Knowledge (XXG)

Dimension of a scheme

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equidimensional. In general, if two closed subschemes of some scheme, neither containing the other, have unequal dimensions, then their union is not equidimensional.
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is an affine scheme, then such chains correspond to chains of prime ideals (inclusion reversed) and so the dimension of
468: 2811: 931: 385: 2451: 1059: 1906:{\displaystyle \operatorname {codim} ({\mathfrak {p}}_{1},X)=1,\,\operatorname {codim} ({\mathfrak {p}}_{2},X)=2,} 2685: 2249: 601: 529: 313: 150: 2587:
Dundas, Bjorn Ian; Jahren, Björn; Levine, Marc; Østvær, P.A.; Röndigs, Oliver; Voevodsky, Vladimir (2007),
1591: 1432: 1722: 1687: 1560: 1282: 1943: 1276:. Thus, the dimension of the closure of an open subset can be strictly bigger than that of the open set. 299: 2309: 2003: 1220: 1123: 2254: 2244: 2041: 1939: 704: 137:{\displaystyle \emptyset \neq V_{0}\subsetneq V_{1}\subsetneq \cdots \subsetneq V_{\ell }\subset X.} 2134: 819: 48: 2753: 2037: 1947: 1317: 1182: 2139: 2694: 2659: 2594: 2588: 1977: 2757: 2680: 2106: 2708: 2673: 1039: 2704: 2669: 2655: 710: 184: 2590:
Motivic Homotopy Theory: Lectures at a Summer School in Nordfjordeid, Norway, August 2002
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over a field is viewed as a scheme over the field, then the dimension of the scheme
2615: 1962: 1550:{\displaystyle R\to R/{\mathfrak {m}}_{R},f\mapsto f(0){\bmod {\mathfrak {m}}}_{R}} 663:
be an algebraic pre-variety; i.e., an integral scheme of finite type over a field
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is the dimension of the underlying topological space: the supremum of the lengths
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component (which is then in fact an irreducible component), is equidimensional.
2441:{\displaystyle \eta =\operatorname {Spec} (k(\eta ))\to \operatorname {Spec} R} 2732: 2723: 2130: 2033: 2620: 465:
a field. Then it has dimension 2 (since it contains the hyperplane
1800:{\displaystyle {\mathfrak {m}}_{R}\subsetneq {\mathfrak {p}}_{2}} 2175:. If all the nonempty fibers are purely of the same dimension 921:{\displaystyle X=\mathbb {A} _{R}^{1}=\operatorname {Spec} (R)} 2273:
The Spec of the symmetric algebra of the dual vector space of
1530: 2654:. 3. Folge., vol. 2 (2nd ed.), Berlin, New York: 1950:(implicitly assuming the dimensions are all well-defined). 2761: 1370:
has height-two and height-one maximal ideals; namely,
