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Cyclotomic character

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1502: 1093: 933: 1352: 1292: 799: 239: 1770: 942: 660: 738: 577: 1357: 804: 1199: 144: 1497:{\displaystyle {\begin{aligned}\chi _{p}:G_{\mathbf {Q} }&\to \mathbf {Z} _{p}^{\times }\cong \mathrm {GL_{1}} (\mathbf {Z} _{p})\\\sigma &\mapsto (a(\sigma ,n))_{n}\end{aligned}}} 1783: 1633: 1600: 1531: 352: 1332: 1699: 522: 420: 1571: 1191: 488: 454: 386: 323: 1088:{\displaystyle G_{\mathbf {Q} }\to \mathrm {Aut} (\mu _{p^{n}})\cong (\mathbf {Z} /p^{n}\mathbf {Z} )^{\times }\cong \mathrm {GL} _{1}(\mathbf {Z} /p^{n}\mathbf {Z} )} 1661: 1136: 758: 928:{\displaystyle {\begin{aligned}{\chi _{p^{n}}}:G_{\mathbf {Q} }&\to (\mathbf {Z} /p^{n}\mathbf {Z} )^{\times }\\\sigma &\mapsto a(\sigma ,n),\end{aligned}}} 266: 584: 1156: 1116: 778: 667: 2100: 1668:-adic cyclotomic characters (when considering compatible systems of representations, the standard terminology is to use the symbol 2137: 527: 2092: 1916: 44: 2029: 936: 269: 36: 1287:{\displaystyle \varprojlim _{n}(\mathbf {Z} /p^{n}\mathbf {Z} )^{\times }\cong \mathbf {Z} _{p}^{\times },} 234:{\displaystyle \mu _{p^{n}}=\left\{\zeta \in {\bar {\mathbf {Q} }}^{\times }\mid \zeta ^{p^{n}}=1\right\}} 1942: 1866: 134: 1765:{\displaystyle \chi _{\ell }:G_{\mathbf {Q} }\rightarrow \operatorname {GL} _{1}(\mathbf {Z} _{\ell })} 1609: 1576: 1507: 328: 1301: 69: 56: 493: 391: 1876: 1856: 48: 1542: 1161: 459: 425: 357: 294: 1891: 1335: 781: 60: 2096: 2091:, Proceedings of the Symposium in Pure Mathematics (in French), vol. 33, Providence, RI: 2073: 2004: 1121: 743: 2114: 1986: 2110: 244: 17: 2118: 2106: 1895: 1811: 138: 2069: 1603: 1141: 1101: 763: 52: 2131: 1835: 1295: 1194: 28: 2084: 119: 40: 1807: 2048: 1975: 655:{\displaystyle \sigma .\zeta :=\sigma (\zeta )=\zeta _{p^{n}}^{a(\sigma ,n)}} 1775:
satisfying certain compatibilities between different primes. In fact, the
733:{\displaystyle a(\sigma ,n)\in (\mathbf {Z} /p^{n}\mathbf {Z} )^{\times }} 1644:
topology makes this a continuous representation of a topological group.
