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Iwahori–Hecke algebra

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George Lusztig pushed this connection much further and was able to describe most of the characters of finite groups of Lie type in terms of representation theory of Hecke algebras. This work used a mixture of geometric techniques and various reductions, led to introduction of various objects
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I think it would be most appropriate to call it the Iwahori algebra, but the name Hecke ring (or algebra) given by Iwahori himself has been in use for almost 20 years and it is probably too late to change it
562: 1156: 2278:, allowing them to complete the classification in the general linear case. Many of the techniques can be extended to other reductive groups, which remains an area of active research. It has been 773:
Since in Coxeter groups with single laced Dynkin diagrams (for example Coxeter groups of type A and D) every pair of Coxeter generators is conjugated, the above-mentioned restriction of
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forces the multiparameter and the one-parameter Hecke algebras to be equal. Therefore, it is also very common to only look at one-parameter Hecke algebras.
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multiparameter Hecke algebra. This algebra is universal in the sense that every other multiparameter Hecke algebra can be obtained from it via the (unique)
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It follows from Iwahori's work that complex representations of Hecke algebras of finite type are intimately related with the structure of the spherical
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Representation theory of affine Hecke algebras was developed by Lusztig with a view towards applying it to description of representations of
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over local fields in terms of appropriately constructed Hecke algebras. (Important contributions were also made by Joseph Bernstein and
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may be permitted as well. For technical reasons it is also often convenient only to consider positive weight functions.
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of Hecke algebras and representations at roots of unity turned out to be related with the theory of canonical bases in
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3. Elements of the natural basis are invertible. For example, from the quadratic relation we conclude that
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Iwahori–Hecke algebras first appeared as an important special case of a very general construction in
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that all Hecke algebras that are ever needed are mild generalizations of affine Hecke algebras.
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in our notation). While this does not change the general theory, many formulae look different.
454:: in later books and papers, Lusztig used a modified form of the quadratic relation that reads 2490: 2471: 2429: 2408: 2387: 2349: 2261: 2222: 1908:
in Coxeter groups are defined through the behavior of the canonical basis under the action of
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On some Bruhat decomposition and the structure of the Hecke rings of p-adic Chevalley groups.
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is specialized to any complex number outside of an explicitly given list (consisting of
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respectively), then one obtains the so-called generic one-parameter Hecke algebra of (
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generalizing Hecke algebras and detailed understanding of their representations (for
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Work of Roger Howe in the 1970s and his papers with Allen Moy on representations of
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zero, then the one-parameter Hecke algebra is a semisimple associative algebra over
2117: 2102: 2072: 1927: 1770: 1429: 1312: 1297: 883:)), then a common specialization to look at is the one induced by the homomorphism 145: 2256:) opened a possibility of classifying irreducible admissible representations of 2194: 1992: 999: 106: 94: 2379:, Cambridge tracts in mathematics, vol. 163. Cambridge University Press, 2005. 1694:{\displaystyle C'_{w}=\left(q^{-1/2}\right)^{l(w)}\sum _{y\leq w}P_{y,w}T_{y},} 2279: 2152: 1949: 577: 114: 2463:, Annals of Mathematics Studies, vol. 129, Princeton University Press, 1993. 2059:) then the Hecke ring is commutative and its representations were studied by 1375:
A great discovery of Kazhdan and Lusztig was that a Hecke algebra admits a
2421:, University Lecture Series, vol.15, American Mathematical Society, 1999. 905:
If one uses the convention with half-integer powers, then weight function
2339: 2170:, the cardinality of the finite field. George Lusztig remarked in 1984 ( 2400:, CRM monograph series, vol.18, American Mathematical Society, 2003. 2221:. The resulting Hecke ring is isomorphic to the Hecke algebra of the 2108:
The case leading to the Hecke algebra of a finite Weyl group is when
1464:. It can further be proved that this automorphism is involutive (has 2419:
Iwahori-Hecke algebras and Schur algebras of the symmetric group
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Publications Mathématiques de l'IHÉS, 25 (1965), pp. 5–48.