2454: 2395: 2351: 2312: 2283: 2221: 2201: 2181: 2142: 2109: 2089: 2069: 2049: 2006: 1965:, the union of a line and a point not on the line is 1819: 1756: 1725: 1690: 1594: 1563: 1469: 1435: 1376: 1347: 1320: 1285: 1262: 1223: 1185: 1165: 1126: 1062: 1042: 1022: 972: 934: 867: 822: 802: 782: 762: 742: 713: 689: 669: 649: 604: 578: 532: 471: 388: 316: 223: 153: 76: 1422:{\displaystyle {\mathfrak {p}}_{1}=(\omega _{R}t-1)} 1009:{\displaystyle \operatorname {Spec} (R)=\{s,\eta \}} 350:
is precisely the height of the prime ideal defining
2515: 2440: 2382:{\displaystyle \pi :X\to \operatorname {Spec} (R)} 2381: 2337: 2289: 2227: 2207: 2187: 2167: 2121: 2095: 2075: 2055: 2024: 1905: 1799: 1742: 1707: 1672: 1580: 1549: 1455: 1421: 1362: 1333: 1302: 1268: 1248: 1209: 1171: 1151: 1112: 1048: 1036:corresponding to the maximal ideal and closed and 1028: 1008: 958: 920: 846: 808: 788: 768: 748: 728: 695: 675: 655: 628: 590: 556: 510: 453: 334: 283: 171: 136: 511:{\displaystyle H=\{x=0\}\subset \mathbb {A} ^{3}} 2652:Ergebnisse der Mathematik und ihrer Grenzgebiete 1120:are closed and open, respectively. We note that 959:{\displaystyle \pi :X\to \operatorname {Spec} R} 454:{\displaystyle X=\operatorname {Spec} k/(xy,xz)} 2516:{\displaystyle R\otimes _{R}k(\eta )=k(\eta )} 2781: 2733:"29.29 Morphisms of given relative dimension" 1958:All irreducible schemes are equidimensional. 1113:{\displaystyle \pi ^{-1}(s),\pi ^{-1}(\eta )} 375:is the same as the vector-space dimension of 8: 1003: 991: 490: 478: 198:is an irreducible closed subset of a scheme 2693:, vol. 52, New York: Springer-Verlag, 629:{\displaystyle \operatorname {codim} (x,X)} 557:{\displaystyle \operatorname {codim} (x,X)} 2788: 2774: 2724:"28 Properties of Schemes/28.10 Dimension" 2574: 2562: 2550: 2538: 2471: 2453: 2394: 2350: 2317: 2311: 2282: 2220: 2200: 2180: 2147: 2141: 2108: 2088: 2068: 2048: 2005: 1879: 1873: 1872: 1861: 1837: 1831: 1830: 1818: 1791: 1785: 1784: 1765: 1759: 1758: 1755: 1734: 1728: 1727: 1724: 1699: 1693: 1692: 1689: 1655: 1650: 1619: 1607: 1593: 1572: 1566: 1565: 1562: 1541: 1534: 1533: 1529: 1501: 1495: 1494: 1488: 1468: 1444: 1438: 1437: 1434: 1401: 1385: 1379: 1378: 1375: 1346: 1325: 1319: 1294: 1288: 1287: 1284: 1261: 1228: 1222: 1184: 1164: 1131: 1125: 1092: 1067: 1061: 1056:the zero ideal and open. Then the fibers 1041: 1021: 971: 933: 885: 880: 876: 875: 866: 821: 801: 781: 761: 741: 712: 688: 668: 648: 603: 577: 531: 502: 498: 497: 470: 425: 387: 315: 266: 247: 234: 222: 214:of chains of irreducible closed subsets: 152: 119: 100: 87: 75: 67:of chains of irreducible closed subsets: 59:By definition, the dimension of a scheme 335:{\displaystyle X=\operatorname {Spec} A} 306:if and only if the codimension of it in 172:{\displaystyle X=\operatorname {Spec} A} 2531: 2266: 1673:{\displaystyle R/(\omega _{R}t-1)=R=} 367:If a finite-dimensional vector space 7: 2742: 2740: 1456:{\displaystyle {\mathfrak {p}}_{2}=} 2553:, Ch. II, just after Example 3.2.6. 