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Complemented lattice

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are a special case of orthocomplemented lattices, which in turn are a special case of complemented lattices (with extra structure). The ortholattices are most often used in
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A natural further weakening of this condition for orthocomplemented lattices, necessary for applications in quantum logic, is to require it only in the special case
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in Boolean lattices. This remark has spurred interest in the closed subspaces of a Hilbert space, which form an orthomodular lattice.
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every element will have at most one complement. A lattice in which every element has exactly one complement is called a
1397: 349: 2117: 1976: 919: 443: 382: 140:, complements are unique. Every complemented distributive lattice has a unique orthocomplementation and is in fact a 592: 1971: 1607: 934:
Grätzer (1971), Lemma I.6.2, p. 48. This result holds more generally for modular lattices, see Exercise 4, p. 50.
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A distributive lattice is complemented if and only if it is bounded and relatively complemented. The lattice of
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in quantum logic is "formally indistinguishable from the calculus of linear subspaces with respect to
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operation, provides an example of an orthocomplemented lattice that is not, in general, distributive.
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A lattice with the property that every interval (viewed as a sublattice) is complemented is called a
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is therefore defined as an orthocomplemented lattice such that for any two elements the implication
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and maps each element to a complement. An orthocomplemented lattice satisfying a weak form of the
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The hexagon lattice admits a unique orthocomplementation, but it is not uniquely complemented.
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is a bounded lattice equipped with an orthocomplementation. The lattice of subspaces of an
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provide an example of a complemented lattice that is not, in general, distributive.
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The Unapologetic Mathematician: Orthogonal Complements and the Lattice of Subspaces
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In general an element may have more than one complement. However, in a (bounded)
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there are various competing definitions of "Orthocomplementation" in literature.
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represent quantum propositions and behave as an orthocomplemented lattice.
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Grätzer (1971), Lemma I.6.1, p. 47. Rutherford (1965), Theorem 9.3 p. 25.
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Lattices of this form are of crucial importance for the study of
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Orthocomplemented lattices, like Boolean algebras, satisfy