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and if one writes its expansion in terms of the natural basis:
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After extending the scalars to include the half-integer powers
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Group Characters, Symmetric Functions, and the Hecke Algebra
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Linear and projective representations of symmetric groups
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The Kazhdan–Lusztig notions of left, right and two-sided
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then the resulting algebra turns out to be commutative.
1151:{\displaystyle T_{w}=T_{s_{1}}T_{s_{2}}\ldots T_{s_{n}}} 140:. Representations of Hecke algebras led to discovery of 16:
For other mathematical rings called Hecke algebras, see
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The admissible dual of GL(n) via compact open subgroups
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Iwahori and Matsumoto (1965) considered the case when
1158:. This basis of Hecke algebra is sometimes called the 1821: 1788: 1584: 1543: 1481: 1327:), then the resulting one-parameter Hecke algebra is 1080: 1012: 946: 460: 132:. This connection found a spectacular application in 2105:, which gave the name to Hecke algebras in general. 2172:Characters of reductive groups over a finite field 1839: 1803: 1693: 1561: 1515: 1150: 1054: 978: 556: 1886:} is obtained in a similar way. The polynomials 50:but its sources remain unclear because it lacks 2237:has been specialized to the cardinality of the 723:) as constructed above. One calls this process 1335:(which also corresponds to the specialization 2144:) is obtained from the generic Hecke algebra 990:indexed by the elements of the Coxeter group 807:If an integral weight function is defined on 8: 1897:) making appearance in this theorem are the 1331:and isomorphic to the complex group algebra 152:proposed Hecke algebras as a foundation for 2264:.) These ideas were taken much further in 1386:The generic multiparameter Hecke algebra, 1831: 1826: 1820: 1787: 1682: 1666: 1650: 1631: 1617: 1610: 1589: 1583: 1553: 1548: 1542: 1501: 1491: 1486: 1480: 1184:2. The elements of the natural basis are 1140: 1135: 1120: 1115: 1103: 1098: 1085: 1079: 1046: 1033: 1023: 1011: 964: 954: 945: 535: 528: 523: 510: 490: 486: 481: 468: 459: 81:Learn how and when to remove this message 2442:, J. Algebra 71 (1981), no. 2, 490–498. 1922:Hecke algebra of a locally compact group 1916:Hecke algebra of a locally compact group 1569:which is invariant under the involution 1055:{\displaystyle w=s_{1}s_{2}\ldots s_{n}} 735:If one specializes every indeterminate 580:to the previously defined one (but the 2398:Hecke algebras with unequal parameters 2358:Iwahori, Nagayoshi; Matsumoto, Hideya 1439:with respect to the bar involution of 1346:is a finite group and the ground ring 2132:. Iwahori showed that the Hecke ring 609:Generic Multiparameter Hecke Algebras 7: 2327:Macdonald's constant term conjecture 2459:Colin Bushnell and Philip Kutzko, 2162:by specializing the indeterminate 2097:) we get the abstract ring behind 676:-algebra and the scalar extension 14: 2440:On a theorem of Benson and Curtis 2286:Representations of Hecke algebras 1943:locally compact topological group 1729:has degree less than or equal to 1383:of a variety of related objects. 