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Associated prime

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1639: 851: 1275: 312: 745: 204: 104: 584: 1347: 498: 433: 369: 994: 954:, the map from the isomorphism classes of indecomposable injective modules to the spectrum is a bijection. Moreover, a complete set of representatives for those classes is given by 1412: 934: 1053: 1143: 1024: 670: 534: 1607: 1574: 1148: 774: 237: 19:
This article mainly concerns associated primes in general ring theory. For the specific usage in commutative ring theory, see also
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on ideals (for example, any right or left Noetherian ring) every nonzero module has at least one associated prime.
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For a one-sided Noetherian ring, there is a surjection from the set of isomorphism classes of indecomposable
458: 393: 329: 1454:(considered as a free module over itself), but its associated prime ideal (2) is not an associated prime of 957: 1352: 1670: 896: 1665: 1078: 20: 1638: 1033: 590:
while the rest of the associated primes (i.e., those properly containing associated primes) are called
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has either zero or one associated primes, making uniform modules an example of coprimary modules.
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It is possible, even for a commutative local ring, that the set of associated primes of a
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Also linked with the concept of "associated primes" of the ideal are the notions of
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Picavet, Gabriel (1985). "Propriétés et applications de la notion de contenu".
443:. In commutative algebra the usual definition is different, but equivalent: if 1634: 1491: 632:
is coprimary if and only if it has exactly one associated prime. A submodule
118:(word play between the notation and the fact that an associated prime is an 21:
Primary decomposition § Primary decomposition from associated primes
1270:{\displaystyle I=((x^{2}+y^{2}+z^{2}+w^{2})\cdot (z^{3}-w^{3}-3x^{3}))} 846:{\displaystyle \mathrm {Ass} _{R}(M')\subseteq \mathrm {Ass} _{R}(M).} 1079:
Primary decomposition#Primary decomposition from associated primes
1069:
over any ring, there are only finitely many associated primes of
307:{\displaystyle \mathrm {Ann} _{R}(N)=\mathrm {Ann} _{R}(N')\,} 1598:, Graduate Texts in Mathematics No. 189, Berlin, New York: 747:; thus, the notion is a generalization of a primary ideal. 586:(with respect to the set-theoretic inclusion) are called 1077:
For the case for commutative Noetherian rings, see also
1439:
a finite abelian group, then the associated primes of
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Most of these properties and assertions are given in (
64:. The set of associated primes is usually denoted by 1355: 1283: 1151: 1096: 1036: 1002: 960: 899: 777: 694: 650: 553: 514: 461: 396: 332: 240: 162: 70: 16:
Prime ideal that is an annihilator a prime submodule
