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Dual wavelet

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22: 692: 505: 889: 1070: 1191: 1405: 1461: 326: 1519: 1694: 199: 932: 775: 1260: 497: 1598: 1302: 970: 451: 363: 1551: 687:{\displaystyle A\Vert c_{jk}\Vert _{l^{2}}^{2}\leq {\bigg \Vert }\sum _{jk=-\infty }^{\infty }c_{jk}\psi _{jk}{\bigg \Vert }_{L^{2}}^{2}\leq B\Vert c_{jk}\Vert _{l^{2}}^{2}\,} 409: 235: 1224: 1107: 735: 783: 1629: 978: 1115: 1318: 1730: 105: 1413: 43: 86: 243: 39: 58: 1076: 146: 1469: 65: 698: 139: 1634: 160: 1750: 897: 740: 1709: 1233: 72: 464: 1568: 32: 1305: 142: 1269: 937: 418: 334: 54: 1527: 378: 204: 149:. However, the dual series is not itself in general representable by a square-integrable function. 1199: 884:{\displaystyle \Vert c_{jk}\Vert _{l^{2}}^{2}=\sum _{jk=-\infty }^{\infty }\vert c_{jk}\vert ^{2}} 1601: 1082: 704: 1745: 1726: 1614: 1227: 1065:{\displaystyle \Vert f\Vert _{L^{2}}^{2}=\int _{-\infty }^{\infty }\vert f(x)\vert ^{2}dx} 79: 135: 1739: 1263: 1186:{\displaystyle \langle \psi ^{jk}\vert \psi _{lm}\rangle =\delta _{jl}\delta _{km}} 119: 21: 1700:. It is straightforward to show that this ψ does not have a wavelet dual. 127: 1400:{\displaystyle f(x)=\sum _{jk}\langle \psi ^{jk}\vert f\rangle \psi _{jk}(x)} 412: 131: 1723:
An Introduction to Wavelets (Wavelet Analysis & Its Applications)
1565:-function ψ, the dual will not exist. In the special case of 616: 555: 15: 1456:{\displaystyle {\tilde {\psi }}\in L^{2}(\mathbb {R} )} 1637: 1617: 1571: 1530: 1472: 1416: 1321: 1272: 1236: 1202: 1118: 1085: 981: 940: 900: 786: 743: 707: 508: 467: 421: 381: 337: 246: 207: 163: 321:{\displaystyle \psi _{jk}(x)=2^{j/2}\psi (2^{j}x-k)} 1611:-function without a dual is easy to construct. Let 46:. Unsourced material may be challenged and removed. 1688: 1623: 1592: 1545: 1513: 1455: 1399: 1296: 1254: 1218: 1185: 1101: 1064: 964: 926: 883: 769: 729: 686: 491: 445: 403: 357: 320: 229: 193: 1514:{\displaystyle {\tilde {\psi }}_{jk}=\psi ^{jk}} 145:will have a dual series, in the sense of the 8: 1689:{\displaystyle \psi (x)=\phi (x)+z\phi (2x)} 1372: 1366: 1350: 1249: 1243: 1237: 1151: 1135: 1119: 1047: 1031: 989: 982: 908: 901: 872: 855: 804: 787: 751: 744: 724: 708: 662: 645: 529: 512: 398: 382: 224: 208: 194:{\displaystyle \psi \in L^{2}(\mathbb {R} )} 927:{\displaystyle \Vert \cdot \Vert _{L^{2}}} 770:{\displaystyle \Vert \cdot \Vert _{l^{2}}} 1636: 1616: 1579: 1578: 1570: 1532: 1531: 1529: 1502: 1486: 1475: 1474: 1471: 1446: 1445: 1436: 1418: 1417: 1415: 1379: 1357: 1341: 1320: 1287: 1286: 1277: 1271: 1235: 1207: 1201: 1174: 1161: 1142: 1126: 1117: 1090: 1084: 1050: 1025: 1017: 1004: 997: 992: 980: 