1874: 1832: 1786: 1760: 1743:{\displaystyle {\mathfrak {p}}_{2}} 1729: 1708:{\displaystyle {\mathfrak {p}}_{1}} 1694: 1581:{\displaystyle {\mathfrak {p}}_{1}} 1567: 1535: 1496: 1439: 1380: 1303:{\displaystyle {\mathfrak {m}}_{R}} 1289: 342:is affine, then the codimension of 2760:. You can help Knowledge (XXG) by 2541:, Ch. I, just after Corollary 1.6. 77: 25: 1279:Continuing the same example, let 861:be a discrete valuation ring and 518:as an irreducible component). If 33:dimension of an algebraic variety 2744: 2614:Adeel, Ahmed Kahn (March 2013). 2338:{\displaystyle \pi ^{-1}(\eta )} 2025:{\displaystyle f:X\rightarrow Y} 1249:{\displaystyle \pi ^{-1}(\eta )} 1152:{\displaystyle \pi ^{-1}(\eta )} 2616:"Relative Dimension in Ncatlab" 1717:Krull's principal ideal theorem 210:is the supremum of the lengths 2510: 2504: 2501: 2495: 2486: 2480: 2464: 2458: 2426: 2423: 2420: 2414: 2408: 2376: 2370: 2361: 2332: 2326: 2162: 2156: 2016: 1891: 1868: 1849: 1826: 1777: 1771: 1664: 1643: 1634: 1612: 1604: 1598: 1525: 1519: 1513: 1482: 1479: 1473: 1416: 1394: 1357: 1351: 1243: 1237: 1146: 1140: 1107: 1101: 1082: 1076: 985: 979: 944: 915: 912: 906: 900: 723: 717: 623: 611: 551: 539: 448: 430: 422: 404: 1: 2691:Graduate Texts in Mathematics 928:the affine line over it. Let 847:{\displaystyle \dim U=\dim X} 796:is a nonempty open subset of 2731:The Stacks Project authors. 2722:The Stacks Project authors. 2577:, Ch. II, Exercise 3.20. (e) 2565:, Ch. II, Exercise 3.20. (b) 2083:. The relative dimension of 2277:is the scheme structure on 1334:{\displaystyle \omega _{R}} 27:In algebraic geometry, the 2828: 2739: 1680:the field of fractions of 1341:a generator. We note that 1210:{\displaystyle 2=1+\dim R} 202:, then the codimension of 2593:, Springer, p. 101, 2448:and so it is the Spec of 2250:Glossary of scheme theory 2215:is of relative dimension 2168:{\displaystyle f^{-1}(y)} 1159:has dimension one, while 294:An irreducible subset of 31:is a generalization of a 2807:Algebraic geometry stubs 2646:William Fulton. (1998), 2345:is the fiber product of 2306:In fact, by definition, 1310:be the maximal ideal of 683:. Then the dimension of 1936:pure dimensional scheme 2756:–related article is a 2517: 2442: 2383: 2339: 2291: 2229: 2209: 2189: 2169: 2123: 2122:{\displaystyle y\in Y} 2097: 2077: 2057: 2026: 1944:irreducible components 1932:equidimensional scheme 1926:Equidimensional scheme 1907: 1801: 1744: 1709: 1674: 1582: 1551: 1457: 1423: 1364: 1335: 1304: 1270: 1250: 1211: 1173: 1153: 1114: 1050: 1030: 1016:consists of 2 points, 1010: 960: 922: 848: 810: 790: 770: 750: 730: 707:of the function field 697: 677: 657: 630: 592: 558: 512: 455: 336: 285: 173: 138: 43:and, accordingly, the 41:relative point of view 18:Equidimensional scheme 2518: 2443: 2384: 