1450:The group of order 2 is a quotient of the integers 740:{\displaystyle \operatorname {Ass} _{R}(R/I)=\{P\}} 1406: 1341: 1269: 1137: 1047: 1018: 988: 928: 845: 739: 664: 578: 528: 492: 427: 363: 306: 198: 98: 872:is empty. However, in any ring satisfying the 199:{\displaystyle \operatorname {Ass} _{R}(R/J).} 156:, and this set of prime ideals coincides with 1443:are exactly the primes dividing the order of 8: 734: 728: 99:{\displaystyle \operatorname {Ass} _{R}(M),} 579:{\displaystyle \operatorname {Ass} _{R}(M)} 1420:is the ring of integers, then non-trivial 144:is decomposed as a finite intersection of 1392: 1376: 1363: 1354: 1342:{\displaystyle (x^{2}+y^{2}+z^{2}+w^{2})} 1330: 1317: 1304: 1291: 1282: 1255: 1239: 1226: 1207: 1194: 1181: 1168: 1150: 1104: 1103: 1095: 1044: 1038: 1037: 1035: 1015: 1001: 985: 976: 975: 970: 959: 900: 898: 825: 814: 790: 779: 776: 714: 699: 693: 654: 649: 620: = 0 for some positive integer 558: 552: 518: 513: 489: 474: 463: 460: 424: 409: 398: 395: 360: 345: 334: 331: 303: 283: 272: 253: 242: 239: 182: 167: 161: 75: 69: 1468: 624:. A nonzero finitely generated module 493:{\displaystyle \mathrm {Ann} _{R}(m)\,} 428:{\displaystyle \mathrm {Ann} _{R}(N)\,} 364:{\displaystyle \mathrm {Ann} _{R}(N)\,} 989:{\displaystyle E(R/{\mathfrak {p}})\,} 129:, associated primes are linked to the 1407:{\displaystyle (z^{3}-w^{3}-3x^{3}).} 7: 950:: For a commutative Noetherian ring 944:, then this map becomes a bijection. 447:is commutative, an associated prime 131:Lasker–Noether primary decomposition 1565:, vol. 150, Berlin, New York: 1528: 1516: 1504: 1428:of prime power order are coprimary. 1039: 977: 929:{\displaystyle \mathrm {Spec} (R).} 865:, their associated primes coincide. 756: 910: 907: 904: 901: 821: 818: 815: 786: 783: 780: 470: 467: 464: 405: 402: 399: 341: 338: 335: 279: 276: 273: 249: 246: 243: 14: 1048:{\displaystyle {\mathfrak {p}}\,} 1637: 1055:ranges over the prime ideals of 605: = 0 for some nonzero 536:is isomorphic to a submodule of 1145:the associated prime ideals of 1398: 1356: 1336: 1284: 1264: 1261: 1219: 1213: 1161: 1158: 1138:{\displaystyle R=\mathbb {C} } 1132: 1108: 1012: 1006: 982: 964: 920: 914: 837: 831: 807: 796: 722: 708: 573: 567: 486: 480: 421: 415: 357: 351: 300: 289: 265: 259: 190: 176: 90: 84: 1: 1596:Lectures on modules and rings 1563:Graduate Texts in Mathematics 455:is a prime ideal of the form 1435:is the ring of integers and 152:of these primary ideals are 140:. Specifically, if an ideal 1687: 314:for any nonzero submodule 60:of a (prime) submodule of 18: 1492:10.1080/00927878508823275 1479:Communications in Algebra 874:ascending chain condition 870:finitely generated module 106:and sometimes called the 439:is a prime submodule of 390:is an ideal of the form 759:) starting on page 86. 