940:1. The Hecke algebra has a basis 2292:principal series representations 1516:{\displaystyle T_{w^{-1}}^{-1}.} 979:{\displaystyle (T_{w})_{w\in W}} 278:(and the above restriction that 160:Hecke algebras of Coxeter groups 27: 1840:{\displaystyle C_{w}^{\prime }} 1562:{\displaystyle C_{w}^{\prime }} 1379:basis, which in a way controls 1170:corresponds to the identity of 898:is a single indeterminate over 576:the resulting Hecke algebra is 164:Start with the following data: 154:topological quantum computation 1641: 1635: 1537:there exists a unique element 961: 947: 545: 503: 500: 461: 18:Hecke algebra (disambiguation) 1: 1995:. This algebra is denoted by 646:which maps the indeterminate 312:Multiparameter Hecke Algebras 2455:10.1016/0021-8693(81)90188-5 2294:of finite Chevalley groups. 1938:) be a pair consisting of a 1855:form a basis of the algebra 731:One-parameter Hecke Algebras 318:multiparameter Hecke algebra 2319:double affine Hecke algebra 1899:Kazhdan–Lusztig polynomials 1300:and the ground ring is the 803:Coxeter groups with weights 2512: 2233:, where the indeterminate 2189:is a group of points of a 1919: 1527:Kazhdan - Lusztig Theorem: 1371:Kazhdan–Lusztig polynomial 1368: 1319:that if the indeterminate 742:to a single indeterminate 668:. This homomorphism turns 113:, is a deformation of the 15: 2213:is what is now called an 2191:reductive algebraic group 2166:of the latter algebra to 1804:{\displaystyle y\nleq w.} 404:< ∞ factors and 397:..., where each side has 300:are conjugated), that is 1420:and acts as identity on 727:of the generic algebra. 180:with the Coxeter matrix 36:This article includes a 2304:Modular representations 2193:over a non-archimedean 1706:one has the following: 138:new invariants of knots 65:more precise citations. 2302:not a root of unity). 1859:, which is called the 1841: 1813: 1805: 1695: 1563: 1517: 1342:5. More generally, if 1152: 1056: 980: 746:over the integers (or 702:canonically isomorphic 558: 128:of the group rings of 2496:Representation theory 2373:Alexander Kleshchev, 2308:affine quantum groups 2063:. More generally if ( 1863:of the Hecke algebra 1842: 1806: 1696: 1564: 1524: 1518: 1428:admits a unique ring 1381:representation theory 1240:on the Coxeter group 1153: 1064:reduced decomposition 1057: 981: 704:to the Hecke algebra 559: 99:Iwahori–Hecke algebra 2325:in his proof of the 2231:affine Hecke algebra 1966:continuous functions 1960:. Then the space of 1861:dual canonical basis 1819: 1786: 1582: 1541: 1479: 1078: 1010: 944: 587:here corresponds to 458: 2310:and combinatorics. 