2340: 2292: 2230: 2210: 2195:, then one says that 2190: 2170: 2124: 2098: 2078: 2058: 2027: 1908: 1802: 1750:has height two since 1745: 1710: 1675: 1583: 1552: 1458: 1424: 1365: 1336: 1305: 1271: 1251: 1212: 1174: 1154: 1115: 1051: 1049:{\displaystyle \eta } 1031: 1011: 961: 923: 849: 811: 791: 771: 751: 731: 698: 678: 658: 631: 593: 572:and is 1 if it is in 559: 522:is a closed point of 513: 456: 337: 300:irreducible component 286: 174: 139: 29:dimension of a scheme 2452: 2393: 2349: 2310: 2281: 2255:Equidimensional ring 2219: 2199: 2179: 2140: 2107: 2087: 2067: 2047: 2004: 1984:for some field  1817: 1754: 1723: 1688: 1592: 1561: 1467: 1433: 1374: 1345: 1318: 1283: 1260: 1221: 1183: 1163: 1124: 1060: 1040: 1020: 970: 932: 865: 820: 800: 780: 760: 740: 729:{\displaystyle k(X)} 711: 705:transcendence degree 687: 667: 647: 602: 576: 530: 469: 386: 314: 221: 151: 74: 2648:Intersection theory 1663: 966:be the projection. 890: 591:{\displaystyle X-H} 51:is also important. 49:morphism of schemes 2812:Algebraic geometry 2754:algebraic geometry 2686:Algebraic Geometry 2513: 2438: 2379: 2335: 2287: 2225: 2205: 2185: 2165: 2119: 2093: 2073: 2053: 2022: 1996:Relative dimension 1903: 1797: 1740: 1715:has height one by 1705: 1670: 1646: 1578: 1557:. The first ideal 1547: 1453: 1419: 1360: 1331: 1300: 1266: 1246: 1207: 1169: 1149: 1110: 1046: 1026: 1006: 956: 918: 874: 844: 806: 786: 766: 746: 726: 693: 673: 653: 636:for closed points 626: 588: 554: 508: 451: 332: 281: 169: 147:In particular, if 134: 45:relative dimension 2769: 2768: 2700:978-0-387-90244-9 2681:Hartshorne, Robin 2665:978-3-540-62046-4 2290:{\displaystyle V} 2245:Kleiman's theorem 2228:{\displaystyle n} 2208:{\displaystyle f} 2188:{\displaystyle n} 2096:{\displaystyle f} 2076:{\displaystyle Y} 2056:{\displaystyle X} 1980:) over Spec  1588:is maximal since 1363:{\displaystyle R} 1269:{\displaystyle X} 1172:{\displaystyle X} 1029:{\displaystyle s} 809:{\displaystyle X} 789:{\displaystyle U} 769:{\displaystyle k} 749:{\displaystyle X} 696:{\displaystyle X} 676:{\displaystyle k} 656:{\displaystyle X} 183:is precisely the 16:(Redirected from 2819: 2790: 2783: 2776: 2748: 2741: 2736: 2727: 2711: 2676: 2633: 2632: 2630: 2628: 2611: 2605: 2603: 2584: 2578: 2572: 2566: 2560: 2554: 2548: 2542: 2536: 2524: 2522: 2520: 2519: 2514: 2476: 2475: 2447: 2445: 2444: 2439: 2388: 2386: 2385: 2380: 2344: 2342: 2341: 2336: 2325: 2324: 2304: 2298: 2296: 2294: 2293: 2288: 2271: 2234: 2232: 2231: 2226: 2214: 2212: 2211: 2206: 2194: 2192: 2191: 2186: 2174: 2172: 2171: 2166: 2155: 2154: 2128: 2126: 2125: 2120: 2102: 2100: 2099: 2094: 2082: 2080: 2079: 2074: 2062: 2060: 2059: 2054: 2031: 2029: 2028: 2023: 1946:are of the same 1912: 1910: 1909: 1904: 1884: 1883: 1878: 1877: 1842: 1841: 1836: 