1193:
form a compatible system in the sense that they give an element of the
1636: 1970:-adic cyclotomic character satisfies several nice properties. 572:{\displaystyle (\mathbf {Z} /p^{n}\mathbf {Z} )^{\times }} 1834:. As such, its representation space can be viewed as the 388:
by automorphisms. After fixing a primitive root of unity
1702: 1612: 1579: 1545: 1510: 1355: 1304: 1202: 1164: 1144: 1124: 1104: 945: 802: 766: 746: 670: 587: 530: 496: 462: 428: 394: 360: 331: 297: 247: 147: 1890:. It can also be found in the étale cohomology of a 1784:
strictly compatible system of ℓ-adic representations
2089:
Automorphic Forms, Representations, and L-Functions
1764: 1627: 1594: 1565: 1525: 1496: 1326: 1286: 1185: 1150: 1130: 1110: 1087: 927: 772: 752: 740:is the unique element as above, depending on both 732: 654: 571: 516: 482: 448: 414: 380: 346: 317: 260: 233: 939:since the action corresponds to a homomorphism 8: 524:, where the exponent is a unique element in 1662:compatible system of ℓ-adic representations 1753: 1748: 1735: 1721: 1720: 1707: 1701: 1619: 1614: 1611: 1585: 1584: 1578: 1555: 1550: 1544: 1516: 1515: 1509: 1484: 1436: 1431: 1420: 1412: 1403: 1398: 1393: 1378: 1377: 1364: 1356: 1354: 1315: 1310: 1305: 1303: 1275: 1270: 1265: 1255: 1246: 1240: 1231: 1226: 1214: 1204: 1201: 1163: 1143: 1123: 1103: 1077: 1071: 1062: 1057: 1048: 1040: 1030: 1021: 1015: 1006: 1001: 984: 979: 961: 951: 950: 944: 880: 871: 865: 856: 851: 834: 833: 817: 812: 807: 803: 801: 765: 745: 724: 715: 709: 700: 695: 669: 631: 624: 619: 586: 563: 554: 548: 539: 534: 529: 506: 501: 495: 472: 467: 461: 438: 433: 427: 404: 399: 393: 370: 365: 359: 337: 336: 330: 307: 302: 296: 252: 246: 212: 207: 194: 183: 181: 180: 157: 152: 146: 2060: 325:are Galois conjugate, the Galois group 7: 291:Since all of the primitive roots in 1925:-adic cyclotomic character is the 1865:-adic cyclotomic character is the 1800:-adic cyclotomic character is the 1573:simultaneously. In fact equipping 1417: 1413: 1044: 1041: 968: 965: 962: 25: 1945:, the Tate motive is the dual of 79:(that is, it is a representation 1749: 1722: 1628:{\displaystyle \mathbf {Z} _{p}} 1615: 1595:{\displaystyle G_{\mathbf {Q} }} 1586: 1526:{\displaystyle G_{\mathbf {Q} }} 1517: 1432: 1394: 1379: 1266: 1247: 1227: 1078: 1058: 1022: 1002: 952: 872: 852: 835: 716: 696: 555: 535: 347:{\displaystyle G_{\mathbf {Q} }} 338: 184: 1327:{\displaystyle {\chi _{p^{n}}}} 268:, generated by any choice of a 1759: 1744: 1728: 1481: 1477: 1465: 1459: 1456: 1442: 1427: 1389: 1252: 1223: 1180: 1168: 1082: 1054: 1027: 998: 992: 972: 958: 915: 903: 897: 877: 848: 845: 721: 692: 686: 674: 647: 635: 609: 603: 560: 531: 517:{\displaystyle \zeta _{p^{n}}} 415:{\displaystyle \zeta _{p^{n}}} 188: 1: 2087:; Casselman, William (eds.), 1672:to denote a prime instead of 490:can be written as a power of 241:form a cyclic group of order 1566:{\displaystyle \mu _{p^{n}}} 1186:{\displaystyle a(\sigma ,n)} 483:{\displaystyle \mu _{p^{n}}} 449:{\displaystyle \mu _{p^{n}}} 381:{\displaystyle \mu _{p^{n}}} 