955: 954: 945: 939: 916: 911: 899: 875: 862: 849: 832: 819: 812: 807: 794: 785: 759: 754: 742: 715: 706: 683: 677: 670: 665: 652: 633: 626: 621: 615: 614: 604: 591: 581: 564: 554: 553: 544: 537: 532: 519: 507: 466: 436: 435: 426: 420: 389: 380: 351: 350: 336: 300: 280: 276: 251: 245: 215: 206: 184: 183: 174: 162: 106:Learn how and when to remove this message 1255:{\displaystyle \langle f\vert g\rangle } 453:, and if there exist positive constants 492:{\displaystyle 0<A\leq B<\infty } 1631:be an orthogonal wavelet. Then define 1593:{\displaystyle \psi ={\tilde {\psi }}} 1725:, (1992), Academic Press, San Diego, 7: 44:adding citations to reliable sources 1297:{\displaystyle L^{2}(\mathbb {R} )} 1079:, there exists a unique dual basis 965:{\displaystyle L^{2}(\mathbb {R} )} 446:{\displaystyle L^{2}(\mathbb {R} )} 358:{\displaystyle j,k\in \mathbb {Z} } 157:Given a square-integrable function 1026: 1021: 850: 845: 582: 577: 486: 14: 1308:for a square-integrable function 1546:{\displaystyle {\tilde {\psi }}} 1304:. Indeed, there exists a unique 20: 1600:, the wavelet is said to be an 31:needs additional citations for 1683: 1674: 1662: 1656: 1647: 1641: 1584: 1537: 1480: 1450: 1442: 1423: 1394: 1388: 1331: 1325: 1291: 1283: 1043: 1037: 959: 951: 440: 432: 404:{\displaystyle \{\psi _{jk}\}} 315: 293: 266: 260: 230:{\displaystyle \{\psi _{jk}\}} 188: 180: 1: 1561:. In general, for some given 777:denotes the square-sum norm: 368:Such a function is called an 1219:{\displaystyle \delta _{jk}} 1077:Riesz representation theorem 147:Riesz representation theorem 1410:If there exists a function 1767: 1102:{\displaystyle \psi ^{jk}} 934:denotes the usual norm on 730:{\displaystyle \{c_{jk}\}} 1312:expressed in this basis: 1710:Multiresolution analysis 1696:for some complex number 1690: 1625: 1594: 1559:wavelet dual to ψ 1547: 1515: 1457: 1401: 1298: 1256: 1220: 1187: 1103: 1066: 966: 928: 885: 854: 771: 731: 688: 586: 493: 447: 405: 375:if the linear span of 359: 322: 231: 195: 1691: 1626: 1624:{\displaystyle \phi } 1595: 1548: 1516: 1458: 1402: 1306:series representation 1299: 1257: 1221: 1188: 1104: 1067: 967: 929: 886: 828: 772: 732: 689: 560: 494: 448: 406: 360: 323: 232: 196: 1635: 1615: 1569: 1528: 1470: 1414: 1319: 1270: 1234: 1200: 1116: 1083: 979: 938: 898: 784: 741: 705: 697:for all bi-infinite 506: 465: 419: 379: 335: 244: 205: 201:, define the series 161: 40:improve this article 1030: 1009: 824: 682: 638: 549: 1686: 1621: 1602:orthogonal wavelet 1590: 1543: 1511: 1453: 1397: 1349: 1294: 1252: 1216: 1183: 1099: 1062: 1013: 988: 962: 924: 881: 803: 767: 727: 684: 661: 613: 528: 489: 443: 401: 355: 318: 227: 191: 134:. In general, the 1721:Charles K. Chui, 