning. The fact that the boundary goes three times around the center of the torus doesn't mean that the strip makes three half-twists. Actually it only makes a full twist (two half-twists). Hence it is not topologically equivalent to a Möbius strip. 1117:
the main point of a movie about this character, then maybe it could be listed among other fictional works with Möbius-strip plotlines. Or if your links' theory that this is another example of the bullshit "Möbius strips are things we don't understand therefore they could cause time loops" trope turns out to be validated, then maybe it could be mentioned, briefly, in the sentence with three examples of this trope. But the current Knowledge article
555: 917: 21: 1122:
to which the idea of a Möbius strip has had a significant influence (fine art, design, literature, etc). A name of a character in a movie franchise is not a significant influence to a wide area of popular culture. We already have plenty of examples of movies where the strip plays a much more significant role in the overall structure of the movie and not just in the names or behavior of one its characters. —
412: 1001: 381: 126: 877: 750: 1204:
couldn't find anything, which is a crude way of going about things, but I'd find it highly unlikely that someone would evaluate the area analytically and not put a numerical value to it. So I suspect it's not been properly investigated, and I doubt there's a closed form. For posterity, the integral is
1382:
You are confusing the standard embedding of the Möbius strip (with one half-twist) with the Möbius strip itself (a topological surface independent of how it is embedded into space). If you perform any odd number of half-twists to a strip before gluing it back to itself, you get a Möbius strip, with a
1121:
contains no content that would make a significant enough connection to this article to link to. The popular culture section is not intended as a catch-all listing of anything vaguely related (go to tvtropes for that sort of thing), but as an organized survey of different wide areas of popular culture
1116:
I'm leaning towards no. If the connection is only to the misspelled name "Mobius", no. If we have in-depth published reliable sources specifically connecting this character's plot line to the Möbius strip itself, and not just fan speculation which some of your sources look like, and this plot line is
1366:
The link to "Umbilic torus" in the "See also" section is accompanied with a claim that the Umbilic torus can be obtained from a Möbius strip by gluing the latter along its single edge. IMHO, that statement is false, at least in regular 3D space, where the result would have to be a self-intersecting
1004:
Article has achieved Good Article status. No issues of copyvio or plagiarism. All sources appear reliable. QPQ is done. Hooks are interesting and sourced. Are there any other images you would like to include in the nomination? There are some cool ones in commons, but I guess new hooks would have to
1203:
Interesting. Numerically (from their formula) it's ≈6.62715 for a fairly natural choice of dimensions, namely a strip width of 1 unit rotating while following a circle of radius 1, indeed slightly greater than Pappus's theorem's estimate of 2π. I searched for that constant (and approximations) and
1383:
different embedding for each different number of half-twists (see the second paragraph of the lead). The umbilic torus has a boundary that, if you cut along the ridges, is a Möbius strip. It is a Möbius strip embedded with three half-twists rather than one, but that is still a Möbius strip. —
1419:
Ok, this time I think you may be correct. If it really were a Möbius strip then (regardless of number of twists) traveling around the boundary (without crossing any ridges) until you return to your start should take you to the inside, but it doesn't.
617:
Wouldn't that create two Möbius strips instead? Explanation caption for the image lists that it creates a Möbius strip with two tracks, and one non Möbius strip. In reality, this should create a two tracked Möbius strip and a separate Möbius strip.
1344: 1142:
It might be interesting to say what the area of the surface swept by a rotating line segment is. I don't know the answer, but I found a reference saying what the area isn't: it isn't what you would get by trying to apply
327: 1458: 973: 653:
As for ALT1 below. Aion is NOT holding a Möbius strip. Give me a break and take a better look. It is just a strip and the Romans perished (due to lead poisoning) before even inventing zero.
530: 321: 372: 1047:
Promoter comment: taking the recycling logo because I can image lots of people will be trying to work it out and surprised to learn because that logo is so commonplace.