318:{\displaystyle \mu _{p^{n}}} 1812:multiplicative group scheme 18:P-adic cyclotomic character 2154: 1660:over all prime numbers, a 1648:As a compatible system of 1345:-adic cyclotomic character 108:-adic cyclotomic character 2078:et périodes d'intégrales" 1931:-adic realization of the 1294:the units in the ring of 72:is generally denoted by 2138:Algebraic number theory 1504:encoding the action of 1131:{\displaystyle \sigma } 753:{\displaystyle \sigma } 55:. As a one-dimensional 2074:"Valeurs de fonctions 1790:Geometric realizations 1766: 1693:-adic representations 1629: 1596: 1567: 1539:-power roots of unity 1527: 1498: 1328: 1288: 1187: 1152: 1132: 1112: 1089: 929: 774: 754: 734: 656: 573: 518: 484: 450: 416: 382: 348: 319: 262: 235: 141:. The roots of unity 1844:th roots of unity in 1767: 1664:is obtained from the 1652:-adic representations 1630: 1597: 1568: 1528: 1499: 1329: 1289: 1188: 1153: 1133: 1113: 1090: 935:which is viewed as a 930: 775: 755: 735: 657: 579:. One can thus write 574: 519: 485: 451: 417: 383: 349: 320: 263: 261:{\displaystyle p^{n}} 236: 135:absolute Galois group 1898:: it is the dual of 1700: 1610: 1577: 1543: 1508: 1353: 1302: 1200: 1162: 1142: 1122: 1102: 943: 800: 792:cyclotomic character 764: 744: 668: 585: 528: 494: 460: 426: 392: 358: 329: 295: 245: 145: 70:representation space 33:cyclotomic character 1943:Grothendieck motive 1678:). That is to say, 1408: 1280: 651: 1892:projective variety 1762: 1625: 1592: 1563: 1523: 1494: 1492: 1392: 1336:group homomorphism 1324: 1284: 1264: 1219: 1212: 1183: 1148: 1128: 1108: 1085: 925: 923: 782:group homomorphism 770: 750: 730: 652: 615: 569: 514: 480: 446: 412: 378: 344: 315: 258: 231: 43:giving the Galois 2005:Frobenius element 1838:of the groups of 1689:is a "family" of 1205: 1203: 1151:{\displaystyle n} 1111:{\displaystyle p} 780:. This defines a 773:{\displaystyle p} 456:, any element of 277:th root of unity 191: 16:(Redirected from 2145: 2122: 2121: 2082: 2065: 2037: 2025: 2013: 2002: 1993:acts trivially). 1992: 1987:inertia subgroup 1984: 1969: 1955: 1940: 1930: 1924: 1911: 1889: 1877:étale cohomology 1874: 1864: 1851: 1850: 1843: 1833: 1827: 1805: 1799: 1781: 1771: 1769: 1768: 1763: 1758: 1757: 1752: 1740: 1739: 1727: 1726: 1725: 1712: 1711: 1692: 1688: 1677: 1671: 1667: 1659: 1651: 1641: 1634: 1632: 1631: 1626: 1624: 1623: 1618: 1601: 1599: 1598: 1593: 1591: 1590: 1589: 1572: 1570: 1569: 1564: 1562: 1561: 1560: 1559: 1538: 1532: 1530: 1529: 1524: 1522: 1521: 1520: 1503: 1501: 1500: 1495: 1493: 1489: 1488: 1441: 1440: 1435: 1426: 1425: 1424: 1407: 1402: 1397: 1384: 1383: 1382: 1369: 1368: 1344: 1333: 1331: 1330: 1325: 1323: 1322: 1321: 1320: 1319: 1293: 1291: 1290: 1285: 1279: 1274: 1269: 1260: 1259: 1250: 1245: 1244: 1235: 1230: 1218: 1213: 1192: 1190: 1189: 1184: 1157: 1155: 1154: 1149: 1137: 1135: 1134: 1129: 1117: 1115: 1114: 1109: 1094: 1092: 1091: 1086: 1081: 1076: 1075: 1066: 1061: 1053: 1052: 1047: 1035: 1034: 1025: 1020: 1019: 1010: 1005: 991: 990: 989: 988: 971: 957: 956: 955: 934: 932: 931: 926: 924: 885: 884: 875: 