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and orthogonal complements" corresponding to the roles of
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on a bounded lattice is a function that maps each element
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Lattice Theory: First Concepts and Distributive Lattices
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in such a way that the following axioms are satisfied:
189:= 1     and     567:, the node on the right-hand side has two complements. 970: 242:    and     147: 824:, since they are part of the axiomisation of the 2176: 977:Ranganathan Padmanabhan; Sergiu Rudeanu (2008). 99: = 0. Complements need not be unique. 1494: 1398: 911:Semimodular Lattices: Theory and Applications 2152:Positive cone of a partially ordered group 1501: 1487: 1405: 1391: 1057: 444:Learn how and when to remove this message 383:Learn how and when to remove this message 2135:Positive cone of an ordered vector space 1007: 980:Axioms for lattices and boolean algebras 692: 15: 1038: 1016: 943:Birkhoff (1961), Corollary IX.1, p. 134 282: 2177: 1482: 952: 907: 394: 321:adding citations to reliable sources 292: 221:in an interval there is an element 767:is modular, but not distributive. 23:of a complemented lattice. A point 13: 1662:Properties & Types ( 1043:. Basel, Switzerland: Birkhäuser. 14: 2196: 2118:Positive cone of an ordered field 1067: 1058:Rutherford, Daniel Edwin (1965). 983:. World Scientific. p. 128. 1972:Ordered topological vector space 1508: 1012:. American Mathematical Society. 610: 591: 572: 553: 399: 297: 117:on a complemented lattice is an 1452:"Uniquely complemented lattice" 760:; e.g. the above-shown lattice 605:admits 3 orthocomplementations. 586:admits no orthocomplementation. 308:needs additional citations for 215:relatively complemented lattice 148:Definition and basic properties 104:relatively complemented lattice 35:are complements if and only if 1060:Introduction to Lattice Theory 958: 946: 937: 928: 901: 892: 1: 1929:Series-parallel partial order 1024:. W. H. Freeman and Company. 1001: 209:uniquely complemented lattice 106:is a lattice such that every 1608:Cantor's isomorphism theorem 7: 1648:Szpilrajn extension theorem 1623:Hausdorff maximal principle 1598:Boolean prime ideal theorem 1466:"Orthocomplemented lattice" 873: 756:holds. This is weaker than 419:. The specific problem is: 268:relative to the interval. 164:1), in which every element 156:is a bounded lattice (with 71:1), in which every element 10: 2201: 1994:Topological vector lattice 1008:Birkhoff, Garrett (1961). 880:Pseudocomplemented lattice 549:Some complemented lattices 286: 264:is called a complement of 2024: 1952: 1891: 1661: 1590: 1539: 1516: 531:orthocomplemented lattice 1603:Cantor–Bernstein theorem 1039:Grätzer, George (1978). 885: 560:In the pentagon lattice 464:to an "orthocomplement" 2147:Partially ordered group 1967:Specialization preorder 908:Stern, Manfred (1999), 1633:Kruskal's tree theorem 1628:Knaster–Tarski theorem 1618:Dushnik–Miller theorem 1424:"Complemented lattice" 1041:General Lattice Theory 332:"Complemented lattice" 44: 1438:"Relative complement" 693:Orthomodular lattices 543:orthogonal complement 138:distributive lattices 19: 2125:Ordered vector space 1302:Group with operators 1245:Complemented lattice 1080:Algebraic structures 780:orthomodular