733: 134: 660: 1207: 1468: 520: 253: 1097: 218: 1463: 496: 259: 785: 857: 151: 50: 32: 1453: 1154: 487: 448: 1448: 865: 342: 273: 204: 38: 309: 278: 194: 572: 568: 368: 364: 916: 876: 664: 248: 423: 692: 602: 239: 1144: 1089: 380: 359: 303: 581: 391: 1425: 1388: 1193: 1127: 1024: 987: 299: 109: 90: 1093: 1019:
I added three more for some of the other hooks. Not sure the mosaic one works at DYK thumbnail size though. —
1410: 1372: 283: 623: 1147:. The rotation makes it sweep out a bigger area than a non-rotating segment would. See the last line of: 349: 1406: 1368: 429: 144: 20: 858:
https://www.npr.org/sections/thesalt/2015/08/06/429437860/cut-your-bagel-the-mathematically-correct-way
473: 1085: 1081: 656: 619: 1421: 1384: 1189: 1123: 1020: 983: 335: 229: 125: 495:
on Knowledge. If you would like to participate, please visit the project page, where you can join
1171: 587: 479: 396: 244: 861: 749: 463: 442: 315: 1052: 1038: 1010: 713: 638: 225: 42: 945: 866:
https://www.nytimes.com/2012/01/10/science/pasta-inspires-scientists-to-use-their-noodle.html
776: 1351: 1339:{\displaystyle \int _{0}^{2\pi }\int _{0}^{1}{\sqrt {(t/2)^{2}+(1+t\cos(s/2))^{2}}}\,dt\,ds} 1163: 1118: 1106: 1075: 761: 583: 554: 393: 161: 1181: 1178: 956: 934: 894: 850: 832: 806: 769: 198: 169: 1442: 677:
The following is an archived discussion of the DYK nomination of the article below.
1167: 1152:
Goodman, A. W.; Goodman, Gary (1969), "Generalizations of the theorems of Pappus",
1048: 1034: 1006: 790: 709: 634: 1033:
You are right, the mosaic wouldn't work. Shame about that. The others look good.
1347: 1102: 492: 1000: 683:
Subsequent comments should be made on the appropriate discussion page (such as
469: 138: 1429: 1414: 1392: 1376: 1355: 1197: 1131: 1110: 1056: 1042: 1028: 1014: 991: 717: 668: 642: 627: 839: 830:: ... that Parisian seamstresses initiated novices by making them sew a 817: 585: 395: 1174: 963: 695:), unless there is consensus to re-open the discussion at this page. 821: 974:
Template:Did you know nominations/Frequency modulation encoding
905: 633:
The pink/blue strip has two sides and is not a Möbiusstrip. --
588: 548: 405: 397: 189: 862:
https://www.theverge.com/2014/9/5/6110563/mobius-bacon-recipe
946:
https://books.google.com/books?id=IwDvAAAAMAAJ&pg=PA53
777:
https://books.google.com/books?id=RMH2DwAAQBAJ&pg=PA31
1402: 1398: 738: 729: 102: 83: 1459:
Knowledge Did you know articles that are good articles
334: 1210: 491:, a collaborative effort to improve the coverage of 1338: 898:can be made to have a perfectly circular boundary 938:stays in one piece when cut along its centerline 854:has been used to shape bagels, bacon, and pasta? 207:for general discussion of the article's subject. 48:If it no longer meets these criteria, you can 596:This page has archives. Sections older than 348: 8: 1078:be included in the popular culture section? 960:can have two sides in non-Euclidean spaces? 697:No further edits should be made to this page 654: 437: 62: 15: 1312: 1297: 1264: 1252: 1244: 1238: 1233: 1220: 1215: 1209: 1397:You provided the same justification in 1328: 1320: 439: 606:when more than 5 sections are present. 