Knowledge (XXG)

Talk:Jacket matrix

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According to the first condition, this is a necessary condition, but not a sufficient one. Therefore, the two definitions are not equivalent. Presumably it should also include the fact that the summation should equal
1562: 1489:). Now, perhaps their are alternative definitions of orthogonal and unitary matrices out there, but for internal consistency, the definitions on this page need to match those elsewhere in Knowledge (XXG). 531: 1184:
Actually, no, hang on. That alternative definition is dangerous. Is there anything to prevent these matrices having zero-valued elements? If not, then the alternative definition will be meaningless.
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https://web.archive.org/web/20110722132459/http://mdmc.chonbuk.ac.kr/english/images/Jacket%20matrix%20and%20its%20fast%20algorithm%20for%20wireless%20signal%20processing.pdf
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it's saying that each element of the conjugate transpose is the inverse of the corresponding element of the original matrix. This is clearly not the case in the example.
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I see someone's now removed the alternative definition from the lead. If that's because it's wrong, it also needs removing from the "Properties" section.
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Does the jacket matrix work over fields in general, or only over the specific examples mentioned? If it's the former, all that need be said is:
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When you have finished reviewing my changes, you may follow the instructions on the template below to fix any issues with the URLs.
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http://mdmc.chonbuk.ac.kr/english/images/Jacket%20matrix%20and%20its%20fast%20algorithm%20for%20wireless%20signal%20processing.pdf
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Maybe I'm being slow, but I'm not sure how that validates the "discrepancy" I think exists above! If I understand the notation:
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A possible compromise is to simply remove the definitions. What purpose do they serve on a page about jacket matrices?
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to delete these "External links modified" talk page sections if they want to de-clutter talk pages, but see the
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Right, I see someone's fixed the problem I mentioned above. However, the "different form" also worries me:
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These currently don't agree (because of the overall scaling by 1/4). Should the property actually read:
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1543:. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit 111: 1063:{\displaystyle \sum _{i=1}^{n}{a_{u,i} \over a_{v,i}}=0{\text{ for }}u,v\in \{1,\dots ,n\},\ u\neq v.} 1553:
https://web.archive.org/web/20110722132439/http://mdmc.chonbuk.ac.kr/english/download/report%201.pdf
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before doing mass systematic removals. This message is updated dynamically through the template
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Actually, nevermind! I've just realised that's it's self-evident what the summation is when
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whose entries are from a real field, a complex field or a finite field.
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However, the defining property of a jacket matrix is given by:
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for additional information. I made the following changes:
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http://mdmc.chonbuk.ac.kr/english/download/report%201.pdf
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It says: 8: 1381:{\displaystyle \sum _{i=1}^{n}a_{u,i}^{2}=1} 1205:whose entries are non-zero and from a field. 1167:{\displaystyle {\frac {a_{u,i}}{a_{v,i}}}=1} 1040: 1022: 47: 75: 26:This article was previously nominated for 1535:I have just modified 2 external links on 1449: 1444: 1431: 1422: 1416: 1405: 1399: 1366: 1355: 1345: 1334: 1328: 1294: 1285: 1258: 1249: 1144: 1128: 1122: 1120: 1005: 985: 969: 963: 957: 946: 940: 889: 881: 864: 863: 855: 805: 792: 773: 767: 731: 715: 696: 690: 648: 640: 620: 619: 611: 578: 570: 553: 552: 544: 466: 451: 424: 412: 378: 364: 352: 347: 220: 207: 201: 1244:, the conditions are clearly stated as 814: 745:{\displaystyle A^{*}A=AA^{*}=nI_{n}.\,} 740: 143:Knowledge (XXG):WikiProject Mathematics 77: 819:{\displaystyle A^{*}A=AA^{*}=I_{n}.\,} 830:You need to read the whole sentence. 