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Complement (set theory)

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5883: 52: 36: 3542: 1357: 229: 1180: 964: 736: 663: 2300: 1241: 2378: 2149: 2071: 1993: 359: 1033: 479: 2883: 1087: 2207: 1778: 1700: 1419: 1862: 1616: 827: 2450: 2588: 901: 864: 784: 2522: 2486: 2414: 433: 2654: 2622: 392: 108: 210: 3130: 1828: 1802: 1460: 1093: 2801: 2752: 2720: 2550: 907: 1530: 1493: 2979: 3025: 3002: 2953: 2930: 3150: 3045: 2903: 2821: 2772: 2688: 669: 596: 4262: 292: 3279:
The set in which the complement is considered is thus implicitly mentioned in an absolute complement, and explicitly mentioned in a relative complement.
2216: 4937: 3999: 3331: 1191: 2306: 2077: 1999: 1921: 2826: 5020: 4161: 1562: 987: 437: 5334: 3079: 5907: 5492: 3364: 4280: 5347: 4670: 3688: 3508: 3190: 1878: 1044: 2156: 1706: 1628: 1379: 1837: 790: 5352: 5342: 5079: 4932: 4285: 4016: 2420: 4276: 2555: 5488: 3424: 3390: 4830: 5585: 5329: 4154: 870: 833: 4890: 4583: 3994: 4324: 3874: 277:, either because it has been previously specified, or it is obvious and unique, then the absolute complement of 5846: 5548: 5311: 5306: 5131: 4552: 4236: 747: 17: 2492: 2456: 2384: 5841: 5624: 5541: 5254: 5185: 5062: 4304: 3768: 3647: 2627: 2595: 5766: 5592: 5278: 4912: 4511: 4011: 5912: 5644: 5639: 5249: 4988: 4917: 4246: 4147: 4004: 3642: 3605: 397: 5573: 5163: 4557: 4525: 4216: 3112:
is available in the amssymb package, but this symbol is not included separately in Unicode. The symbol
3659: 370: 86: 5863: 5812: 5709: 5207: 5168: 4645: 4290: 3693: 3585: 3573: 3568: 3184: 4319: 3329: 1175:{\displaystyle (A\setminus B)^{\complement }=A^{\complement }\cup B=A^{\complement }\cup (B\cap A).} 5704: 5634: 5173: 5025: 5008: 4731: 4211: 3501: 3104:, except that it has a little more space in front and behind the slash, akin to the LaTeX sequence 3051: 3047:
then corresponds to switching all 1s to 0s, and 0s to 1s for the logical matrix of the complement.
978: 959:{\displaystyle {\text{If }}A\subseteq B{\text{, then }}B^{\complement }\subseteq A^{\complement }.} 186: 3115: 1811: 1785: 1439: 5536: 5513: 5474: 5360: 5301: 4947: 4867: 4711: 4268: 4113: 4031: 3906: 3858: 3595: 3063: 2777: 2728: 2696: 2529: 5826: 5553: 5531: 5498: 5391: 5237: 5222: 5195: 5146: 5030: 4965: 4790: 4756: 4751: 4625: 4456: 4433: 4065: 3946: 3758: 3578: 1910: 548: 506: 3256: 2209:
demonstrating that intersection can be expressed using only the relative complement operation.
5756: 5609: 5401: 5119: 4855: 4761: 4620: 4605: 4486: 4461: 3981: 3951: 3895: 3815: 3795: 3773: 3067: 521: 133: 129: 118: 3229: 5729: 5691: 5568: 5372: 5212: 5136: 5114: 4942: 4900: 4799: 4766: 4630: 4418: 4329: 4055: 4045: 3879: 3810: 3763: 3703: 3590: 3202: 3434: 3400: 1506: 1469: 731:{\displaystyle \left(A\cap B\right)^{\complement }=A^{\complement }\cup B^{\complement }.} 658:{\displaystyle \left(A\cup B\right)^{\complement }=A^{\complement }\cap B^{\complement }.} 8: 5858: 5749: 5734: 5714: 5671: 5558: 5508: 5434: 5379: 5316: 5109: 5104: 5052: 4820: 4809: 4481: 4381: 4309: 4300: 4296: 4231: 4226: 4050: 3961: 3869: 3864: 3678: 3620: 3558: 3494: 2958: 1500: 587: 3007: 2984: 2935: 2912: 5887: 5656: 5619: 5604: 5597: 5580: 5384: 5366: 5232: 5158: 5141: 5094: 4907: 4816: 4650: 4635: 4595: 4547: 4532: 4520: 4476: 4451: 4221: 4170: 3973: 3968: 3753: 3708: 3615: 3208: 3135: 3030: 2888: 2806: 2757: 2673: 1496: 1275: 533: 514: 4840: 5882: 5822: 5629: 5439: 5429: 5321: 5202: 5037: 5013: 4794: 4778: 4683: 4660: 4537: 4506: 4471: 4366: 4201: 3830: 3667: 3630: 3600: 3531: 3469: 3450: 3420: 3413: 3386: 3360: 3055: 1865: 77: 517:
to 1 or 2 modulo 3 (or, in simpler terms, the integers that are not multiples of 3).