870: 869: 860: 855: 840: 839: 838: 825: 824: 823: 822: 821: 791: 779: 777: 776: 771: 759: 757: 756: 751: 739: 737: 736: 731: 729: 728: 719: 714: 713: 704: 699: 661: 659: 658: 653: 650: 630: 629: 628: 578: 576: 575: 570: 568: 567: 558: 553: 552: 543: 538: 523: 521: 520: 515: 513: 512: 511: 510: 489: 487: 486: 481: 479: 478: 477: 476: 455: 453: 452: 447: 445: 444: 443: 442: 421: 419: 418: 413: 411: 410: 409: 408: 387: 385: 384: 379: 377: 376: 375: 374: 353: 351: 350: 345: 343: 342: 341: 324: 322: 321: 316: 314: 313: 312: 311: 287: 276: 267: 265: 264: 259: 257: 256: 240: 238: 237: 232: 230: 226: 219: 218: 217: 216: 199: 198: 193: 192: 187: 182: 164: 163: 162: 161: 139:rational numbers 132: 117: 100: 99: 78: 67: 21: 2153: 2152: 2148: 2147: 2146: 2144: 2143: 2142: 2128: 2127: 2126: 2125: 2103: 2095:, p. 325, 2080: 2070:Deligne, Pierre 2068: 2066: 2062: 2057: 2045: 2033: 2023: 2019: 2015: 2008: 2001: 1997: 1990: 1979: 1965: 1962: 1946: 1935: 1926: 1920: 1905: 1899: 1896:projective line 1888: 1880: 1870: 1860: 1846: 1845: 1839: 1829: 1826: 1814: 1801: 1795: 1792: 1780: 1776: 1747: 1731: 1716: 1703: 1698: 1697: 1690: 1687: 1683: 1679: 1673: 1669: 1665: 1657: 1654: 1649: 1637: 1613: 1608: 1607: 1580: 1575: 1574: 1551: 1546: 1541: 1540: 1534: 1511: 1506: 1505: 1491: 1490: 1480: 1452: 1446: 1445: 1430: 1416: 1385: 1373: 1360: 1351: 1350: 1340: 1311: 1306: 1300: 1299: 1296:p-adic integers 1251: 1236: 1198: 1197: 1160: 1159: 1140: 1139: 1120: 1119: 1100: 1099: 1067: 1039: 1026: 1011: 980: 975: 946: 941: 940: 922: 921: 893: 887: 886: 876: 861: 841: 829: 813: 808: 798: 797: 787: 762: 761: 742: 741: 720: 705: 666: 665: 620: 583: 582: 559: 544: 526: 525: 502: 497: 492: 491: 468: 463: 458: 457: 434: 429: 424: 423: 400: 395: 390: 389: 366: 361: 356: 355: 332: 327: 326: 303: 298: 293: 292: 286: 278: 272: 248: 243: 242: 208: 203: 179: 172: 168: 153: 148: 143: 142: 131: 123: 113: 110: 89: 81: 80: 73: 63: 23: 22: 15: 12: 11: 5: 2151: 2149: 2141: 2140: 2130: 2129: 2124: 2123: 2101: 2059: 2058: 2056: 2053: 2052: 2051: 2044: 2041: 2040: 2039: 2026: 2021: 2017: 1999: 1994: 1978:at all primes 1961: 1958: 1903: 1884: 1818: 1791: 1788: 1778: 1773: 1772: 1761: 1756: 1751: 1746: 1743: 1738: 1734: 1730: 1724: 1719: 1715: 1710: 1706: 1685: 1681: 1653: 1646: 1622: 1617: 1604:Krull topology 1588: 1583: 1558: 1554: 1549: 1519: 1514: 1487: 1483: 1479: 1476: 1473: 1470: 1467: 1464: 1461: 1458: 1455: 1453: 1451: 1448: 1447: 1444: 1439: 1434: 1429: 1423: 1419: 1415: 1411: 1406: 1401: 1396: 1391: 1388: 1386: 1381: 1376: 1372: 1367: 1363: 1359: 1358: 1334:assemble to a 1318: 1314: 1309: 1283: 1278: 1273: 1268: 1263: 1258: 1254: 1249: 1243: 1239: 1234: 1229: 1225: 1222: 1217: 1211: 1208: 1182: 1179: 1176: 1173: 1170: 1167: 1147: 1127: 1107: 1084: 1080: 1074: 1070: 1065: 1060: 1056: 1051: 1046: 1043: 1038: 1033: 1029: 1024: 1018: 1014: 1009: 1004: 1000: 997: 994: 987: 983: 978: 974: 970: 967: 964: 960: 954: 949: 920: 917: 914: 911: 908: 905: 902: 899: 896: 894: 892: 889: 888: 883: 879: 874: 868: 864: 859: 854: 850: 847: 844: 842: 837: 832: 828: 