1835: 1806: 1804: 1803: 1798: 1796: 1795: 1790: 1789: 1770: 1769: 1764: 1763: 1749: 1747: 1746: 1741: 1739: 1738: 1733: 1732: 1714: 1712: 1711: 1706: 1704: 1703: 1698: 1697: 1679: 1677: 1676: 1671: 1662: 1654: 1624: 1623: 1611: 1587: 1585: 1584: 1579: 1577: 1576: 1571: 1570: 1556: 1554: 1553: 1548: 1546: 1545: 1540: 1539: 1538: 1506: 1505: 1500: 1499: 1492: 1462: 1460: 1459: 1454: 1449: 1448: 1443: 1442: 1428: 1426: 1425: 1420: 1406: 1405: 1390: 1389: 1384: 1383: 1369: 1367: 1366: 1361: 1340: 1338: 1337: 1332: 1330: 1329: 1309: 1307: 1306: 1301: 1299: 1298: 1293: 1292: 1275: 1273: 1272: 1267: 1255: 1253: 1252: 1247: 1236: 1235: 1216: 1214: 1213: 1208: 1178: 1176: 1175: 1170: 1158: 1156: 1155: 1150: 1139: 1138: 1119: 1117: 1116: 1111: 1100: 1099: 1075: 1074: 1055: 1053: 1052: 1047: 1035: 1033: 1032: 1027: 1015: 1013: 1012: 1007: 965: 963: 962: 957: 927: 925: 924: 919: 889: 884: 879: 853: 851: 850: 845: 815: 813: 812: 807: 795: 793: 792: 787: 775: 773: 772: 767: 755: 753: 752: 747: 735: 733: 732: 727: 702: 700: 699: 694: 682: 680: 679: 674: 662: 660: 659: 654: 635: 633: 632: 627: 597: 595: 594: 589: 563: 561: 560: 555: 517: 515: 514: 509: 507: 506: 501: 460: 458: 457: 452: 429: 341: 339: 338: 333: 290: 288: 287: 282: 271: 270: 252: 251: 239: 238: 178: 176: 175: 170: 143: 141: 140: 135: 124: 123: 105: 104: 92: 91: 21: 2827: 2826: 2822: 2821: 2820: 2818: 2817: 2816: 2797: 2796: 2795: 2794: 2730: 2721: 2718: 2701: 2679: 2666: 2656:Springer-Verlag 2645: 2642: 2637: 2636: 2626: 2624: 2613: 2612: 2608: 2601: 2586: 2585: 2581: 2575:Hartshorne 1977 2573: 2569: 2563:Hartshorne 1977 2561: 2557: 2551:Hartshorne 1977 2549: 2545: 2539:Hartshorne 1977 2537: 2533: 2528: 2527: 2467: 2450: 2449: 2391: 2390: 2347: 2346: 2313: 2308: 2307: 2305: 2301: 2279: 2278: 2272: 2268: 2263: 2241: 2217: 2216: 2197: 2196: 2177: 2176: 2143: 2138: 2137: 2105: 2104: 2085: 2084: 2065: 2064: 2045: 2044: 2002: 2001: 1998: 1976:(for instance, 1972:If a scheme is 1956: 1928: 1921:is irreducible. 1871: 1829: 1815: 1814: 1807:. Consequently, 1783: 1757: 1752: 1751: 1726: 1721: 1720: 1691: 1686: 1685: 1615: 1590: 1589: 1564: 1559: 1558: 1528: 1493: 1465: 1464: 1436: 1431: 1430: 1397: 1377: 1372: 1371: 1343: 1342: 1321: 1316: 1315: 1286: 1281: 1280: 1258: 1257: 1224: 1219: 1218: 1181: 1180: 1161: 1160: 1127: 1122: 1121: 1088: 1063: 1058: 1057: 1038: 1037: 1018: 1017: 968: 967: 930: 929: 863: 862: 818: 817: 798: 797: 778: 777: 758: 757: 738: 737: 709: 708: 685: 684: 665: 664: 645: 644: 600: 599: 574: 573: 528: 527: 496: 467: 466: 384: 383: 364: 312: 311: 262: 243: 230: 219: 218: 185:Krull dimension 149: 148: 115: 96: 83: 72: 71: 57: 39:emphasizes the 23: 22: 15: 12: 11: 5: 2825: 2823: 2815: 2814: 2809: 2799: 2798: 2793: 2792: 2785: 2778: 2770: 2767: 2766: 