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be a set that contains all the elements under study; if there is no need to mention
5836: 5831: 5724: 5681: 5503: 5464: 5459: 5444: 5270: 5227: 5124: 4922: 4872: 4446: 4408: 4118: 4108: 4093: 4088: 3956: 3610: 3472: 3430: 3396: 3352: 3196: 5817: 5807: 5761: 5744: 5699: 5661: 5563: 5483: 5290: 5217: 5190: 5178: 5084: 4998: 4972: 4927: 4895: 4696: 4498: 4441: 4391: 4356: 4314: 3987: 3925: 3743: 3563: 3382: 3335: 3178: 3059: 2691: 2668: 1882: 1831: 584:. The following identities capture important properties of absolute complements: 3453: 5802: 5781: 5739: 5719: 5614: 5469: 5067: 5057: 5047: 5042: 4976: 4850: 4726: 4615: 4610: 4588: 4189: 4123: 3920: 3901: 3805: 3790: 3747: 3683: 3625: 2906: 2295:{\displaystyle (B\setminus A)\cap C=(B\cap C)\setminus A=B\cap (C\setminus A).} 969: 555:, the absolute complement of a set is generally not itself a set, but rather a 5901: 5776: 5454: 4961: 4746: 4736: 4706: 4691: 4361: 4128: 3930: 3844: 3839: 3092:
is usually used for rendering a set difference symbol, which is similar to a
1253: 560: 4098: 3419:. The University Series in Undergraduate Mathematics. van Nostrand Company. 5676: 5523: 5424: 5416: 5296: 5244: 5153: 5089: 5072: 5003: 4862: 4721: 4423: 4206: 4078: 4073: 3891: 3820: 3778: 3637: 3541: 3374: 556: 1463: 5786: 5666: 4845: 4835: 4782: 4466: 4386: 4371: 4251: 4196: 4103: 3738: 3408: 1805: 1236:{\displaystyle A^{\complement }\setminus B^{\complement }=B\setminus A.} 540:
is the union of the suits of clubs and diamonds, then the complement of
4716: 4571: 4542: 4348: 4083: 3854: 3517: 2373:{\displaystyle (B\setminus A)\cup C=(B\cup C)\setminus (A\setminus C).} 2144:{\displaystyle C\setminus (B\setminus A)=(C\cap A)\cup (C\setminus B),} 2066:{\displaystyle C\setminus (A\cup B)=(C\setminus A)\cap (C\setminus B).} 1988:{\displaystyle C\setminus (A\cap B)=(C\setminus A)\cup (C\setminus B).} 552: 69: 1356: 269:(within a larger set that is implicitly defined). In other words, let 5868: 5771: 4824: 4741: 4701: 4665: 4601: 4413: 4403: 4376: 4139: 3886: 3849: 3800: 3698: 3477: 3458: 3093: 5853: 5651: 5099: 4804: 4398: 354:{\displaystyle A^{\complement }=U\setminus A=\{x\in U:x\notin A\}.} 3323: 3257:"Complement (set) Definition (Illustrated Mathematics Dictionary)" 1495:
but this notation is ambiguous, as in some contexts (for example,
5449: 4241: 490: 3911: 3733: 1028:{\displaystyle \left(A^{\complement }\right)^{\complement }=A.} 474:{\displaystyle \complement _{U}A,{\text{ and }}\complement A.} 132:, i.e. all elements under consideration, are considered to be 4993: 4339: 4184: 3783: 3550: 3486: 3085: 968:(this follows from the equivalence of a conditional with its 1038:
Relationships between relative and absolute complements:
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of the suits of clubs, diamonds, and hearts. If the set
3467: 2878:{\displaystyle {\bar {R}}\ =\ (X\times Y)\setminus R.} 3138: 3118: 3033: 3010: 2987: 2961: 2938: 2915: 2891: 2829: 2809: 2780: 2760: 2731: 2699: 2676: 2630: 2598: 2558: 2532: 2495: 2459: 2423: 2387: 2309: 2219: 2159: 2080: 2002: 1924: 1840: 1814: 1788: 1709: 1631: 1565: 1509: 1472: 1442: 1382: 1194: 1096: 1047: 990: 910: 873: 836: 793: 750: 672: 599: 440: 400: 373: 295: 189: 89: 1913:
capture notable properties of relative complements:
1082:{\displaystyle A\setminus B=A\cap B^{\complement }.} 3448: 3181: â€“ Identities and relationships involving sets 2202:{\displaystyle C\setminus (C\setminus A)=(C\cap A)} 1773:{\displaystyle \{2,3,4\}\setminus \{1,2,3\}=\{4\}.} 1695:{\displaystyle \{1,2,3\}\setminus \{2,3,4\}=\{1\}.} 1503:) it can be interpreted as the set of all elements 1414:{\displaystyle B\cap A^{\complement }=B\setminus A} 3412: 3187: â€“ Set of elements common to all of some sets 3144: 3124: 3039: 3019: 2996: 2973: 2947: 2924: 2897: 2877: 2815: 2795: 2766: 2746: 2714: 2682: 2648: 2616: 2582: 2544: 2516: 2480: 2444: 2408: 2372: 2294: 2201: 2143: 2065: 1987: 1857:{\displaystyle \mathbb {R} \setminus \mathbb {Q} } 1856: 1822: 1796: 1772: 1694: 1611:{\displaystyle B\setminus A=\{x\in B:x\notin A\}.} 1610: 1524: 1487: 1454: 1413: 1235: 1174: 1081: 1027: 958: 895: 858: 822:{\displaystyle A\cap A^{\complement }=\emptyset .} 821: 778: 730: 657: 497:is the set of odd numbers, then the complement of 473: 427: 386: 353: 204: 102: 2445:{\displaystyle \emptyset \setminus A=\emptyset .} 1246:The first two complement laws above show that if 5899: 2583:{\displaystyle C\setminus A\supset C\setminus B} 544:is the union of the suits of hearts and spades. 528:is the suit of spades, then the complement of 4155: 3502: 3301: 3299: 3297: 1764: 1758: 1752: 1734: 1728: 1710: 1686: 1680: 1674: 1656: 1650: 1632: 1602: 1578: 896:{\displaystyle U^{\complement }=\emptyset .} 859:{\displaystyle \emptyset ^{\complement }=U.} 345: 321: 3211: â€“ Set of elements in any of some sets 3205: â€“ Elements in exactly one of two sets 3193: â€“ Equalities for combinations of sets 4347: 4162: 4148: 3509: 3495: 3294: 2662: 1850: 1842: 1816: 1790: 779:{\displaystyle A\cup A^{\complement }=U.} 27:Set of the elements not in a given subset 3351: 3288: 3156:. (It corresponds to the Unicode symbol 3027:Producing the complementary relation to 2517:{\displaystyle A\setminus U=\emptyset .} 2481:{\displaystyle A\setminus \emptyset =A.} 2409:{\displaystyle A\setminus A=\emptyset .} 1355: 227: 3379:Fundamentals of contemporary set theory 3080:List of mathematical symbols by subject 2909:with rows representing the elements of 2649:{\displaystyle C\supseteq B\setminus A} 2617:{\displaystyle A\supseteq B\setminus C} 489:Assume that the universe is the set of 14: 5900: 4169: 3407: 3373: 3317: 3305: 1287: 223: 45:is the area colored red in this image
 4143: 3490: 3468: 3449: 3251: 3249: 3191:List of set identities and relations 1879:List of set identities and relations 1185:Relationship with a set difference: 3338:The Comprehensive LaTeX Symbol List 428:{\displaystyle {\overline {A}},A',} 236:of the white disc is the red region 24: 3282: 3088:typesetting language, the command 3058:, complementary relations and the 2508: 2466: 2436: 2424: 2400: 887: 838: 813: 25: 5924: 3442: 3246: 3073: 2866: 2640: 2608: 2574: 2562: 2499: 2463: 2427: 2391: 2358: 2349: 2316: 2280: 2259: 2226: 2172: 2163: 2129: 2093: 2084: 2051: 2033: 2006: 1973: 1955: 1928: 1846: 1731: 1653: 1569: 1446: 1405: 1224: 1205: 1103: 1051: 312: 193: 5881: 3540: 2153:with the important special case 520:Assume that the universe is the 387:{\displaystyle A^{\complement }} 265:) is the set of elements not in 103:{\displaystyle A^{\complement }} 50: 34: 3230:"Complement and Set Difference" 1872: 1292: 501:is the set of even numbers. If 3516: 3311: 3273: 3222: 2863: 2851: 2836: 2738: 2364: 2352: 2346: 2334: 2322: 2310: 2286: 2274: 2256: 2244: 2232: 2220: 2196: 2184: 2178: 2166: 2135: 2123: 2117: 2105: 2099: 2087: 2057: 2045: 2039: 2027: 2021: 2009: 1979: 1967: 1961: 1949: 1943: 1931: 1166: 1154: 1110: 1097: 281:is the relative complement of 13: 1: 5842:History of mathematical logic 3359:(in French). Paris: Hermann. 