1507:, p. 117, Ex 40B. 1408: 1343: 1271: 1139: 1049: 1020: 1019:{\displaystyle E(-)\,} 990: 930: 847: 741: 666: 580: 547:, minimal elements in 543:In a commutative ring 530: 500:for a nonzero element 494: 429: 365: 308: 200: 100: 1409: 1344: 1272: 1140: 1050: 1021: 991: 931: 848: 742: 667: 581: 531: 495: 430: 366: 322:. For a prime module 309: 201: 101: 1353: 1281: 1149: 1094: 1034: 1000: 958: 897: 775: 692: 648: 551: 512: 459: 394: 371:is a prime ideal in 330: 238: 160: 68: 1661:Commutative algebra 1629:Commutative algebra 1625:Matsumura, Hideyuki 1559:Commutative algebra 1549:Algèbre commutative 1422:free abelian groups 859:essential submodule 665:{\displaystyle M/N} 628:over a commutative 597:A module is called 529:{\displaystyle R/P} 234:if the annihilator 127:commutative algebra 1645:Mathematics portal 1404: 1339: 1267: 1135: 1045: 1016: 986: 926: 843: 737: 672:is coprimary with 662: 576: 526: 490: 425: 361: 304: 196: 96: 56:that arises as an 1609:978-0-387-98428-5 1576:978-0-387-94268-1 1486:(10): 2231–2265. 1064:Noetherian module 888:injective modules 1678: 1647: 1642: 1641: 1631: 1620: 1587: 1545:Nicolas Bourbaki 1532: 1526: 1520: 1514: 1508: 1502: 1496: 1495: 1473: 1424:and non-trivial 1413: 1411: 1410: 1405: 1397: 1396: 1381: 1380: 1368: 1367: 1348: 1346: 1345: 1340: 1335: 1334: 1322: 1321: 1309: 1308: 1296: 1295: 1276: 1274: 1273: 1268: 1260: 1259: 1244: 1243: 1231: 1230: 1212: 1211: 1199: 1198: 1186: 1185: 1173: 1172: 1144: 1142: 1141: 1136: 1107: 1054: 1052: 1051: 1046: 1043: 1042: 1025: 1023: 1022: 1017: 995: 993: 992: 987: 981: 980: 974: 935: 933: 932: 927: 913: 852: 850: 849: 844: 830: 829: 824: 806: 795: 794: 789: 746: 744: 743: 738: 718: 704: 703: 671: 669: 668: 663: 658: 585: 583: 582: 577: 563: 562: 535: 533: 532: 527: 522: 508:or equivalently 499: 497: 496: 491: 479: 478: 473: 434: 432: 431: 426: 414: 413: 408: 380:associated prime 370: 368: 367: 362: 350: 349: 344: 313: 311: 310: 305: 299: 288: 287: 282: 258: 257: 252: 205: 203: 202: 197: 186: 172: 171: 138:Noetherian rings 117: 105: 103: 102: 97: 80: 79: 32:associated prime 28:abstract algebra 1686: 1685: 1681: 1680: 1679: 1677: 1676: 1675: 1651: 1650: 1643: 1636: 1623: 1610: 1600:Springer-Verlag 1590: 1577: 1567:Springer-Verlag 1555:Eisenbud, David 1553: 1541: 1536: 1535: 1527: 1523: 1515: 1511: 1503: 1499: 1475: 1474: 1470: 1465: 1388: 1372: 1359: 1351: 1350: 1326: 1313: 1300: 1287: 1279: 1278: 1277:are the ideals 1251: 1235: 1222: 1203: 1190: 1177: 1164: 1147: 1146: 1092: 1091: 1087: 1032: 1031: 998: 997: 956: 955: 948:Matlis' Theorem 895: 894: 853:If in addition 813: 799: 778: 773: 772: 753: 695: 690: 689: 688:if and only if 646: 645: 630:Noetherian ring 592:embedded primes 588:isolated primes 554: 549: 548: 510: 509: 462: 457: 456: 397: 392: 391: 333: 328: 327: 292: 271: 241: 236: 235: 220: 212:embedded primes 208:isolated primes 163: 158: 157: 115: 71: 66: 65: 24: 17: 12: 11: 5: 1684: 1682: 1674: 1673: 1668: 1663: 1653: 1652: 1649: 1648: 1633: 1632: 1621: 1608: 1592:Lam, Tsit Yuen 1588: 1575: 1551: 1540: 1537: 1534: 1533: 1521: 1509: 1497: 1467: 1466: 1464: 1461: 1460: 1459: 1448: 1429: 1426:abelian groups 1414: 1403: 1400: 1395: 1391: 1387: 1384: 1379: 1375: 1371: 1366: 1362: 1358: 1338: 1333: 1329: 1325: 1320: 1316: 1312: 1307: 1303: 1299: 1294: 1290: 1286: 1266: 1263: 1258: 1254: 1250: 1247: 