921:Möbius strip cut along its centerline 881:Möbius strip with a circular boundary 840:https://www.jstor.org/stable/27843983 818:https://www.jstor.org/stable/27843983 810:can be seen on ancient Roman mosaics 7: 964:https://www.jstor.org/stable/3026946 485:This article is within the scope of 411: 409: 982:Improved to Good Article status by 428:It is of interest to the following 197:for discussing improvements to the 1469:High-priority mathematics articles 14: 1155:The American Mathematical Monthly 600:may be automatically archived by 505:Knowledge:WikiProject Mathematics 41:. If you can improve it further, 1005:be created to use some of them. 999: 915: 875: 822:https://arxiv.org/abs/1609.07779 784: 748: 553: 508:Template:WikiProject Mathematics 472: 462: 441: 410: 379: 219:Click here to start a new topic. 124: 19: 680:Please do not modify this page. 525:This article has been rated as 1430:11:53, 23 September 2023 (UTC) 1415:10:31, 23 September 2023 (UTC) 1393:10:15, 23 September 2023 (UTC) 1377:08:41, 23 September 2023 (UTC) 1309: 1305: 1291: 1273: 1261: 1246: 1168:10.1080/00029890.1969.12000217 29:has been listed as one of the 1: 1464:GA-Class mathematics articles 643:16:41, 1 September 2020 (UTC) 628:14:21, 1 September 2020 (UTC) 499:and see a list of open tasks. 216:Put new text under old text. 906:https://vimeo.com/286360639 693:Knowledge talk:Did you know 685:this nomination's talk page 669:12:42, 23 August 2024 (UTC) 224:New to Knowledge? Welcome! 158:The text of the entry was: 1485: 1057:10:41, 23 April 2022 (UTC) 1043:17:02, 19 April 2022 (UTC) 1029:05:02, 19 April 2022 (UTC) 1015:02:33, 19 April 2022 (UTC) 992:18:14, 18 April 2022 (UTC) 718:10:41, 23 April 2022 (UTC) 661:2A02:2168:B03:3F14:0:0:0:4 160:Did you know ... that the 1454:Mathematics good articles 1362:Relation to Umbilic torus 1145:Pappus's centroid theorem 524: 457: 436: 254:Be welcoming to newcomers 180: 65: 61: 33:Mathematics good articles 531:project's priority scale 137:appeared on Knowledge's 1449:Knowledge good articles 1356:03:26, 9 May 2022 (UTC) 1198:01:21, 4 May 2022 (UTC) 1132:17:43, 3 May 2022 (UTC) 1111:17:35, 3 May 2022 (UTC) 836:collar onto a garment? 689:the article's talk page 649:Did you know nomination 488:WikiProject Mathematics 1340: 793:holding a Möbius strip 603:Lowercase sigmabot III 418:This article is rated 249:avoid personal attacks 135:fact from this article 1341: 1138:Area of swept surface 990:). Self-nominated at 373:Auto-archiving period 274:Neutral point of view 39:good article criteria 1208: 511:mathematics articles 279:No original research 110:Good article nominee 91:Good article nominee 1243: 1228: 1336: 1329: 1321: 1229: 1211: 480:Mathematics portal 424:content assessment 260:dispute resolution 221: 66:Article milestones 1318: 1101: 995: 966: 948: 908: 868: 842: 824: 779: 671: 659:comment added by 610: 609: 545: 544: 541: 540: 537: 536: 404: 403: 240:Assume good faith 217: 188: 187: 119: 118: 57: 1476: 1345: 1343: 1342: 1337: 1319: 1317: 1316: 1301: 1269: 1268: 1256: 1245: 1242: 1237: 1227: 1219: 1184: 1119:Mobius M. Mobius 1079: 1076:Mobius M. Mobius 1070:Mobius M. Mobius 1003: 981: 961: 943: 919: 903: 879: 856:Source: Bagels: 855: 837: 815: 788: 774: 762:recycling symbol 754:recycling symbol 752: 704:The result was: 682: 605: 589: 557: 549: 513: 512: 509: 506: 503: 482: 477: 476: 466: 459: 458: 453: 445: 438: 421: 415: 414: 413: 406: 398: 384: 383: 374: 353: 352: 338: 269:Article policies 190: 181:Current status: 162:recycling symbol 128: 105: 86: 63: 46: 23: 16: 1484: 1483: 1479: 1478: 1477: 1475: 1474: 1473: 1439: 1438: 1403:my earlier edit 1364: 1308: 1260: 1206: 1205: 1151: 1140: 1072: 1067: 954:: ... that the 932:: ... that the 924: 923: 922: 892:: ... that the 884: 