lattice 701:if for all elements 697:A lattice is called 579:The diamond lattice 458:orthocomplementation 426:improve this article 415:to meet Knowledge's 317:improve this article 283:Orthocomplementation 205:distributive lattice 154:complemented lattice 131:orthomodular lattice 115:orthocomplementation 57:complemented lattice 1963:Alexandrov topology 1909:Lexicographic order 1868:Well-quasi-ordering 1356:Composition algebra 1116:Quasigroup and loop 539:inner product space 91: = 1 and 1944:Transitive closure 1904:Converse/Transpose 1613:Dilworth's theorem 1062:. Oliver and Boyd. 843:observed that the 172:, i.e. an element 79:, i.e. an element 45: 2172: 2171: 2130:Partially ordered 1939:Symmetric closure 1924:Reflexive closure 1667: 1419: 1418: 1415: 1414: 1050:978-0-12-295750-5 1031:978-0-7167-0442-3 990:978-981-283-454-6 833:quantum mechanics 454: 453: 446: 417:quality standards 408:This article may 393: 392: 385: 367: 289:De Morgan algebra 2192: 1914:Linear extension 1663: 1643:Mirsky's theorem 1503: 1496: 1489: 1480: 1479: 1475: 1461: 1447: 1433: 1407: 1400: 1393: 1182:Commutative ring 1111:Rack and quandle 1076: 1075: 1072: 1071: 1063: 1054: 1035: 1013: 995: 994: 974: 968: 962: 956: 950: 944: 941: 935: 932: 926: 924: 905: 899: 896: 841:John von Neumann 837:Garrett Birkhoff 713:the implication 648:de Morgan's laws 623:Boolean algebras 614: 595: 576: 557: 449: 442: 438: 435: 429: 403: 402: 395: 388: 381: 377: 374: 368: 366: 325: 301: 293: 260:Such an element 162:greatest element 69:greatest element 42: 39:does not lie on 38: 30: 26: 2200: 2199: 2195: 2194: 2193: 2191: 2190: 2189: 2175: 2174: 2173: 2168: 2164:Young's lattice 2020: 1948: 1887: 1737:Heyting algebra 1685:Boolean algebra 1657: 1638:Laver's theorem 1586: 1552:Boolean algebra 1547:Binary relation 1535: 1512: 1507: 1464: 1450: 1436: 1422: 1411: 1382: 1381: 1380: 1351:Non-associative 1333: 1322: 1321: 1311: 1291: 1280: 1279: 1268:Map of lattices 1264: 1260:Boolean algebra 1255:Heyting algebra 1229: 1218: 1217: 1211: 1192:Integral domain 1156: 1145: 1144: 1138: 1092: 1070: 1051: 1032: 1018:Grätzer, George 1004: 999: 998: 991: 975: 971: 963: 959: 951: 947: 942: 938: 933: 929: 922: 906: 902: 897: 893: 888: 876: 766: 695: 618: 615: 606: 604: 596: 587: 585: 577: 568: 566: 558: 506:Order-reversing 450: 439: 433: 430: 423: 404: 400: 389: 378: 372: 369: 326: 324: 314: 302: 291: 285: 150: 142:Boolean algebra 123:order-reversing 40: 36: 28: 24: 12: 11: 5: 2198: 2188: 2187: 2185:Lattice theory 2170: 2169: 2167: 2166: 2161: 2156: 2155: 2154: 2144: 2143: 2142: 2137: 2132: 2122: 2121: 2120: 2110: 2105: 2104: 2103: 2098: 2091:Order morphism 2088: 2087: 2086: 2076: 2071: 2066: 2061: 2056: 2055: 2054: 2044: 2039: 2034: 2028: 2026: 2022: 2021: 2019: 2018: 2017: 2016: 2011: 2009:Locally convex 2006: 2001: 1991: 1989:Order topology 1986: 1985: 1984: 1982:Order topology 1979: 1969: 1959: 1957: 1950: 1949: 1947: 1946: 1941: 1936: 1931: 1926: 1921: 1916: 1911: 1906: 1901: 1895: 1893: 1889: 1888: 1886: 1885: 1875: 1865: 1860: 1855: 1850: 1845: 1840: 1835: 1830: 1829: 1828: 1818: 1813: 1812: 1811: 1806: 1801: 1796: 1794:Chain-complete 1786: 1781: 1780: 1779: 1774: 1769: 1764: 1759: 1749: 1744: 1739: 1734: 1729: 1719: 1714: 1709: 1704: 1699: 1694: 1693: 1692: 1682: 1677: 1671: 1669: 1659: 1658: 1656: 1655: 1650: 1645: 1640: 1635: 1630: 1625: 1620: 1615: 1610: 1605: 1600: 1594: 1592: 1588: 