1242: 1238: 1234: 1229: 1225: 1221: 1218: 1215: 1210: 1206: 1202: 1197: 1193: 1189: 1184: 1180: 1176: 1171: 1167: 1163: 1160: 1157: 1154: 1134: 1131: 1128: 1125: 1122: 1119: 1116: 1113: 1110: 1106: 1102: 1099: 1086: 1083: 1075: 1074: 1060: 1041: 1028:injective hull 1014: 1011: 1008: 1005: 984: 979: 973: 969: 966: 963: 945: 925: 922: 919: 916: 912: 909: 906: 903: 884: 881:uniform module 877: 866: 842: 839: 836: 833: 828: 823: 820: 817: 812: 809: 805: 802: 798: 793: 788: 785: 782: 752: 749: 736: 733: 730: 727: 724: 721: 717: 713: 710: 707: 702: 698: 661: 657: 653: 575: 572: 569: 566: 561: 557: 525: 521: 517: 488: 485: 482: 477: 472: 469: 466: 423: 420: 417: 412: 407: 404: 401: 359: 356: 353: 348: 343: 340: 337: 302: 298: 295: 291: 286: 281: 278: 275: 270: 267: 264: 261: 256: 251: 248: 245: 219: 216: 195: 192: 189: 185: 181: 178: 175: 170: 166: 146:primary ideals 95: 92: 89: 86: 83: 78: 74: 15: 13: 10: 9: 6: 4: 3: 2: 1683: 1672: 1671:Module theory 1669: 1667: 1664: 1662: 1659: 1658: 1656: 1646: 1640: 1635: 1630: 1626: 1622: 1619: 1615: 1611: 1605: 1601: 1597: 1593: 1589: 1586: 1582: 1578: 1572: 1568: 1564: 1560: 1556: 1552: 1550: 1546: 1543: 1542: 1538: 1531:, p. 86. 1530: 1525: 1522: 1519:, p. 85. 1518: 1513: 1510: 1506: 1501: 1498: 1493: 1489: 1485: 1481: 1480: 1472: 1469: 1462: 1457: 1453: 1449: 1446: 1442: 1438: 1434: 1430: 1427: 1423: 1419: 1415: 1401: 1393: 1389: 1385: 1382: 1377: 1373: 1369: 1364: 1360: 1331: 1327: 1323: 1318: 1314: 1310: 1305: 1301: 1297: 1292: 1288: 1256: 1252: 1248: 1245: 1240: 1236: 1232: 1227: 1223: 1216: 1208: 1204: 1200: 1195: 1191: 1187: 1182: 1178: 1174: 1169: 1165: 1155: 1152: 1129: 1126: 1123: 1120: 1117: 1114: 1111: 1100: 1097: 1089: 1088: 1084: 1082: 1080: 1072: 1068: 1065: 1061: 1058: 1029: 1009: 1003: 971: 967: 961: 953: 949: 946: 943: 942:Artinian ring 939: 923: 917: 893: 889: 885: 882: 878: 875: 871: 867: 864: 860: 856: 840: 834: 826: 810: 803: 800: 791: 770: 766: 762: 761: 760: 758: 750: 748: 731: 725: 719: 715: 711: 705: 700: 696: 687: 686:primary ideal 683: 679: 675: 659: 655: 651: 643: 639: 635: 631: 627: 623: 619: 616: 612: 609: ∈  608: 604: 600: 595: 593: 589: 570: 564: 559: 555: 546: 541: 539: 523: 519: 515: 507: 503: 483: 475: 454: 450: 446: 442: 438: 418: 410: 389: 385: 381: 376: 374: 354: 346: 325: 321: 317: 296: 293: 284: 268: 262: 254: 233: 229: 225: 217: 215: 213: 209: 193: 187: 183: 179: 173: 168: 164: 155: 151: 147: 143: 139: 136: 133:of ideals in 132: 128: 123: 121: 113: 109: 93: 87: 81: 76: 72: 63: 59: 55: 51: 48:is a type of 47: 44: 40: 37: 33: 29: 22: 1666:Prime ideals 1628: 1595: 1558: 1548: 1524: 1512: 1500: 1483: 1477: 1471: 1455: 1451: 1444: 1440: 1436: 1432: 1417: 1076: 1070: 1066: 1056: 1026:denotes the 951: 947: 937: 862: 854: 768: 764: 754: 681: 677: 676:. An ideal 673: 644:-primary if 641: 637: 633: 625: 621: 617: 614: 610: 606: 602: 598: 596: 591: 587: 544: 542: 537: 505: 501: 452: 448: 444: 440: 436: 387: 383: 379: 377: 372: 323: 319: 315: 232:prime module 231: 230:is called a 227: 223: 221: 211: 207: 154:prime ideals 141: 124: 119: 112:assassinator 