2749: 2738: 2737: 2728: 2717: 2716:External links 2714: 2713: 2712: 2699: 2677: 2664: 2641: 2638: 2635: 2634: 2606: 2599: 2579: 2567: 2555: 2543: 2530: 2529: 2526: 2525: 2512: 2509: 2506: 2503: 2500: 2497: 2494: 2491: 2488: 2485: 2482: 2479: 2474: 2470: 2466: 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1393: 1388: 1382: 1359: 1356: 1353: 1350: 1328: 1324: 1297: 1291: 1277: 1265: 1245: 1242: 1239: 1234: 1231: 1227: 1206: 1203: 1200: 1197: 1194: 1191: 1188: 1179:has dimension 1168: 1148: 1145: 1142: 1137: 1134: 1130: 1109: 1106: 1103: 1098: 1095: 1091: 1087: 1084: 1081: 1078: 1073: 1070: 1066: 1045: 1025: 1005: 1002: 999: 996: 993: 990: 987: 984: 981: 978: 975: 955: 952: 949: 946: 943: 940: 937: 917: 914: 911: 908: 905: 902: 899: 896: 893: 888: 883: 878: 873: 870: 855: 843: 840: 837: 834: 831: 828: 825: 805: 785: 765: 745: 725: 722: 719: 716: 692: 672: 652: 641: 625: 622: 619: 616: 613: 610: 607: 587: 584: 581: 553: 550: 547: 544: 541: 538: 535: 505: 500: 495: 492: 489: 486: 483: 480: 477: 474: 450: 447: 444: 441: 438: 435: 432: 428: 424: 421: 418: 415: 412: 409: 406: 403: 400: 397: 394: 391: 380: 363: 360: 331: 328: 325: 322: 319: 292: 291: 280: 277: 274: 269: 265: 261: 258: 255: 250: 246: 242: 237: 233: 229: 226: 168: 165: 162: 159: 156: 145: 144: 133: 130: 127: 122: 118: 114: 111: 108: 103: 99: 95: 90: 86: 82: 79: 56: 53: 24: 14: 13: 10: 9: 6: 4: 3: 2: 2824: 2813: 2810: 2808: 2805: 2804: 2802: 2791: 2786: 2784: 2779: 2777: 2772: 2771: 2765: 2763: 2759: 2755: 2750: 2747: 2743: 2734: 2729: 2725: 2720: 2719: 2715: 2710: 2706: 2702: 2696: 2692: 2688: 2687: 2682: 2678: 2675: 2671: 2667: 2661: 2657: 2653: 2649: 2644: 2643: 2639: 2623: 2622: 2617: 2610: 2607: 2602: 2600:9783540458975 2596: 2592: 2591: 2583: 2580: 2576: 2571: 2568: 2564: 2559: 2556: 2552: 2547: 2544: 2540: 2535: 2532: 2507: 2498: 2492: 2489: 2483: 2477: 2472: 2468: 2461: 2455: 2435: 2432: 2429: 2417: 2411: 2405: 2402: 2399: 2396: 2373: 2367: 2364: 2358: 2355: 2352: 2329: 2321: 2318: 2314: 2303: 2300: 2284: 2276: 2270: 2267: 2260: 2256: 2253: 2251: 2248: 2246: 2243: 2242: 2238: 2236: 2222: 2202: 2182: 2159: 2151: 2148: 2144: 2136: 2132: 2116: 2113: 2110: 2090: 2070: 2050: 2043: 2039: 2035: 2019: 2013: 2010: 2007: 1995: 1993: 1991: 1988:, then every 1987: 1983: 1979: 1975: 1970: 1968: 1964: 1959: 1953: 1951: 1949: 1945: 1942:all of whose 1941: 1937: 1933: 1925: 1920: 1916: 1900: 1897: 1894: 1888: 1885: 1880: 1865: 1862: 1858: 1855: 1852: 1846: 1843: 1838: 1823: 1820: 1813: 1812: 1811: 1810: 1792: 1780: 1774: 1766: 1735: 1718: 1700: 1683: 1667: 1659: 1656: 1651: 1647: 1640: 1637: 1631: 1628: 1625: 1620: 1616: 1608: 1601: 1595: 1573: 1542: 1522: 1516: 1510: 1507: 1502: 1489: 1485: 1476: 1470: 1450: 1445: 1413: 1410: 1407: 1402: 1398: 1391: 1386: 