7: 123:This article is within the scope of 1211:If it's the latter, it should say: 66:It is of interest to the following 14: 1662:Low-priority mathematics articles 1539:. Please take a moment to review 1657:Start-Class mathematics articles 146:Template:WikiProject Mathematics 110: 100: 79: 48: 19: 163:This article has been rated as 1445: 1423: 898: 874: 657: 633: 587: 563: 1: 1643:10:50, 19 November 2017 (UTC) 137:and see a list of open tasks. 1514:How is the jacket matrix a 1678: 1606:(last update: 5 June 2024) 1532:Hello fellow Wikipedians, 1504:01:38, 13 April 2009 (UTC) 1494:10:55, 12 April 2009 (UTC) 1227:10:30, 11 April 2009 (UTC) 1190:09:31, 10 April 2009 (UTC) 1179:09:16, 10 April 2009 (UTC) 1101:09:06, 10 April 2009 (UTC) 1091:12:29, 9 April 2009 (UTC) 920:22:32, 7 April 2009 (UTC) 840:21:15, 7 April 2009 (UTC) 678:19:14, 6 April 2009 (UTC) 162: 95: 74: 1523:12:00, 16 May 2009 (UTC) 1309:{\displaystyle UU^{*}=I} 1273:{\displaystyle QQ^{T}=I} 193:The current example is: 169:project's priority scale 1528:External links modified 126:WikiProject Mathematics 1465: 1421: 1382: 1350: 1310: 1274: 1168: 1064: 962: 905: 820: 746: 664: 594: 527: 56:This article is rated 1466: 1401: 1383: 1330: 1311: 1275: 1169: 1065: 942: 906: 821: 747: 665: 595: 528: 60:on Knowledge (XXG)'s 1587:regular verification 1398: 1327: 1284: 1248: 1236:In the articles for 1119: 939: 854: 766: 689: 610: 543: 200: 149:mathematics articles 1577:After February 2018 1510:Vandermonde matrix? 1371: 897: 656: 586: 360: 1631:InternetArchiveBot 1582:InternetArchiveBot 1516:Vandermonde matrix 1461: 1378: 1351: 1306: 1270: 1164: 1060: 901: 877: 816: 815: 742: 741: 660: 636: 590: 566: 523: 514: 343: 328: 118:Mathematics portal 62:content assessment 1607: 1318:orthonormal basis 1238:Orthogonal matrix 1156: 1047: 1008: 997: 858: 614: 547: 474: 459: 432: 420: 372: 342: 340: 338: 183: 182: 179: 178: 175: 174: 42: 41: 1669: 1641: 1632: 1605: 1604: 1583: 1470: 1468: 1467: 1462: 1454: 1453: 1448: 1442: 1441: 1426: 1420: 1415: 1387: 1385: 1384: 1379: 1370: 1365: 1349: 1344: 1315: 1313: 1312: 1307: 1299: 1298: 1279: 1277: 1276: 1271: 1263: 1262: 1173: 1171: 1170: 1165: 1157: 1155: 1154: 1139: 1138: 1123: 1069: 1067: 1066: 1061: 1046: 1009: 1006: 998: 996: 995: 980: 979: 964: 961: 956: 928:Definition again 910: 908: 907: 902: 896: 888: 870: 869: 868: 857: 825: 823: 822: 817: 810: 809: 797: 796: 778: 777: 751: 749: 748: 743: 736: 735: 720: 719: 701: 700: 669: 667: 666: 661: 655: 647: 626: 625: 624: 613: 599: 597: 596: 591: 585: 577: 559: 558: 557: 546: 532: 530: 529: 524: 519: 515: 475: 467: 460: 452: 433: 425: 421: 413: 373: 365: 359: 351: 341: 339: 337: 333: 329: 212: 211: 151: 150: 147: 144: 141: 120: 115: 114: 104: 97: 96: 91: 83: 76: 59: 53: 52: 44: 30:. The result of 23: 16: 1677: 1676: 1672: 1671: 1670: 1668: 1667: 1666: 1647: 1646: 1635: 1630: 1598: 1591:have permission 1581: 1545:this simple FaQ 1530: 1512: 1443: 1427: 1396: 1395: 1325: 1324: 1290: 1282: 1281: 1254: 1246: 1245: 1234: 1197: 1140: 1124: 1117: 1116: 981: 965: 937: 936: 930: 859: 852: 851: 801: 788: 769: 764: 763: 727: 711: 692: 687: 686: 615: 608: 607: 548: 541: 540: 513: 512: 507: 499: 491: 485: 484: 476: 461: 449: 443: 442: 434: 422: 407: 401: 400: 395: 390: 385: 374: 327: 326: 321: 313: 305: 299: 298: 290: 282: 277: 271: 270: 262: 257: 249: 243: 242: 237: 232: 227: 216: 203: 198: 197: 191: 148: 145: 142: 139: 138: 116: 109: 89: 57: 12: 11: 5: 1675: 1673: 1665: 1664: 1659: 1649: 1648: 1625: 1624: 1617: 1570: 1569: 1561:Added archive 1559: 1551:Added archive 1529: 1526: 1511: 1508: 1507: 1506: 1472: 1471: 1460: 1457: 1452: 1447: 1440: 1437: 1434: 1430: 1425: 1419: 1414: 1411: 1408: 1404: 1389: 1388: 1377: 1374: 1369: 1364: 1361: 1358: 1354: 1348: 1343: 1340: 1337: 1333: 1305: 1302: 1297: 1293: 1289: 1269: 1266: 1261: 1257: 1253: 1242:Unitary matrix 1233: 1230: 1221: 1220: 1209: 1208: 1196: 1193: 1182: 1181: 1163: 1160: 1153: 1150: 1147: 1143: 1137: 1134: 1131: 1127: 1104: 1103: 1071: 1070: 1059: 1056: 1053: 1050: 1045: 1042: 1039: 1036: 1033: 1030: 1027: 1024: 1021: 1018: 1015: 1012: 1004: 1001: 994: 991: 988: 984: 978: 975: 972: 968: 960: 955: 952: 949: 945: 929: 926: 925: 924: 923: 922: 913: 912: 911: 900: 895: 892: 887: 884: 880: 876: 873: 867: 862: 843: 842: 828: 827: 826: 813: 808: 804: 800: 795: 791: 787: 784: 781: 776: 772: 754: 753: 752: 739: 734: 730: 726: 723: 718: 714: 710: 707: 704: 699: 695: 671: 670: 659: 654: 651: 646: 643: 639: 635: 632: 629: 623: 618: 601: 600: 589: 584: 581: 576: 573: 569: 565: 562: 556: 551: 534: 533: 522: 518: 511: 508: 506: 503: 500: 498: 495: 492: 490: 487: 486: 483: 480: 477: 473: 470: 465: 462: 458: 455: 450: 448: 445: 444: 441: 438: 435: 431: 428: 423: 419: 416: 411: 408: 406: 403: 402: 399: 396: 394: 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Oli Filth
19:14, 6 April 2009 (UTC)
Michael Hardy
talk
21:15, 7 April 2009 (UTC)
Oli Filth
22:32, 7 April 2009 (UTC)
Oli Filth
12:29, 9 April 2009 (UTC)
Oli Filth
09:06, 10 April 2009 (UTC)
Oli Filth
09:16, 10 April 2009 (UTC)
Oli Filth

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