1607:An example of an 1587: 1540: 1483: 1426: 1337: 140:square-integrable 116: 115: 108: 90: 1758: 1751:Duality theories 1695: 1693: 1692: 1687: 1630: 1628: 1627: 1622: 1599: 1597: 1596: 1591: 1589: 1588: 1580: 1552: 1550: 1549: 1544: 1542: 1541: 1533: 1520: 1518: 1517: 1512: 1510: 1509: 1494: 1493: 1485: 1484: 1476: 1462: 1460: 1459: 1454: 1449: 1441: 1440: 1428: 1427: 1419: 1406: 1404: 1403: 1398: 1387: 1386: 1365: 1364: 1348: 1303: 1301: 1300: 1295: 1290: 1282: 1281: 1261: 1259: 1258: 1253: 1225: 1223: 1222: 1217: 1215: 1214: 1192: 1190: 1189: 1184: 1182: 1181: 1169: 1168: 1150: 1149: 1134: 1133: 1108: 1106: 1105: 1100: 1098: 1097: 1071: 1069: 1068: 1063: 1055: 1054: 1029: 1024: 1008: 1003: 1002: 1001: 971: 969: 968: 963: 958: 950: 949: 933: 931: 930: 925: 923: 922: 921: 920: 890: 888: 887: 882: 880: 879: 870: 869: 853: 848: 823: 818: 817: 816: 802: 801: 776: 774: 773: 768: 766: 765: 764: 763: 736: 734: 733: 728: 723: 722: 693: 691: 690: 685: 681: 676: 675: 674: 660: 659: 637: 632: 631: 630: 620: 619: 612: 611: 599: 598: 585: 580: 559: 558: 548: 543: 542: 541: 527: 526: 498: 496: 495: 490: 452: 450: 449: 444: 439: 431: 430: 410: 408: 407: 402: 397: 396: 364: 362: 361: 356: 354: 327: 325: 324: 319: 305: 304: 289: 288: 284: 259: 258: 236: 234: 233: 228: 223: 222: 200: 198: 197: 192: 187: 179: 178: 111: 104: 100: 97: 91: 89: 48: 24: 16: 1766: 1765: 1761: 1760: 1759: 1757: 1756: 1755: 1736: 1735: 1718: 1706: 1633: 1632: 1613: 1612: 1567: 1566: 1526: 1525: 1498: 1473: 1468: 1467: 1432: 1412: 1411: 1375: 1353: 1317: 1316: 1273: 1268: 1267: 1232: 1231: 1228:Kronecker delta 1203: 1198: 1197: 1170: 1157: 1138: 1122: 1114: 1113: 1086: 1081: 1080: 1046: 993: 977: 976: 941: 936: 935: 912: 907: 896: 895: 871: 858: 808: 790: 782: 781: 755: 750: 739: 738: 711: 703: 702: 699:square summable 666: 648: 622: 600: 587: 533: 515: 504: 503: 463: 462: 422: 417: 416: 385: 377: 376: 333: 332: 296: 272: 247: 242: 241: 211: 203: 202: 170: 159: 158: 155: 138:generated by a 112: 101: 95: 92: 49: 47: 37: 25: 12: 11: 5: 1764: 1762: 1754: 1753: 1748: 1738: 1737: 1734: 1733: 1717: 1714: 1713: 1712: 1705: 1702: 1685: 1682: 1679: 1676: 1673: 1670: 1667: 1664: 1661: 1658: 1655: 1652: 1649: 1646: 1643: 1640: 1620: 1586: 1583: 1577: 1574: 1553:is called the 1539: 1536: 1522: 1521: 1508: 1505: 1501: 1497: 1492: 1489: 1482: 1479: 1452: 1448: 1444: 1439: 1435: 1431: 1425: 1422: 1408: 1407: 1396: 1393: 1390: 1385: 1382: 1378: 1374: 1371: 1368: 1363: 1360: 1356: 1352: 1347: 1344: 1340: 1336: 1333: 1330: 1327: 1324: 1293: 1289: 1285: 1280: 1276: 1251: 1248: 1245: 1242: 1239: 1213: 1210: 1206: 1194: 1193: 1180: 1177: 1173: 1167: 1164: 1160: 1156: 1153: 1148: 1145: 1141: 1137: 1132: 