1354: 1348: 1326: 1322: 1313: 1295: 1278: 1263: 1240: 1232: 1229: 1225: 1204: 1201: 1198: 1195: 1192: 1189: 1186: 1166: 1143: 1135: 1132: 1128: 1104: 1096: 1093: 1089: 1085: 1079: 1071: 1068: 1064: 1043: 1023: 1000: 997: 994: 988: 982: 976: 973: 953: 950: 947: 941: 938: 935: 909: 903: 897: 894: 891: 886: 881: 871: 868: 860: 856: 841: 838: 835: 832: 829: 826: 823: 803: 783: 763: 743: 720: 714: 706: 690: 670: 650: 642: 639: 620: 617: 614: 608: 605: 585: 582: 579: 571: 567: 548: 545: 542: 536: 533: 525: 521: 503: 493: 487: 484: 481: 475: 472: 464: 445: 442: 439: 436: 433: 426: 419: 416: 413: 410: 407: 401: 398: 395: 392: 389: 381: 378: 374: 370: 366: 365: 361: 359: 357: 353: 349: 345: 329: 326: 323: 320: 317: 309: 305: 301: 297: 278: 275: 272: 267: 263: 259: 256: 253: 248: 244: 240: 235: 231: 227: 224: 217: 216: 215: 213: 209: 205: 201: 197: 192: 190: 186: 182: 166: 163: 160: 157: 154: 131: 128: 125: 120: 116: 112: 109: 106: 101: 97: 93: 88: 84: 80: 70: 69: 68: 66: 62: 54: 52: 50: 46: 42: 38: 37:Scheme theory 34: 30: 19: 2762:expanding it 2751: 2684: 2647: 2625:. Retrieved 2619: 2609: 2589: 2582: 2570: 2558: 2546: 2534: 2302: 2274: 2269: 2040:between two 1999: 1989: 1985: 1981: 1971: 1966: 1963:affine space 1960: 1957: 1935: 1931: 1929: 1918: 1681: 1311: 1256:is dense in 858: 637: 569: 565: 523: 519: 462: 376: 372: 368: 355: 351: 347: 343: 310:is zero. If 307: 303: 295: 293: 211: 207: 203: 199: 195: 193: 188: 180: 146: 64: 60: 58: 44: 28: 26: 2103:at a point 2038:finite type 2036:locally of 776:. Also, if 2801:Categories 2640:References 55:Definition 2499:η 2484:η 2469:⊗ 2433:⁡ 2427:→ 2418:η 2406:⁡ 2397:η 2368:⁡ 2362:→ 2353:π 2330:η 2319:− 2315:π 2149:− 2131:dimension 2114:∈ 2017:→ 1990:connected 1948:dimension 1866:⁡ 1824:⁡ 1781:⊊ 1657:− 1648:ω 1629:− 1617:ω 1514:↦ 1483:→ 1411:− 1399:ω 1323:ω 1241:η 1230:− 1226:π 1202:⁡ 1144:η 1133:− 1129:π 1105:η 1094:− 1090:π 1069:− 1065:π 1044:η 1001:η 977:⁡ 951:⁡ 945:→ 936:π 898:⁡ 839:⁡ 827:⁡ 640:can vary. 609:⁡ 583:− 537:⁡ 494:⊂ 399:⁡ 327:⁡ 273:⊂ 268:ℓ 260:⊊ 257:⋯ 254:⊊ 241:⊊ 164:⁡ 126:⊂ 121:ℓ 113:⊊ 110:⋯ 107:⊊ 94:⊊ 81:≠ 78:∅ 2683:(1977), 2239:See also 2034:morphism 1954:Examples 1684:. Also, 598:. Thus, 568:lies in 564:is 2 if 362:Examples 2709:0463157 2674:1644323 2621:Ncatlab 2133:of the 2129:is the 2042:schemes 1938:) is a 816:, then 703:is the 526:, then 2707:  2697:  2672:  2662:  2627:8 June 2597:  1974:smooth 1940:scheme 1917:while 298:is an 2752:This 2261:Notes 2135:fiber 2032:be a 1978:étale 1934:(or, 1863:codim 1821:codim 756:over 606:codim 534:codim 47:of a 2758:stub 2695:ISBN 2660:ISBN 2629:2022 2595:ISBN 2430:Spec 2403:Spec 2389:and 2365:Spec 2063:and 2000:Let 1719:and 1429:and 1314:and 1217:and 974:Spec 948:Spec 895:Spec 857:Let 643:Let 396:Spec 382:Let 324:Spec 161:Spec 1967:not 1961:In 1930:An 1531:mod 1199:dim 836:dim 824:dim 736:of 354:in 346:in 302:of 206:in 194:If 187:of 2803:: 2705:MR 2703:, 2689:, 2670:MR 2668:, 2658:, 2650:, 2618:. 