1836: 1597: 1558: 1509: 1468:two) and takes any 544: 499: 416:Quadratic Relation: 262:Laurent polynomials 124:Hecke algebras are 2338:David Goldschmidt 1837: 1822: 1801: 1691: 1661: 1585: 1559: 1544: 1513: 1482: 1148: 1052: 976: 795:are conjugated in 554: 519: 477: 136:' construction of 130:Artin braid groups 38:list of references 2438:Lusztig, George, 2262:Andrey Zelevinsky 2223:affine Weyl group 2174:, xi, footnote): 2101:in the theory of 2007:) and called the 1646: 994:. In particular, 637:ring homomorphism 251:are conjugate in 221:} is a family of 111:Nagayoshi Iwahori 91: 90: 83: 2503: 2396:George Lusztig, 2258:reductive groups 2215:Iwahori subgroup 2061:Ian G. Macdonald 1846: 1844: 1843: 1838: 1835: 1830: 1810: 1808: 1807: 1802: 1744: 1742: 1741: 1738: 1735: 1700: 1698: 1697: 1692: 1687: 1686: 1677: 1676: 1660: 1645: 1644: 1630: 1626: 1625: 1621: 1593: 1568: 1566: 1565: 1560: 1557: 1552: 1522: 1520: 1519: 1514: 1508: 1500: 1499: 1498: 1463: 1462: 1292:4. Suppose that 1288: 1287: 1270: 1269: 1258: 1257: 1157: 1155: 1154: 1149: 1147: 1146: 1145: 1144: 1127: 1126: 1125: 1124: 1110: 1109: 1108: 1107: 1090: 1089: 1061: 1059: 1058: 1053: 1051: 1050: 1038: 1037: 1028: 1027: 985: 983: 982: 977: 975: 974: 959: 958: 928: 926: 925: 922: 919: 757: 756: 598: 597: 575: 574: 563: 561: 560: 555: 543: 539: 527: 515: 514: 498: 494: 485: 473: 472: 366:Braid Relations: 346:with generators 201:commutative ring 150:Michael Freedman 86: 79: 75: 72: 66: 61:this article by 52:inline citations 31: 30: 23: 2511: 2510: 2506: 2505: 2504: 2502: 2501: 2500: 2481: 2480: 2417:Andrew Mathas, 2335: 2288: 2275:theory of types 2208: 2150: 2114:Chevalley group 2099:Hecke operators 2058: 2041: 1977: 1970:compact support 1924: 1918: 1892: 1877: 1869:canonical basis 1817: 1816: 1784: 1783: 1781: 1739: 1736: 1733: 1732: 1730: 1724: 1715: 1678: 1662: 1606: 1602: 1601: 1580: 1579: 1539: 1538: 1487: 1477: 1476: 1473: 1461: 1456: 1455: 1454: 1448: 1391: 1373: 1367: 1365:Canonical basis 1309:complex numbers 1286: 1283: 1282: 1281: 1275: 1268: 1265: 1264: 1263: 1256: 1253: 1252: 1251: 1238:length function 1207: 1201: 1194: 1179: 1164:neutral element 1136: 1131: 1116: 1111: 1099: 1094: 1081: 1076: 1075: 1042: 1029: 1019: 1008: 1007: 960: 950: 942: 941: 938: 923: 920: 917: 916: 914: 888: 805: 785: 778: 755: 752: 751: 750: 740: 733: 709: 696: 681: 662: 651: 617: 611: 604: 596: 593: 592: 591: 585: 573: 570: 569: 568: 506: 464: 456: 455: 445: 438: 431: 402: 395: 391: 387: 380: 376: 372: 361:and relations: 351: 338:) is a unital, 324: 314: 290: 283: 276: 260:is the ring of 241: 234: 211: 192: 162: 87: 76: 70: 67: 56: 42:related reading 32: 28: 21: 12: 11: 5: 2509: 2507: 2499: 2498: 2493: 2483: 2482: 2479: 2478: 2457: 2436: 2415: 2394: 2371: 2356: 2334: 2331: 2323:Ivan Cherednik 2321:, was used by 2287: 2284: 2266:Colin Bushnell 2204: 2183: 2182: 2148: 2130:Borel subgroup 2124:elements, and 2112:is the finite 2054: 2037: 1975: 1920:Main article: 1917: 1914: 1890: 1875: 