1587: 1585: 1584: 1579: 1574: 1569: 1564: 1559: 1554: 1549: 1543: 1541: 1537: 1536: 1534: 1533: 1528: 1523: 1517: 1514: 1513: 1506: 1505: 1498: 1491: 1483: 1477: 1476: 1462: 1448: 1434: 1417: 1416: 1413: 1412: 1410: 1409: 1402: 1395: 1387: 1384: 1383: 1379: 1378: 1373: 1368: 1363: 1358: 1353: 1348: 1342: 1341: 1340: 1334: 1328: 1327: 1324: 1323: 1320: 1319: 1316:Linear algebra 1310: 1309: 1304: 1299: 1293: 1292: 1286: 1285: 1282: 1281: 1278: 1277: 1274:Lattice theory 1270: 1263: 1262: 1257: 1252: 1247: 1242: 1237: 1231: 1230: 1224: 1223: 1220: 1219: 1210: 1209: 1204: 1199: 1194: 1189: 1184: 1179: 1174: 1169: 1164: 1158: 1157: 1151: 1150: 1147: 1146: 1137: 1136: 1131: 1126: 1120: 1119: 1118: 1113: 1108: 1099: 1093: 1087: 1086: 1083: 1082: 1069: 1068:External links 1066: 1065: 1064: 1055: 1049: 1036: 1030: 1014: 1010:Lattice Theory 1003: 1000: 997: 996: 989: 969: 957: 945: 936: 927: 920: 900: 890: 889: 887: 884: 883: 882: 875: 872: 815: 814: 813: 812: 764: 758:distributivity 754: 753: 752: 751: 694: 691: 690: 689: 670: 620: 619: 616: 609: 607: 602: 597: 590: 588: 583: 578: 571: 569: 564: 559: 552: 550: 527: 526: 507: 504: 494: 493:Involution law 491: 473: 472:Complement law 452: 451: 407: 405: 398: 391: 390: 305: 303: 296: 284: 281: 258: 257: 256: 255: 201: 200: 199: 198: 149: 146: 51:discipline of 9: 6: 4: 3: 2: 2197: 2186: 2183: 2182: 2180: 2165: 2162: 2160: 2157: 2153: 2150: 2149: 2148: 2145: 2141: 2138: 2136: 2133: 2131: 2128: 2127: 2126: 2123: 2119: 2116: 2115: 2114: 2113:Ordered field 2111: 2109: 2106: 2102: 2099: 2097: 2094: 2093: 2092: 2089: 2085: 2082: 2081: 2080: 2077: 2075: 2072: 2070: 2069:Hasse diagram 2067: 2065: 2062: 2060: 2057: 2053: 2050: 2049: 2048: 2047:Comparability 2045: 2043: 2040: 2038: 2035: 2033: 2030: 2029: 2027: 2023: 2015: 2012: 2010: 2007: 2005: 2002: 2000: 1997: 1996: 1995: 1992: 1990: 1987: 1983: 1980: 1978: 1975: 1974: 1973: 1970: 1968: 1964: 1961: 1960: 1958: 1955: 1951: 1945: 1942: 1940: 1937: 1935: 1932: 1930: 1927: 1925: 1922: 1920: 1919:Product order 1917: 1915: 1912: 1910: 1907: 1905: 1902: 1900: 1897: 1896: 1894: 1892:Constructions 1890: 1884: 1880: 1876: 1873: 1869: 1866: 1864: 1861: 1859: 1856: 1854: 1851: 1849: 1846: 1844: 1841: 1839: 1836: 1834: 1831: 1827: 1824: 1823: 1822: 1819: 1817: 1814: 1810: 1807: 1805: 1802: 1800: 1797: 1795: 1792: 1791: 1790: 1789:Partial order 1787: 1785: 1782: 1778: 1777:Join and meet 1775: 1773: 1770: 1768: 1765: 1763: 1760: 1758: 1755: 1754: 1753: 1750: 1748: 1745: 1743: 1740: 1738: 1735: 1733: 1730: 1728: 1724: 1720: 1718: 1715: 1713: 1710: 1708: 1705: 1703: 1700: 1698: 1695: 1691: 1688: 1687: 1686: 1683: 1681: 1678: 1676: 1675:Antisymmetric 1673: 1672: 1670: 1666: 1660: 1654: 1651: 1649: 1646: 1644: 1641: 1639: 1636: 1634: 1631: 1629: 1626: 1624: 1621: 1619: 1616: 1614: 1611: 1609: 1606: 1604: 1601: 1599: 1596: 1595: 1593: 1589: 1583: 1582:Weak ordering 1580: 1578: 1575: 1573: 1570: 1568: 1567:Partial order 1565: 1563: 1560: 1558: 1555: 1553: 1550: 1548: 1545: 1544: 1542: 1538: 1532: 1529: 1527: 1524: 1522: 1519: 1518: 1515: 1511: 1504: 1499: 1497: 1492: 1490: 1485: 1484: 1481: 1473: 1472: 1467: 1463: 1459: 1458: 1453: 1449: 1445: 1444: 1439: 1435: 1431: 1430: 1425: 1421: 1420: 1408: 1403: 1401: 1396: 1394: 1389: 1388: 1386: 1385: 1377: 1374: 1372: 1369: 1367: 1364: 1362: 1359: 1357: 1354: 1352: 1349: 1347: 1344: 1343: 1339: 1336: 1335: 1331: 1326: 1325: 