2235:. 461:, 358:. 191:. 35:. 2789:e 2782:t 2775:v 2764:. 2735:. 2726:. 2631:. 2604:. 2523:. 2511:] 2508:t 2505:[ 2502:) 2496:( 2493:k 2490:= 2487:) 2481:( 2478:k 2473:R 2465:] 2462:t 2459:[ 2456:R 2436:R 2424:) 2421:) 2415:( 2412:k 2409:( 2400:= 2377:) 2374:R 2371:( 2359:X 2356:: 2333:) 2327:( 2322:1 2297:. 2285:V 2275:V 2223:n 2203:f 2183:n 2163:) 2160:y 2157:( 2152:1 2145:f 2117:Y 2111:y 2091:f 2071:Y 2051:X 2020:Y 2014:X 2011:: 2008:f 1986:k 1982:k 1919:X 1901:, 1898:2 1895:= 1892:) 1889:X 1886:, 1881:2 1875:p 1869:( 1859:, 1856:1 1853:= 1850:) 1847:X 1844:, 1839:1 1833:p 1827:( 1793:2 1787:p 1778:] 1775:t 1772:[ 1767:R 1761:m 1736:2 1730:p 1701:1 1695:p 1682:R 1668:= 1665:] 1660:1 1652:R 1644:[ 1641:R 1638:= 1635:) 1632:1 1626:t 1621:R 1613:( 1609:/ 1605:] 1602:t 1599:[ 1596:R 1574:1 1568:p 1543:R 1536:m 1526:) 1523:0 1520:( 1517:f 1511:f 1508:, 1503:R 1497:m 1490:/ 1486:R 1480:] 1477:t 1474:[ 1471:R 1451:= 1446:2 1440:p 1417:) 1414:1 1408:t 1403:R 1395:( 1392:= 1387:1 1381:p 1358:] 1355:t 1352:[ 1349:R 1327:R 1312:R 1296:R 1290:m 1264:X 1244:) 1238:( 1233:1 1205:R 1196:+ 1193:1 1190:= 1187:2 1167:X 1147:) 1141:( 1136:1 1108:) 1102:( 1097:1 1086:, 1083:) 1080:s 1077:( 1072:1 1024:s 1004:} 998:, 995:s 992:{ 989:= 986:) 983:R 980:( 954:R 942:X 939:: 916:) 913:] 910:t 907:[ 904:R 901:( 892:= 887:1 882:R 877:A 872:= 869:X 859:R 854:. 842:X 833:= 830:U 804:X 784:U 764:k 744:X 724:) 721:X 718:( 715:k 691:X 671:k 651:X 638:x 624:) 621:X 618:, 615:x 612:( 586:H 580:X 570:H 566:x 552:) 549:X 546:, 543:x 540:( 524:X 520:x 504:3 499:A 491:} 488:0 485:= 482:x 479:{ 476:= 473:H 463:k 449:) 446:z 443:x 440:, 437:y 434:x 431:( 427:/ 423:] 420:z 417:, 414:y 411:, 408:x 405:[ 402:k 393:= 390:X 379:. 377:V 373:V 369:V 356:X 352:Y 348:X 344:Y 330:A 321:= 318:X 308:X 304:X 296:X 279:. 276:X 264:V 249:1 245:V 236:0 232:V 228:= 225:Y 212:ℓ 208:X 204:Y 200:X 196:Y 189:A 181:X 167:A 158:= 155:X 132:. 129:X 117:V 102:1 98:V 89:0 85:V 65:ℓ 61:X 20:)

Index

Equidimensional scheme
dimension of an algebraic variety
Scheme theory
relative point of view
morphism of schemes
Krull dimension
irreducible component
transcendence degree
Krull's principal ideal theorem
scheme
irreducible components
dimension
affine space
smooth
étale
morphism
finite type
schemes
dimension
fiber
Kleiman's theorem
Glossary of scheme theory
Equidimensional ring
Hartshorne 1977
Hartshorne 1977
Hartshorne 1977
Hartshorne 1977
Motivic Homotopy Theory: Lectures at a Summer School in Nordfjordeid, Norway, August 2002
ISBN
9783540458975

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