1834: 1829: 1825: 1812: 1811: 1800: 1797: 1794: 1791: 1779: 1774: 1722: 1717: 1713: 1704: 1703: 1702: 1701: 1690: 1685: 1681: 1675: 1672: 1669: 1665: 1659: 1656: 1653: 1649: 1643: 1640: 1637: 1634: 1629: 1624: 1620: 1616: 1613: 1609: 1605: 1600: 1596: 1592: 1588: 1556: 1551: 1547: 1512: 1507: 1504: 1497: 1494: 1490: 1485: 1471: 1457: 1446: 1389: 1369:Main article: 1366: 1363: 1352:characteristic 1350:is a field of 1325:roots of unity 1284: 1273: 1266: 1254: 1205: 1199: 1192: 1186:multiplicative 1177: 1143: 1139: 1134: 1130: 1123: 1119: 1114: 1106: 1102: 1097: 1093: 1088: 1084: 1049: 1045: 1041: 1036: 1032: 1026: 1022: 1018: 1015: 973: 970: 967: 963: 957: 953: 949: 937: 934: 886: 804: 801: 783: 776: 753: 738: 732: 729: 725:specialization 707: 692: 679: 660: 649: 615: 610: 607: 602: 594: 583: 571: 553: 550: 547: 542: 538: 534: 531: 526: 522: 518: 513: 509: 505: 502: 497: 493: 489: 484: 480: 476: 471: 467: 463: 449: 448: 443: 436: 429: 413: 400: 393: 389: 385: 378: 374: 370: 349: 322: 313: 310: 309: 308: 288: 281: 274: 270:indeterminates 255: 239: 232: 209: 204: 203:with identity. 194: 188: 178:Coxeter system 161: 158: 142:quantum groups 89: 88: 46:external links 35: 33: 26: 13: 10: 9: 6: 4: 3: 2: 2508: 2497: 2494: 2492: 2489: 2488: 2486: 2477: 2476:0-691-02114-7 2473: 2469: 2466: 2462: 2458: 2456: 2452: 2448: 2445: 2441: 2437: 2435: 2434:0-8218-1926-7 2431: 2427: 2424: 2420: 2416: 2414: 2413:0-8218-3356-1 2410: 2406: 2403: 2399: 2395: 2393: 2392:0-521-83703-0 2389: 2385: 2382: 2378: 2377: 2372: 2370: 2367: 2363: 2362: 2357: 2355: 2354:0-8218-3220-4 2351: 2347: 2344: 2341: 2337: 2336: 2332: 2330: 2328: 2324: 2320: 2316: 2311: 2309: 2305: 2301: 2295: 2293: 2285: 2283: 2281: 2277: 2276: 2271: 2270:Philip Kutzko 2267: 2263: 2259: 2255: 2251: 2246: 2244: 2240: 2239:residue field 2236: 2232: 2228: 2224: 2220: 2216: 2212: 2207: 2203: 2199: 2196: 2192: 2188: 2181: 2177: 2176: 2175: 2173: 2169: 2165: 2161: 2157: 2154: 2147: 2143: 2139: 2135: 2131: 2127: 2123: 2119: 2115: 2111: 2106: 2104: 2103:modular forms 2100: 2096: 2092: 2088: 2084: 2080: 2076: 2074: 2070: 2066: 2062: 2057: 2053: 2049: 2045: 2040: 2036: 2032: 2028: 2024: 2020: 2018: 2014: 2011:of the pair ( 2010: 2006: 2002: 1998: 1994: 1990: 1986: 1982: 1978: 1971: 1967: 1964:-biinvariant 1963: 1959: 1955: 1951: 1947: 1944: 1941: 1937: 1933: 1929: 1923: 1915: 1913: 1911: 1907: 1902: 1900: 1896: 1889: 1885: 1881: 1874: 1870: 1866: 1862: 1858: 1854: 1850: 1827: 1823: 1815:The elements 1798: 1795: 1792: 1789: 1778: 1775: 1772: 1768: 1764: 1760: 1756: 1752: 1748: 1728: 1721: 1718: 1712: 1709: 1708: 1707: 1688: 1683: 1679: 1673: 1670: 1667: 1663: 1657: 1654: 1651: 1647: 1638: 1632: 1627: 1622: 1618: 1614: 1611: 1607: 1603: 1598: 1594: 1590: 1586: 1578: 1577: 1576: 1575: 1574: 1572: 1549: 1545: 1536: 1532: 1528: 1523: 1510: 1505: 1502: 1495: 1492: 1488: 1483: 1474: 1467: 1460: 1453: 1449: 1442: 1438: 1434: 1431: 1427: 1423: 1419: 1415: 1411: 1408: 1404: 1400: 1396: 1392: 1384: 1382: 1378: 1372: 1364: 