1318: 1317: 1313: 1312: 1308: 1305: 1303: 1300: 1298: 1295: 1294: 1289: 1284: 1283: 1276: 1275: 1271: 1269: 1266: 1265: 1261: 1258: 1256: 1253: 1251: 1248: 1246: 1243: 1241: 1238: 1236: 1233: 1232: 1227: 1222: 1221: 1216: 1215: 1208: 1205: 1203: 1202:Division ring 1200: 1198: 1195: 1193: 1190: 1188: 1185: 1183: 1180: 1178: 1175: 1173: 1170: 1168: 1165: 1163: 1160: 1159: 1154: 1149: 1148: 1143: 1142: 1135: 1132: 1130: 1127: 1125: 1124:Abelian group 1122: 1121: 1117: 1114: 1112: 1109: 1107: 1103: 1100: 1098: 1095: 1094: 1090: 1085: 1084: 1081: 1078: 1077: 1074: 1073: 1061: 1056: 1052: 1046: 1042: 1037: 1033: 1027: 1023: 1019: 1015: 1011: 1006: 1005: 992: 986: 982: 981: 973: 966: 961: 955:, p. 11. 954: 949: 940: 931: 923: 921:9780521461054 917: 913: 912: 904: 895: 891: 881: 878: 877: 871: 869: 865: 861: 857: 853: 849: 846: 845:propositional 842: 838: 834: 830: 827: 826:Hilbert space 823: 822:quantum logic 818: 811: 807: 803: 799: 795: 791: 787: 786: 785: 784: 783: 781: 777: 773: 768: 763: 759: 750: 746: 742: 738: 734: 730: 726: 722: 718: 717: 716: 715: 714: 712: 708: 704: 700: 687: 683: 679: 675: 671: 669: 665: 661: 657: 653: 652: 651: 649: 644: 642: 641:Hilbert space 639: 635: 632: 628: 627:quantum logic 624: 613: 608: 601: 594: 589: 582: 575: 570: 563: 556: 551: 548: 547: 546: 544: 540: 536: 532: 524: 520: 516: 512: 508: 505: 502: 498: 495: 492: 489: 485: 481: 477: 474: 471: 470: 469: 467: 463: 459: 448: 445: 437: 427: 422: 418: 414: 413: 406: 397: 396: 387: 384: 376: 365: 362: 358: 355: 351: 348: 344: 341: 337: 334: â€“  333: 329: 328:Find sources: 322: 318: 312: 311: 306:This section 304: 300: 295: 294: 290: 280: 278: 274: 269: 267: 263: 253: 249: 245: 241: 237: 233: 230: 229: 228: 227: 226: 224: 220: 216: 211: 210: 206: 196: 192: 188: 184: 181: 180: 179: 178: 177: 175: 171: 167: 163: 159: 158:least element 155: 145: 143: 139: 134: 132: 129:is called an 128: 124: 120: 116: 111: 109: 105: 100: 98: 95: âˆ§  94: 90: 87: âˆ¨  86: 82: 78: 74: 70: 66: 65:least element 62: 59:is a bounded 58: 54: 50: 34: 22: 21:Hasse diagram 18: 1956:& Orders 1934:Star product 1863:Well-founded 1816:Prefix order 1772:Distributive 1762:Complemented 1761: 1732:Foundational 1697:Completeness 1653:Zorn's lemma 1557:Cyclic order 1540:Key concepts 1510:Order theory 1469: 1455: 1441: 1427: 1376:Hopf algebra 1314: 1307:Vector space 1272: 1244: 1212: 1141:Group theory 1139: 1104: / 1059: 1040: 1021: 1009: 979: 972: 960: 953:Stern (1999) 948: 939: 930: 910: 903: 894: 867: 863: 859: 852:set products 819: 816: 809: 805: 801: 797: 793: 789: 779: 775: 771: 769: 761: 755: 748: 744: 740: 736: 732: 728: 724: 720: 710: 706: 702: 696: 685: 681: 677: 673: 667: 663: 659: 655: 645: 629:, where the 621: 599: 598:The lattice 580: 561: 535:ortholattice 534: 530: 528: 522: 518: 514: 510: 500: 496: 487: 483: 479: 475: 465: 461: 457: 455: 440: 431: 424:Please help 420: 409: 379: 370: 360: 353: 346: 339: 327: 315:Please help 310:verification 307: 277:vector space 270: 265: 261: 259: 251: 247: 243: 239: 235: 231: 222: 218: 214: 212: 208: 202: 194: 190: 186: 182: 173: 169: 165: 153: 151: 135: 130: 114: 112: 103: 101: 96: 92: 88: 84: 80: 76: 72: 56: 53:order theory 49:mathematical 46: 2140:Riesz space 2101:Isomorphism 1977:Normal cone 1899:Composition 1833:Semilattice 1742:Homogeneous 1727:Equivalence 1577:Total order 1361:Lie algebra 1346:Associative 1250:Total order 1240:Semilattice 