1129: 1125: 1121: 1096: 1093: 1089: 1073: 1072: 1061: 1058: 1053: 1049: 1045: 1042: 1039: 1036: 1033: 1028: 1023: 1020: 1016: 1012: 1007: 1000: 996: 991: 987: 984: 961: 957: 953: 948: 944: 919: 915: 910: 906: 903: 892: 891: 878: 874: 868: 865: 861: 857: 852: 847: 844: 841: 838: 835: 831: 827: 822: 815: 811: 806: 800: 797: 793: 789: 762: 758: 753: 749: 746: 726: 721: 718: 714: 710: 695: 694: 680: 673: 669: 664: 658: 655: 651: 647: 644: 641: 636: 629: 625: 618: 610: 607: 603: 597: 594: 590: 584: 579: 576: 573: 570: 567: 563: 557: 552: 547: 540: 536: 531: 525: 522: 518: 514: 511: 488: 485: 482: 479: 476: 473: 470: 442: 438: 434: 429: 425: 400: 395: 392: 388: 384: 353: 349: 346: 343: 340: 329: 328: 317: 314: 311: 308: 303: 299: 295: 292: 287: 283: 279: 275: 271: 268: 265: 262: 257: 254: 250: 226: 221: 218: 214: 210: 190: 186: 182: 177: 173: 169: 166: 154: 151: 136:wavelet series 114: 113: 55:"Dual wavelet" 28: 26: 19: 13: 10: 9: 6: 4: 3: 2: 1763: 1752: 1749: 1747: 1744: 1743: 1741: 1732: 1731:0-12-174584-8 1728: 1724: 1720: 1719: 1715: 1711: 1708: 1707: 1703: 1701: 1699: 1680: 1677: 1671: 1668: 1665: 1659: 1653: 1650: 1644: 1638: 1618: 1610: 1605: 1603: 1581: 1575: 1572: 1564: 1560: 1556: 1534: 1506: 1503: 1499: 1495: 1490: 1487: 1477: 1466: 1465: 1464: 1437: 1433: 1429: 1420: 1391: 1383: 1380: 1376: 1369: 1361: 1358: 1354: 1345: 1342: 1338: 1334: 1328: 1322: 1315: 1314: 1313: 1311: 1307: 1278: 1274: 1265: 1264:inner product 1262:is the usual 1246: 1240: 1229: 1211: 1208: 1204: 1178: 1175: 1171: 1165: 1162: 1158: 1154: 1146: 1143: 1139: 1130: 1127: 1123: 1112: 1111: 1110: 1094: 1091: 1087: 1078: 1059: 1056: 1051: 1040: 1034: 1018: 1014: 1010: 1005: 998: 994: 985: 975: 974: 973: 946: 942: 917: 913: 904: 876: 866: 863: 859: 842: 839: 836: 833: 829: 825: 820: 813: 809: 798: 795: 791: 780: 779: 778: 760: 756: 747: 719: 716: 712: 700: 678: 671: 667: 656: 653: 649: 642: 639: 634: 627: 623: 608: 605: 601: 595: 592: 588: 574: 571: 568: 565: 561: 550: 545: 538: 534: 523: 520: 516: 509: 502: 501: 500: 483: 480: 477: 474: 471: 468: 460: 456: 427: 423: 414: 393: 390: 386: 374: 372: 366: 347: 344: 341: 338: 331:for integers 312: 309: 306: 301: 297: 290: 285: 281: 277: 273: 269: 263: 255: 252: 248: 240: 239: 238: 219: 216: 212: 175: 171: 167: 164: 152: 150: 148: 144: 141: 137: 133: 129: 125: 121: 110: 107: 99: 88: 85: 81: 78: 74: 71: 67: 64: 60: 57: –  56: 52: 51:Find sources: 45: 41: 35: 34: 29:This article 27: 23: 18: 17: 1722: 1697: 1608: 1606: 1562: 1558: 1555:dual wavelet 1554: 1523: 1409: 1309: 1195: 1074: 893: 696: 458: 454: 370: 369: 367: 330: 156: 124:dual wavelet 123: 117: 102: 96:October 2010 93: 83: 76: 69: 62: 50: 38:Please help 33:verification 