1362: 1361: 1357: 1353: 1349: 1345: 1340: 1338: 1334: 1330: 1326: 1322: 1318: 1314: 1310: 1306: 1303: 1299: 1295: 1290: 1280: 1276: 1262: 1250: 1245: 1243: 1239: 1235: 1231: 1227: 1223: 1219: 1215: 1211: 1204: 1198: 1191: 1187: 1182: 1180: 1173: 1169: 1165: 1161: 1160:natural basis 1141: 1137: 1132: 1128: 1121: 1117: 1112: 1104: 1100: 1095: 1091: 1086: 1082: 1073: 1069: 1065: 1047: 1043: 1039: 1034: 1030: 1024: 1020: 1016: 1013: 1005: 1003: 997: 993: 989: 971: 968: 965: 955: 951: 935: 933: 931: 912: 908: 903: 901: 897: 893: 889: 882: 878: 874: 870: 866: 862: 858: 854: 850: 846: 842: 838: 834: 830: 826: 822: 818: 814: 810: 802: 800: 798: 794: 790: 786: 779: 771: 769: 765: 761: 749: 745: 741: 730: 728: 726: 722: 718: 714: 710: 703: 699: 695: 690: 686: 682: 675: 671: 667: 663: 656: 652: 645: 641: 638: 634: 630: 626: 622: 618: 608: 606: 601: 590: 586: 579: 567: 551: 548: 540: 536: 532: 529: 524: 520: 516: 511: 507: 495: 491: 487: 482: 478: 474: 469: 465: 453: 446: 439: 432: 425: 421: 417: 414: 411: 407: 403: 396: 381: 367: 364: 363: 362: 360: 356: 352: 345: 343: 337: 333: 329: 325: 319: 311: 307: 303: 299: 295: 291: 284: 277: 271: 267: 263: 259: 256: 254: 250: 246: 242: 235: 228: 224: 220: 216: 212: 205: 202: 198: 195: 191: 187: 183: 179: 175: 171: 167: 166: 165: 159: 157: 155: 151: 147: 143: 139: 135: 134:Vaughan Jones 131: 127: 122: 120: 119:Coxeter group 116: 115:group algebra 112: 108: 105:, named for 104: 103:Hecke algebra 100: 96: 85: 82: 74: 64: 60: 54: 53: 47: 43: 39: 34: 25: 24: 19: 2460: 2439: 2374: 2360: 2318: 2314: 2312: 2299: 2296: 2289: 2273: 2253: 2249: 2247: 2242: 2234: 2226: 2218: 2210: 2205: 2201: 2197: 2186: 2184: 2178: 2171: 2167: 2163: 2159: 2155: 2145: 2141: 2137: 2133: 2125: 2121: 2118:finite field 2109: 2107: 2094: 2090: 2086: 2082: 2078: 2077: 2073:Gelfand pair 2068: 2064: 2055: 2051: 2047: 2043: 2038: 2034: 2030: 2026: 2022: 2021: 2016: 2012: 2008: 2004: 2000: 1996: 1988: 1984: 1980: 1973: 1961: 1957: 1953: 1945: 1935: 1931: 1928:group theory 1925: 1909: 1905: 1903: 1894: 1887: 1883: 1879: 1872: 1868: 1864: 1860: 1856: 1852: 1851:varies over 1848: 1814: 1776: 1771:Bruhat order 1766: 1762: 1758: 1754: 1750: 1746: 1726: 1719: 1710: 1705: 1570: 1534: 1530: 1526: 1525: 1469: 1458: 1451: 1444: 1440: 1432: 1430:automorphism 1425: 1421: 1417: 1413: 1409: 1402: 1398: 1394: 1387: 1385: 1376: 1374: 1359: 1355: 1347: 1343: 1341: 1336: 1332: 1320: 1313:Jacques Tits 1304: 1298:finite group 1293: 1291: 1278: 1271: 1260: 1248: 1246: 1241: 1236:denotes the 1233: 1229: 1225: 1221: 1217: 1213: 1209: 1202: 1196: 1189: 1185: 1183: 1175: 1171: 1167: 1159: 1071: 1067: 1001: 995: 991: 987: 939: 929: 910: 906: 904: 899: 895: 891: 884: 880: 876: 872: 868: 864: 860: 856: 852: 848: 844: 840: 836: 832: 828: 824: 820: 816: 812: 811:(i.e. a map 808: 806: 796: 792: 788: 781: 780:being equal 774: 772: 767: 763: 759: 747: 743: 736: 734: 724: 720: 716: 712: 705: 697: 693: 688: 684: 677: 673: 669: 665: 658: 657:to the unit 654: 647: 643: 639: 632: 