820: 816: 811: 806: 805: 769: 749: 727: 723: 718: 712: 708: 703: 698: 694: 691: 688: 685: 682: 679: 676: 673: 649: 646: 643: 640: 637: 634: 627: 623: 618: 614: 611: 608: 605: 602: 599: 596: 593: 590: 566: 562: 557: 551: 547: 542: 537: 533: 509: 505: 500: 475: 471: 466: 441: 437: 432: 407: 403: 398: 373: 369: 364: 340: 335: 310: 306: 301: 282: 255: 251: 229: 225: 222: 215: 211: 206: 202: 197: 190: 186: 178: 175: 171: 167: 160: 156: 151: 127: 109: 103: 87: 57:representation 53:roots of unity 24: 14: 13: 10: 9: 6: 4: 3: 2: 2150: 2139: 2136: 2135: 2133: 2120: 2116: 2112: 2108: 2104: 2102:0-8218-1437-0 2098: 2094: 2090: 2086: 2085:Borel, Armand 2079: 2077: 2071: 2067:Section 3 of 2064: 2061: 2054: 2050: 2047: 2046: 2042: 2036: 2031: 2027: 2012: 2006: 1995: 1988: 1983: 1977: 1973: 1972: 1971: 1968: 1959: 1957: 1953: 1949: 1944: 1938: 1934: 1929: 1923: 1918: 1913: 1909: 1902: 1897: 1894:, namely the 1893: 1887: 1883: 1878: 1873: 1869:of the first 1868: 1863: 1858: 1853: 1849: 1842: 1837: 1836:inverse limit 1832: 1825: 1821: 1817: 1813: 1809: 1804: 1798: 1789: 1787: 1785: 1754: 1741: 1736: 1732: 1717: 1713: 1708: 1704: 1696: 1695: 1694: 1676: 1663: 1647: 1645: 1643: 1640: 1620: 1605: 1581: 1556: 1552: 1547: 1537: 1512: 1485: 1474: 1471: 1468: 1462: 1454: 1449: 1437: 1421: 1409: 1404: 1399: 1387: 1374: 1370: 1365: 1361: 1348: 1346: 1343: 1337: 1316: 1312: 1307: 1297: 1281: 1276: 1271: 1261: 1256: 1241: 1237: 1232: 1220: 1215: 1209: 1206: 1196: 1195:inverse limit 1177: 1174: 1171: 1165: 1145: 1125: 1105: 1096: 1072: 1068: 1063: 1049: 1036: 1031: 1016: 1012: 1007: 995: 985: 981: 976: 947: 938: 918: 912: 909: 906: 900: 895: 890: 881: 866: 862: 857: 843: 830: 826: 818: 814: 809: 795: 793: 790: 783: 767: 747: 725: 710: 706: 701: 689: 683: 680: 677: 671: 662: 644: 641: 638: 632: 625: 621: 616: 612: 606: 600: 597: 594: 591: 588: 580: 564: 549: 545: 540: 507: 503: 498: 473: 469: 464: 439: 435: 430: 405: 401: 396: 371: 367: 362: 333: 308: 304: 299: 289: 285: 281: 275: 271: 253: 249: 227: 223: 220: 213: 209: 204: 200: 195: 176: 173: 169: 165: 158: 154: 149: 140: 136: 130: 126: 121: 116: 107: 104: 102: 97: 94:(1)) ≈ GL(1, 93: 85: 76: 71: 66: 62: 58: 54: 50: 46: 42: 38: 34: 30: 29:number theory 19: 2088: 2075: 2063: 2034: 2010: 1981: 1966: 1963: 1951: 1947: 1936: 1932: 1927: 1921: 1915:In terms of 1914: 1907: 1900: 1885: 1881: 1871: 1861: 1855:In terms of 1854: 1847: 1840: 1830: 1823: 1819: 1815: 1802: 1796: 1793: 1774: 1674: 1655: 1638: 1535: 1349: 1341: 1339: 1138:and varying 1097: 796: 788: 785: 663: 581: 290: 283: 279: 273: 128: 124: 114: 111: 105: 95: 91: 83: 74: 64: 41:Galois group 32: 26: 2030:crystalline 1933:Tate motive 1808:Tate module 1656:By varying 1298:. Thus the 784:called the 422:generating 133:denote the 2119:0449.10022 2055:References 2049:Tate twist 2024:) = ℓ 1985:(i.e. the 1976:unramified 1960:Properties 1857:cohomology 122:, and let 1879:group of 1755:ℓ 1742:⁡ 1729:→ 1709:ℓ 1705:χ 1635:with the 1602:with the 1548:μ 1469:σ 1457:↦ 1450:σ 1410:≅ 1405:× 1390:→ 1362:χ 1308:χ 1277:× 1262:≅ 1257:× 1221:⁡ 