1214:Ring theory 856:linear sums 829:formulation 434:August 2014 428:if you can. 373:August 2014 136:In bounded 127:modular law 83:satisfying 27:and a line 2108:Order type 2042:Cofinality 1883:Well-order 1858:Transitive 1747:Idempotent 1680:Asymmetric 1471:PlanetMath 1457:PlanetMath 1443:PlanetMath 1429:PlanetMath 1002:References 541:, and the 343:newspapers 287:See also: 225:such that 176:such that 170:complement 119:involution 77:complement 33:Fano plane 2159:Upper set 2096:Embedding 2032:Antichain 1853:Tolerance 1843:Symmetric 1838:Semiorder 1784:Reflexive 1702:Connected 1371:Bialgebra 1177:Near-ring 1134:Lie group 1102:Semigroup 638:separable 634:subspaces 273:subspaces 2179:Category 1954:Topology 1821:Preorder 1804:Eulerian 1767:Complete 1717:Directed 1707:Covering 1572:Preorder 1531:Category 1526:Glossary 1207:Lie ring 1172:Semiring 1020:(1971). 874:See also 848:calculus 482:= 1 and 410:require 121:that is 108:interval 2059:Duality 2037:Cofinal 2025:Related 2004:FrĂŠchet 1881:)  1757:Bounded 1752:Lattice 1725:)  1723:Partial 1591:Results 1562:Lattice 1338:Algebra 1330:Algebra 1235:Lattice 1226:Lattice 817:holds. 796:, then 727:, then 699:modular 412:cleanup 357:scholar 61:lattice 47:In the 31:of the 2084:Subnet 2064:Filter 2014:Normed 1999:Banach 1965:& 1872:Better 1809:Strict 1799:Graded 1690:topics 1521:Topics 1366:Graded 1297:Module 1288:Module 1187:Domain 1106:Monoid 1047:  1028:  987:  918:  631:closed 359:  352:  345:  338:  330:  168:has a 160:0 and 75:has a 67:0 and 63:(with 2074:Ideal 2052:Graph 1848:Total 1826:Total 1712:Dense 1332:-like 1290:-like 1228:-like 1197:Field 1155:-like 1129:Magma 1097:Group 1091:-like 1089:Group 886:Notes 778:. An 739:) = ( 636:of a 517:then 364:JSTOR 350:books 275:of a 1665:list 1162:Ring 1153:Ring 1045:ISBN 1026:ISBN 985:ISBN 916:ISBN 866:and 839:and 808:) = 747:) ∧ 709:and 680:) = 662:) = 490:= 0. 336:news 197:= 0. 55:, a 2079:Net 1879:Pre 1167:Rng 868:not 860:and 831:of 800:∨ ( 788:if 731:∨ ( 719:if 533:or 529:An 509:if 456:An 319:by 113:An 2181:: 1468:. 1454:. 1440:. 1426:. 864:or 862:, 854:, 835:. 804:∧ 792:≤ 774:= 743:∨ 735:∧ 723:≤ 705:, 684:∨ 676:∧ 666:∧ 658:∨ 650:: 521:≤ 513:≤ 499:= 486:∧ 478:∨ 250:= 246:∧ 238:= 234:∨ 193:∧ 185:∨ 152:A 144:. 133:. 102:A 1877:( 1874:) 1870:( 1721:( 1668:) 1502:e 1495:t 1488:v 1474:. 1460:. 1446:. 1432:. 1406:e 1399:t 1392:v 1053:. 1034:. 993:. 967:. 925:. 810:c 806:c 802:a 798:a 794:c 790:a 776:a 772:b 765:3 762:M 749:c 745:b 741:a 737:c 733:b 729:a 725:c 721:a 711:c 707:b 703:a 688:. 686:b 682:a 678:b 674:a 672:( 668:b 664:a 660:b 656:a 654:( 603:4 600:M 584:3 581:M 565:5 562:N 525:. 523:a 519:b 515:b 511:a 503:. 501:a 497:a 488:a 484:a 480:a 476:a 466:a 462:a 447:) 441:( 436:) 432:( 386:) 380:( 375:) 371:( 361:¡ 354:¡ 347:¡ 340:¡ 313:. 266:a 262:b 254:. 252:c 248:b 244:a 240:d 236:b 232:a 223:b 219:a 195:b 191:a 187:b 183:a 174:b 166:a 97:b 93:a 89:b 85:a 81:b 73:a 43:. 41:l 37:p 29:l 25:p

Index


Hasse diagram
Fano plane
mathematical
order theory
lattice
least element
greatest element
interval
involution
order-reversing
modular law
distributive lattices
Boolean algebra
least element
greatest element
distributive lattice
subspaces
vector space
De Morgan algebra

verification
improve this article
adding citations to reliable sources
"Complemented lattice"
news
newspapers
books
scholar
JSTOR

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