628: 624: 620: 613: 612: 599: 588: 581: 565: 451: 450: 441: 434: 427: 423: 419: 415: 409: 405: 398: 383: 368: 365: 358: 354: 347: 341: 340:associative 335: 331: 327: 320: 317: 315: 305: 301: 297: 293: 286: 279: 272: 265: 257: 252: 248: 244: 237: 230: 226: 218: 214: 207: 196: 189: 185: 181: 173: 169: 163: 146:Michio Jimbo 123: 102: 98: 92: 77: 68: 57:Please help 49: 2280:conjectured 2195:local field 1993:convolution 107:Erich Hecke 95:mathematics 63:introducing 2485:Categories 2333:References 2200:, such as 2153:Weyl group 2009:Hecke ring 1940:unimodular 1437:semilinear 1412:that maps 1407:involution 1405:), has an 1329:semisimple 1188:, namely, 936:Properties 847:) for all 578:isomorphic 426:we have: ( 408:belong to 229:such that 2252:-adic GL( 2229:, or the 1952:subgroup 1833:′ 1793:≰ 1655:≤ 1648:∑ 1612:− 1555:′ 1529:For each 1503:− 1493:− 1443:and maps 1377:different 1232:), where 1208:whenever 1129:… 1040:… 969:∈ 787:whenever 691:) ⊗ 631:) is the 530:− 475:− 447:+ 1) = 0. 292:whenever 243:whenever 126:quotients 71:June 2020 2491:Algebras 2079:Example: 2023:Example: 1882:∈ 1761:)−1) if 1595:′ 1435:that is 1070:∈ 894:, where 855:∈ 664:∈ 653:∈ 418:For all 357:∈ 353:for all 344:-algebra 217:∈ 2468:1204652 2447:0630610 2426:1711316 2405:1974442 2384:2165457 2369:0185016 2346:1225799 2151:of the 2128:is its 2116:over a 2093:= SL(2, 2085:= SL(2, 2071:) is a 1930:. Let ( 1769:in the 1743:⁠ 1731:⁠ 1424:. Then 1339:↦ 1) . 1074:, then 1004:-module 927:⁠ 915:⁠ 672:into a 633:generic 452:Warning 176:) is a 59:improve 2474:  2432:  2411:  2390:  2352:  2209:, and 2089:) and 2042:) and 1950:closed 1948:and a 1867:. The 1847:where 1782:=0 if 1317:proved 1162:. The 382:... = 97:, the 2120:with 2046:= SL( 2029:= SL( 1906:cells 1466:order 1302:field 1296:is a 1289:−1). 1181:= 1. 1062:is a 1006:. If 1000:free 998:is a 986:over 859:with 823:with 268:with 264:over 223:units 199:is a 117:of a 101:, or 44:, or 2472:ISBN 2430:ISBN 2409:ISBN 2388:ISBN 2350:ISBN 2268:and 2180:now. 1765:< 1315:has 791:and 316:The 296:and 247:and 109:and 2451:doi 2272:'s 2241:of 2225:of 2217:of 2158:of 2081:If 2025:If 2019:). 1968:of 1956:of 1891:y,w 1780:y,w 1725:in 1723:y,w 1716:=1, 1714:w,w 1475:to 1450:to 1416:to 1410:bar 1307:of 1277:+ ( 1166:of 1066:of 770:). 758:to 700:is 422:in 406:s,t 225:of 184:= ( 144:by 93:In 2487:: 2470:, 2465:MR 2449:, 2444:MR 2428:, 2423:MR 2407:, 2402:MR 2386:, 2381:MR 2366:MR 2343:MR 2329:. 2245:. 2140:// 2003:// 1972:, 1912:. 1901:. 1878:| 1753:)− 1533:∈ 1311:. 1259:= 1244:. 1224:)+ 1216:)= 1214:yw 1193:yw 1174:: 913:→ 909:: 902:. 890:↦ 875:)+ 867:)= 865:vw 839:)+ 831:)= 829:vw 819:→ 815:: 642:→ 552:0. 440:)( 433:− 401:st 304:= 285:= 236:= 213:| 193:), 190:st 172:, 156:. 148:. 121:. 