1210:← 1172:σ 1126:σ 1037:≅ 1032:× 996:≅ 977:μ 959:→ 937:character 907:σ 898:↦ 891:σ 882:× 846:→ 810:χ 748:σ 726:× 690:∈ 678:σ 639:σ 617:ζ 607:ζ 601:σ 595:ζ 589:σ 565:× 499:ζ 465:μ 431:μ 397:ζ 363:μ 300:μ 270:primitive 205:ζ 201:∣ 196:× 189:¯ 177:∈ 174:ζ 150:μ 82:χ : 37:character 2132:Category 2072:(1979), 2043:See also 354:acts on 2111:0546622 2014:, then 1941:. As a 1917:motives 1810:of the 1782:form a 1680:χ = { χ 1533:on all 1338:called 1098:Fixing 137:of the 59:over a 2117:  2109:  2099:  2028:It is 1974:It is 1919:, the 1875:-adic 1859:, the 1806:-adic 1158:, the 664:where 68:, its 45:action 2083:, in 2081:(PDF) 2020:(Frob 2003:is a 1828:over 1642:-adic 120:prime 86:→ Aut 49:group 47:on a 39:of a 35:is a 2097:ISBN 2009:ℓ ≠ 2007:for 1998:Frob 1980:ℓ ≠ 1964:The 1867:dual 1794:The 1606:and 1118:and 786:mod 760:and 112:Fix 61:ring 31:, a 2115:Zbl 2093:AMS 2032:at 1996:If 1989:at 1939:(1) 1207:lim 288:. 101:). 77:(1) 51:of 27:In 2134:: 2113:, 2107:MR 2105:, 1956:. 1950:( 1912:. 1904:ét 1852:. 1786:. 1733:GL 1347:: 1095:. 794:: 598::= 118:a 2076:L 2038:. 2035:p 2022:ℓ 2018:p 2016:χ 2011:p 2000:ℓ 1991:ℓ 1982:p 1967:p 1954:) 1952:P 1948:H 1937:Z 1928:p 1922:p 1910:) 1908:P 1906:( 1901:H 1886:m 1882:G 1872:p 1862:p 1848:Q 1841:p 1831:Q 1824:Q 1822:, 1820:m 1816:G 1803:p 1797:p 1779:ℓ 1777:χ 1760:) 1750:Z 1745:( 1737:1 1723:Q 1718:G 1714:: 1691:ℓ 1686:ℓ 1684:} 1682:ℓ 1675:p 1670:ℓ 1666:ℓ 1658:ℓ 1650:ℓ 1639:p 1621:p 1616:Z 1587:Q 1582:G 1557:n 1553:p 1536:p 1518:Q 1513:G 1486:n 1482:) 1478:) 1475:n 1472:, 1466:( 1463:a 1460:( 1443:) 1438:p 1433:Z 1428:( 1422:1 1418:L 1414:G 1400:p 1395:Z 1380:Q 1375:G 1371:: 1366:p 1342:p 1317:n 1313:p 1282:, 1272:p 1267:Z 1253:) 1248:Z 1242:n 1238:p 1233:/ 1228:Z 1224:( 1216:n 1181:) 1178:n 1175:, 1169:( 1166:a 1146:n 1106:p 1083:) 1079:Z 1073:n 1069:p 1064:/ 1059:Z 1055:( 1050:1 1045:L 1042:G 1028:) 1023:Z 1017:n 1013:p 1008:/ 1003:Z 999:( 993:) 986:n 982:p 973:( 969:t 966:u 963:A 953:Q 948:G 919:, 916:) 913:n 910:, 904:( 901:a 878:) 873:Z 867:n 863:p 858:/ 853:Z 849:( 836:Q 831:G 827:: 819:n 815:p 789:p 768:p 722:) 717:Z 711:n 707:p 702:/ 697:Z 693:( 687:) 684:n 681:, 675:( 672:a 648:) 645:n 642:, 636:( 633:a 626:n 622:p 613:= 610:) 604:( 592:. 561:) 556:Z 550:n 546:p 541:/ 536:Z 532:( 508:n 504:p 474:n 470:p 440:n 436:p 406:n 402:p 372:n 368:p 339:Q 334:G 309:n 305:p 284:p 280:ζ 274:p 254:n 250:p 228:} 224:1 221:= 214:n 210:p 185:Q 170:{ 166:= 159:n 155:p 129:Q 125:G 115:p 106:p 98:) 96:R 92:R 90:( 88:R 84:G 75:R 65:R 20:)

Index

P-adic cyclotomic character
number theory
character
Galois group
action
group
roots of unity
representation
ring
representation space
prime
absolute Galois group
rational numbers
primitive
group homomorphism
character
inverse limit
p-adic integers
group homomorphism
Krull topology
p-adic
compatible system of ℓ-adic representations
strictly compatible system of ℓ-adic representations
Tate module
multiplicative group scheme
inverse limit
cohomology
dual
étale cohomology
projective variety

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