883: 882: 848:: ... that the 804:: ... that the 796: 795: 794: 757: 756: 755: 745: 743: 739:Article history 678: 651: 615: 613:Twice cut strip 601: 590: 584: 562: 510: 507: 504: 501: 500: 478: 471: 451: 422:on Knowledge's 419: 400: 399: 394: 371: 295: 290: 289: 288: 265: 235: 176: 175: 156: 101: 82: 12: 11: 5: 1482: 1480: 1472: 1471: 1466: 1461: 1456: 1451: 1441: 1440: 1437: 1436: 1435: 1434: 1433: 1432: 1422:David Eppstein 1385:David Eppstein 1363: 1360: 1359: 1358: 1335: 1332: 1327: 1324: 1315: 1311: 1307: 1304: 1300: 1296: 1293: 1290: 1287: 1284: 1281: 1278: 1275: 1272: 1267: 1263: 1259: 1255: 1251: 1248: 1241: 1236: 1232: 1226: 1223: 1218: 1214: 1190:David Eppstein 1186: 1185: 1139: 1136: 1135: 1134: 1124:David Eppstein 1071: 1068: 1066: 1065: 1064: 1063: 1062: 1061: 1060: 1059: 1021:David Eppstein 984:David Eppstein 979: 978: 977: 976: 967: 949: 920: 914: 913: 912: 911: 910: 909: 880: 874: 873: 872: 871: 870: 869: 843: 825: 789: 783: 782: 781: 780: 753: 747: 746: 742: 741: 736: 726: 724: 720: 702: 701: 673: 650: 647: 646: 645: 614: 611: 608: 607: 595: 592: 591: 586: 582: 580: 577: 576: 564: 563: 558: 552: 543: 542: 539: 538: 535: 534: 523: 517: 516: 514: 497:the discussion 484: 483: 467: 455: 454: 446: 434: 433: 427: 416: 402: 401: 392: 390: 389: 386: 385: 355: 354: 292: 291: 287: 286: 281: 276: 267: 266: 264: 263: 256: 251: 242: 236: 234: 233: 222: 213: 212: 209: 208: 202: 186: 185: 178: 177: 157: 132: 131: 129: 121: 120: 117: 116: 113: 106: 103:April 18, 2022 98: 97: 94: 87: 84:March 30, 2022 79: 78: 75: 72: 68: 67: 59: 58: 24: 13: 10: 9: 6: 4: 3: 2: 1481: 1470: 1467: 1465: 1462: 1460: 1457: 1455: 1452: 1450: 1447: 1446: 1444: 1431: 1427: 1423: 1418: 1417: 1416: 1412: 1408: 1407:Leon.Manukyan 1404: 1400: 1399:your reversal 1396: 1395: 1394: 1390: 1386: 1381: 1380: 1379: 1378: 1374: 1370: 1369:Leon.Manukyan 1361: 1357: 1353: 1349: 1333: 1330: 1325: 1322: 1313: 1302: 1298: 1294: 1288: 1285: 1282: 1279: 1276: 1270: 1265: 1257: 1253: 1249: 1239: 1234: 1230: 1224: 1221: 1216: 1212: 1202: 1201: 1200: 1199: 1195: 1191: 1183: 1180: 1176: 1173: 1169: 1165: 1161: 1157: 1156: 1150: 1149: 1148: 1146: 1137: 1133: 1129: 1125: 1120: 1115: 1114: 1113: 1112: 1108: 1104: 1099: 1095: 1091: 1087: 1083: 1077: 1069: 1058: 1054: 1050: 1046: 1045: 1044: 1040: 1036: 1032: 1031: 1030: 1026: 1022: 1018: 1017: 1016: 1012: 1008: 1002: 998: 997: 996: 993: 989: 985: 975: 971: 968: 965: 959: 958: 953: 950: 947: 941: 937: 936: 931: 928: 927: 926: 925: 918: 907: 901: 897: 896: 891: 888: 887: 886: 885: 878: 867: 863: 859: 853: 852: 847: 844: 841: 835: 834: 829: 826: 823: 819: 813: 809: 808: 803: 800: 799: 798: 797: 792: 787: 778: 772: 771: 766: 763: 760:... that the 759: 758: 751: 740: 737: 735: 731: 728: 727: 723: 721: 719: 715: 711: 707: 700: 698: 694: 690: 686: 681: 675: 674: 672: 670: 666: 662: 658: 648: 644: 640: 636: 632: 631: 630: 629: 625: 621: 612: 604: 599: 594: 593: 579: 578: 575: 574: 570: 566: 565: 561: 556: 551: 550: 547: 532: 528: 527:High-priority 522: 519: 518: 515: 498: 494: 490: 489: 481: 475: 470: 468: 465: 461: 460: 456: 452:High‑priority 450: 447: 444: 440: 435: 431: 425: 417: 408: 407: 388: 387: 382: 378: 370: 366: 363: 361: 357: 356: 351: 347: 344: 341: 337: 333: 329: 326: 323: 320: 317: 314: 311: 308: 305: 301: 298: 297:Find sources: 294: 293: 285: 284:Verifiability 282: 280: 277: 275: 272: 271: 270: 261: 257: 255: 252: 250: 246: 243: 241: 238: 237: 231: 227: 226:Learn to edit 223: 220: 215: 214: 