30: 120:mathematics 1740:Categories 1716:References 1463:such that 1109:such that 499:such that 153:Definition 66:newspapers 1672:ϕ 1654:ϕ 1639:ψ 1619:ϕ 1585:~ 1582:ψ 1573:ψ 1538:~ 1535:ψ 1500:ψ 1481:~ 1478:ψ 1430:∈ 1424:~ 1421:ψ 1377:ψ 1373:⟩ 1355:ψ 1351:⟨ 1339:∑ 1250:⟩ 1238:⟨ 1205:δ 1172:δ 1159:δ 1152:⟩ 1140:ψ 1124:ψ 1120:⟨ 1088:ψ 1027:∞ 1022:∞ 1019:− 1015:∫ 990:‖ 983:‖ 909:‖ 905:⋅ 902:‖ 851:∞ 846:∞ 843:− 830:∑ 805:‖ 788:‖ 752:‖ 748:⋅ 745:‖ 737:. Here, 663:‖ 646:‖ 640:≤ 602:ψ 583:∞ 578:∞ 575:− 562:∑ 551:≤ 530:‖ 513:‖ 487:∞ 478:≤ 387:ψ 373:-function 348:∈ 310:− 291:ψ 249:ψ 213:ψ 168:∈ 165:ψ 1746:Wavelets 1704:See also 617:‖ 556:‖ 143:function 1557:or the 1226:is the 1075:By the 701:series 132:wavelet 126:is the 80:scholar 1729:  1196:where 82:  75:  68:  61:  53:  1524:then 461:with 413:dense 130:to a 87:JSTOR 73:books 1727:ISBN 1230:and 894:and 484:< 472:< 128:dual 122:, a 59:news 1266:on 415:in 411:is 237:by 118:In 42:by 1742:: 1604:. 972:: 457:, 365:. 1698:z 1684:) 1681:x 1678:2 1675:( 1669:z 1666:+ 1663:) 1660:x 1657:( 1651:= 1648:) 1645:x 1642:( 1609:R 1576:= 1563:R 1507:k 1504:j 1496:= 1491:k 1488:j 1451:) 1447:R 1443:( 1438:2 1434:L 1395:) 1392:x 1389:( 1384:k 1381:j 1370:f 1367:| 1362:k 1359:j 1346:k 1343:j 1335:= 1332:) 1329:x 1326:( 1323:f 1310:f 1292:) 1288:R 1284:( 1279:2 1275:L 1247:g 1244:| 1241:f 1212:k 1209:j 1179:m 1176:k 1166:l 1163:j 1155:= 1147:m 1144:l 1136:| 1131:k 1128:j 1095:k 1092:j 1060:x 1057:d 1052:2 1048:| 1044:) 1041:x 1038:( 1035:f 1032:| 1011:= 1006:2 999:2 995:L 986:f 960:) 956:R 952:( 947:2 943:L 918:2 914:L 877:2 873:| 867:k 864:j 860:c 856:| 840:= 837:k 834:j 826:= 821:2 814:2 810:l 799:k 796:j 792:c 761:2 757:l 725:} 720:k 717:j 713:c 709:{ 679:2 672:2 668:l 657:k 654:j 650:c 643:B 635:2 628:2 624:L 609:k 606:j 596:k 593:j 589:c 572:= 569:k 566:j 546:2 539:2 535:l 524:k 521:j 517:c 510:A 481:B 475:A 469:0 459:B 455:A 441:) 437:R 433:( 428:2 424:L 399:} 394:k 391:j 383:{ 371:R 352:Z 345:k 342:, 339:j 316:) 313:k 307:x 302:j 298:2 294:( 286:2 282:/ 278:j 274:2 270:= 267:) 264:x 261:( 256:k 253:j 225:} 220:k 217:j 209:{ 189:) 185:R 181:( 176:2 172:L 109:) 103:( 98:) 94:( 84:· 77:· 70:· 63:· 36:.

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"Dual wavelet"
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scholar
JSTOR
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mathematics
dual
wavelet
wavelet series
square-integrable
function
Riesz representation theorem
dense
square summable
Riesz representation theorem
Kronecker delta
inner product
series representation
orthogonal wavelet
Multiresolution analysis
ISBN
0-12-174584-8
Categories
Wavelets

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