111: 107: 61: 53: 45: 38: 31: 25: 218:Definitions 135:commutative 120:annihilator 58:annihilator 50:prime ideal 1655:Categories 1539:References 751:Properties 640:is called 222:A nonzero 1383:− 1370:− 1246:− 1233:− 1217:⋅ 1010:− 890:onto the 811:⊆ 706:⁡ 599:coprimary 565:⁡ 174:⁡ 82:⁡ 1627:(1970), 1594:(1999), 1557:(1995), 1529:Lam 1999 1517:Lam 1999 1505:Lam 1999 1085:Examples 892:spectrum 804:′ 757:Lam 1999 613:implies 386:-module 297:′ 226:-module 150:radicals 108:assassin 1618:1653294 1585:1322960 771:, then 41:over a 1616:  1606:  1583:  1573:  1062:For a 996:where 940:is an 857:is an 435:where 382:of an 148:, the 36:module 1463:Notes 680:is a 34:of a 30:, an 1604:ISBN 1571:ISBN 1349:and 1030:and 879:Any 210:and 43:ring 1488:doi 1431:If 1416:If 1090:If 936:If 861:of 855:M' 765:M' 763:If 697:Ass 636:of 601:if 556:Ass 504:of 451:of 378:An 318:of 316:N' 165:Ass 125:In 122:). 114:of 110:or 73:Ass 52:of 26:In 1657:: 1614:MR 1612:, 1602:, 1581:MR 1579:, 1569:, 1561:, 1547:, 1484:13 1482:. 1081:. 603:xm 594:. 540:. 375:. 326:, 214:. 1494:. 1490:: 1458:. 1456:Z 1452:Z 1447:. 1445:M 1441:M 1437:M 1433:R 1418:R 1402:. 1399:) 1394:3 1390:x 1386:3 1378:3 1374:w 1365:3 1361:z 1357:( 1337:) 1332:2 1328:w 1324:+ 1319:2 1315:z 1311:+ 1306:2 1302:y 1298:+ 1293:2 1289:x 1285:( 1265:) 1262:) 1257:3 1253:x 1249:3 1241:3 1237:w 1228:3 1224:z 1220:( 1214:) 1209:2 1205:w 1201:+ 1196:2 1192:z 1188:+ 1183:2 1179:y 1175:+ 1170:2 1166:x 1162:( 1159:( 1156:= 1153:I 1133:] 1130:w 1127:, 1124:z 1121:, 1118:y 1115:, 1112:x 1109:[ 1105:C 1101:= 1098:R 1073:. 1071:M 1067:M 1059:. 1057:R 1040:p 1013:) 1007:( 1004:E 983:) 978:p 972:/ 968:R 965:( 962:E 952:R 938:R 924:. 921:) 918:R 915:( 911:c 908:e 905:p 902:S 863:M 841:. 838:) 835:M 832:( 827:R 822:s 819:s 816:A 808:) 801:M 797:( 792:R 787:s 784:s 781:A 769:M 767:⊆ 735:} 732:P 729:{ 726:= 723:) 720:I 716:/ 712:R 709:( 701:R 684:- 682:P 678:I 674:P 660:N 656:/ 652:M 642:P 638:M 634:N 626:M 622:n 618:M 615:x 611:M 607:m 574:) 571:M 568:( 560:R 545:R 538:M 524:P 520:/ 516:R 506:M 502:m 487:) 484:m 481:( 476:R 471:n 468:n 465:A 453:M 449:P 445:R 441:M 437:N 422:) 419:N 416:( 411:R 406:n 403:n 400:A 388:M 384:R 373:R 358:) 355:N 352:( 347:R 342:n 339:n 336:A 324:N 320:N 301:) 294:N 290:( 285:R 280:n 277:n 274:A 269:= 266:) 263:N 260:( 255:R 250:n 247:n 244:A 228:N 224:R 194:. 191:) 188:J 184:/ 180:R 177:( 169:R 142:J 116:M 94:, 91:) 88:M 85:( 77:R 62:M 54:R 46:R 39:M 23:.

Index

Primary decomposition § Primary decomposition from associated primes
abstract algebra
module
ring
prime ideal
annihilator
commutative algebra
Lasker–Noether primary decomposition
commutative
Noetherian rings
primary ideals
radicals
prime ideals
Noetherian ring
primary ideal
Lam 1999
essential submodule
finitely generated module
ascending chain condition
uniform module
injective modules
spectrum
Artinian ring
injective hull
Noetherian module
Primary decomposition#Primary decomposition from associated primes
free abelian groups
abelian groups
Communications in Algebra
doi

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