48:, 40:, 2453:: 2348:, 2315:p 2300:q 2254:n 2250:p 2243:K 2235:q 2227:G 2219:G 2211:K 2206:p 2202:Q 2198:K 2187:G 2168:p 2164:q 2160:G 2156:W 2149:q 2146:H 2142:B 2138:G 2136:( 2134:H 2126:B 2122:p 2110:G 2095:Z 2091:K 2087:Q 2083:G 2069:K 2067:, 2065:G 2056:p 2052:Z 2050:, 2048:n 2044:K 2039:p 2035:Q 2033:, 2031:n 2027:G 2017:K 2015:, 2013:G 2005:K 2001:G 1999:( 1997:H 1989:K 1987:/ 1985:G 1983:\ 1981:K 1979:( 1976:c 1974:C 1962:K 1958:G 1954:K 1946:G 1936:K 1934:, 1932:G 1910:H 1895:q 1893:( 1888:P 1884:W 1880:w 1876:w 1873:C 1871:{ 1865:H 1857:H 1853:W 1849:w 1828:w 1824:C 1799:. 1796:w 1790:y 1777:P 1773:, 1767:w 1763:y 1759:y 1757:( 1755:l 1751:w 1749:( 1747:l 1745:( 1740:2 1737:/ 1734:1 1727:Z 1720:P 1711:P 1689:, 1684:y 1680:T 1674:w 1671:, 1668:y 1664:P 1658:w 1652:y 1642:) 1639:w 1636:( 1633:l 1628:) 1623:2 1619:/ 1615:1 1608:q 1604:( 1599:= 1591:w 1587:C 1571:i 1550:w 1546:C 1535:W 1531:w 1511:. 1506:1 1496:1 1489:w 1484:T 1472:w 1470:T 1459:s 1452:T 1447:s 1445:T 1441:A 1433:i 1426:H 1422:Z 1418:q 1414:q 1403:q 1401:, 1399:S 1397:, 1395:W 1393:( 1390:A 1388:H 1360:R 1356:R 1348:R 1344:W 1337:q 1333:C 1321:q 1305:C 1294:W 1285:s 1279:q 1274:s 1272:T 1267:s 1261:q 1255:s 1249:T 1242:W 1234:l 1230:w 1228:( 1226:l 1222:y 1220:( 1218:l 1212:( 1210:l 1206:w 1203:T 1200:y 1197:T 1195:= 1190:T 1178:e 1176:T 1172:H 1168:W 1142:n 1138:s 1133:T 1122:2 1118:s 1113:T 1105:1 1101:s 1096:T 1092:= 1087:w 1083:T 1072:W 1068:w 1048:n 1044:s 1035:2 1031:s 1025:1 1021:s 1017:= 1014:w 1002:A 996:H 992:W 988:A 972:W 966:w 962:) 956:w 952:T 948:( 930:Z 924:2 921:/ 918:1 911:W 907:L 900:Z 896:q 892:q 887:s 885:q 881:w 879:( 877:l 873:v 871:( 869:l 863:( 861:l 857:W 853:w 851:, 849:v 845:w 843:( 841:L 837:v 835:( 833:L 827:( 825:L 821:Z 817:W 813:L 809:W 797:W 793:t 789:s 784:t 782:q 777:s 775:q 768:S 766:, 764:W 760:q 754:s 748:q 744:q 739:s 737:q 721:q 719:, 717:S 715:, 713:W 711:( 708:R 706:H 698:R 694:A 689:S 687:, 685:W 683:( 680:A 678:H 674:A 670:R 666:R 661:s 659:q 655:A 650:s 648:q 644:R 640:A 629:q 627:, 625:S 623:, 621:W 619:( 616:A 614:H 603:s 600:T 595:s 589:q 584:s 582:T 572:s 566:q 549:= 546:) 541:2 537:/ 533:1 525:s 521:q 517:+ 512:s 508:T 504:( 501:) 496:2 492:/ 488:1 483:s 479:q 470:s 466:T 462:( 444:s 442:T 437:s 435:q 430:s 428:T 424:S 420:s 412:. 410:S 399:m 394:t 392:T 390:s 388:T 386:t 384:T 379:s 377:T 375:t 373:T 371:s 369:T 359:S 355:s 350:s 348:T 342:R 336:q 334:, 332:S 330:, 328:W 326:( 323:R 321:H 306:Z 302:A 298:t 294:s 289:t 287:q 282:s 280:q 275:s 273:q 266:Z 258:A 253:W 249:t 245:s 240:t 238:q 233:s 231:q 227:R 219:S 215:s 210:s 208:q 206:{ 197:R 186:m 182:M 174:S 170:W 168:( 84:) 78:( 73:) 69:( 55:. 20:.

Index

Hecke algebra (disambiguation)
list of references
related reading
external links
inline citations
improve
introducing
Learn how and when to remove this message
mathematics
Erich Hecke
Nagayoshi Iwahori
group algebra
Coxeter group
quotients
Artin braid groups
Vaughan Jones
new invariants of knots
quantum groups
Michio Jimbo
Michael Freedman
topological quantum computation
Coxeter system
commutative ring
units
Laurent polynomials
indeterminates
associative R-algebra
isomorphic
ring homomorphism
canonically isomorphic

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