211: 210: 206: 200: 196: 192: 191: 184: 179: 174: 172: 171: 164: 163: 154: 153: 148: 146: 145:Did you know? 140: 136: 130: 127: 123: 122: 114: 112: 111: 107: 104: 100: 99: 95: 93: 92: 88: 85: 81: 80: 76: 73: 70: 69: 64: 60: 55: 53: 52: 44: 40: 36: 35: 34: 28: 25: 22: 18: 17: 1365: 1187: 1159: 1153: 1141: 1073: 980: 969: 957:Möbius strip 955: 951: 939: 935:Möbius strip 933: 929: 899: 895:Möbius strip 893: 889: 851:Möbius strip 849: 845: 833:Möbius strip 831: 827: 811: 807:Möbius strip 805: 801: 770:Möbius strip 768: 764: 722: 705: 703: 696: 688: 684: 679: 676: 655:— Preceding 652: 616: 597: 567: 559: 546: 526: 486: 430:WikiProjects 376: 358: 345: 339: 331: 324: 318: 312: 306: 296: 268: 199:Möbius strip 193:This is the 183:Good article 182: 170:Möbius strip 168: 166: 159: 150: 142: 108: 89: 49: 47: 43:please do so 31: 30: 27:Möbius strip 26: 1162:: 355–366, 502:Mathematics 493:mathematics 449:Mathematics 322:free images 205:not a forum 152:May 3, 2022 1443:Categories 1080:(Sources: 940:(pictured) 900:(pictured) 812:(pictured) 767:depicts a 765:(pictured) 620:Cmdrscotty 167:depicts a 165:(pictured) 149:column on 96:Not listed 37:under the 864:– Pasta: 860:– Bacon: 262:if needed 245:Be polite 195:talk page 139:Main Page 970:Reviewed 962:Source: 944:Source: 904:Source: 838:Source: 816:Source: 775:Source: 706:promoted 657:unsigned 598:365 days 560:Archives 420:GA-class 377:365 days 360:Archives 230:get help 203:This is 201:article. 51:reassess 1182:0240702 1175:2316426 1074:Should 1049:Kingsif 1035:Thriley 1007:Thriley 730:Comment 710:Kingsif 635:Ag2gaeh 529:on the 328:WP refs 316:scholar 141:in the 74:Process 1348:Ovinus 1103:Sahaib 426:scale. 300:Google 115:Listed 77:Result 1172:JSTOR 343:JSTOR 304:books 258:Seek 1426:talk 1411:talk 1389:talk 1373:talk 1352:talk 1194:talk 1128:talk 1107:talk 1053:talk 1039:talk 1025:talk 1011:talk 988:talk 952:ALT6 930:ALT5 890:ALT4 846:ALT3 828:ALT2 820:and 802:ALT1 791:Aion 734:view 714:talk 665:talk 639:talk 624:talk 521:High 336:FENS 310:news 247:and 71:Date 1401:of 1286:cos 1164:doi 732:or 708:by 691:or 350:TWL 1445:: 1428:) 1413:) 1391:) 1375:) 1354:) 1346:. 1289:⁡ 1231:∫ 1225:π 1213:∫ 1196:) 1179:MR 1177:, 1170:, 1160:76 1158:, 1130:) 1109:) 1096:, 1092:, 1088:, 1084:, 1055:) 1041:) 1027:) 1013:) 972:: 942:? 902:? 814:? 773:? 725:( 716:) 687:, 667:) 641:) 626:) 571:, 375:: 367:, 330:) 228:; 133:A 54:it 45:. 1424:( 1420:— 1409:( 1387:( 1371:( 1350:( 1334:s 1331:d 1326:t 1323:d 1314:2 1310:) 1306:) 1303:2 1299:/ 1295:s 1292:( 1283:t 1280:+ 1277:1 1274:( 1271:+ 1266:2 1262:) 1258:2 1254:/ 1250:t 1247:( 1240:1 1235:0 1222:2 1217:0 1192:( 1188:— 1166:: 1126:( 1105:( 1100:) 1098:5 1094:4 1090:3 1086:2 1082:1 1051:( 1037:( 1023:( 1009:( 994:. 986:( 744:) 712:( 699:. 663:( 637:( 622:( 573:2 569:1 533:. 432:: 369:2 365:1 362:: 346:· 340:· 332:· 325:· 319:· 313:· 307:· 302:( 232:. 173:? 155:. 147:" 143:" 56:.

Index

Good article
Mathematics good articles
good article criteria
please do so
reassess
March 30, 2022
Good article nominee
April 18, 2022
Good article nominee
Did You Know
fact from this article
Main Page
Did you know?
May 3, 2022
recycling symbol
Möbius strip
talk page
Möbius strip
not a forum
Click here to start a new topic.
Learn to edit
get help
Assume good faith
Be polite
avoid personal attacks
Be welcoming to newcomers
dispute resolution
Neutral point of view
No original research
Verifiability

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