3345: 3199: â€“ Informal set theories 1620: 567: 509:of 3, then the complement of 240: 205:{\displaystyle B\setminus A,} 5908:Basic concepts in set theory 5767:Primitive recursive function 3125:{\displaystyle \complement } 2690:is defined as a subset of a 1905:be three sets in a universe 1823:{\displaystyle \mathbb {Q} } 1797:{\displaystyle \mathbb {R} } 1455:{\displaystyle B\setminus A} 1341:, is the set of elements in 406: 7: 3172: 3100:command looks identical to 3096:symbol. When rendered, the 2803:The complement of relation 1424:The relative complement of 483: 363:The absolute complement of 10: 5929: 4831:Schröder–Bernstein theorem 4558:Monadic predicate calculus 4217:Foundations of mathematics 4000:von Neumann–Bernays–Gödel 3077: 2796:{\displaystyle X\times Y.} 2747:{\displaystyle {\bar {R}}} 2715:{\displaystyle X\times Y.} 2545:{\displaystyle A\subset B} 1876: 1466:. It is sometimes written 981:or double complement law: 580:be two sets in a universe 394:. Other notations include 212:is the set of elements in 148:is the set of elements in 5877: 5864:Philosophy of mathematics 5813:Automated theorem proving 5795: 5690: 5522: 5415: 5267: 4984: 4960: 4938:Von Neumann–Bernays–Gödel 4883: 4777: 4681: 4579: 4570: 4497: 4432: 4338: 4260: 4177: 4064: 4027: 3939: 3829: 3801:One-to-one correspondence 3717: 3658: 3549: 3538: 3524: 3185:Intersection (set theory) 2754:is the set complement of 547:When the universe is the 128:When all elements in the 57:
 then the complement of 3215: 3052:composition of relations 2981:corresponds to 1 in row 2932:and columns elements of 1497:Minkowski set operations 551:described in formalized 5514:Self-verifying theories 5335:Tarski's axiomatization 4286:Tarski's undefinability 4281:incompleteness theorems 5888:Mathematics portal 5499:Proof of impossibility 5147:propositional variable 4457:Propositional calculus 3759:Constructible universe 3586:Constructibility (V=L) 3146: 3126: 3041: 3021: 2998: 2975: 2949: 2926: 2899: 2879: 2817: 2797: 2768: 2748: 2724:complementary relation 2716: 2684: 2663:Complementary relation 2650: 2618: 2584: 2546: 2518: 2482: 2446: 2410: 2374: 2296: 2203: 2145: 2067: 1989: 1858: 1824: 1798: 1774: 1696: 1612: 1526: 1489: 1456: 1421: 1415: 1237: 1176: 1083: 1029: 960: 897: 860: 823: 780: 732: 659: 559:. For more info, see 513:is the set of numbers 475: 429: 388: 367:is usually denoted by 355: 237: 206: 167:with respect to a set 104: 5757:Kolmogorov complexity 5710:Computably enumerable 5610:Model complete theory 5402:Principia Mathematica 4462:Propositional formula 4291:Banach–Tarski paradox 3982:Principia Mathematica 3816:Transfinite induction 3675:(i.e. set difference) 3357:ThĂ©orie des ensembles 3147: 3127: 3068:calculus of relations 3042: 3022: 2999: 2976: 2950: 2927: 2905:is often viewed as a 2900: 2880: 2818: 2798: 2769: 2749: 2717: 2685: 2651: 2619: 2585: 2547: 2519: 2483: 2447: 2411: 2375: 2297: 2204: 2146: 2068: 1990: 1859: 1825: 1799: 1775: 1697: 1613: 1527: 1490: 1457: 1416: 1359: 1238: 1177: 1084: 1030: 961: 898: 861: 824: 781: 733: 660: 522:standard 52-card deck 476: 430: 389: 356: 231: 207: 105: 5705:Church–Turing thesis 5692:Computability theory 4901:continuum hypothesis 4419:Square of opposition 4277:Gödel's completeness 4056:Burali-Forti paradox 3811:Set-builder notation 3764:Continuum hypothesis 3704:Symmetric difference 3203:Symmetric difference 3136: 3116: 3106:\mathbin{\backslash} 3031: 3008: 2985: 2959: 2936: 2913: 2889: 2827: 2807: 2778: 2758: 2729: 2697: 2674: 2628: 2596: 2556: 2530: 2493: 2457: 2421: 2385: 2307: 2217: 2157: 2078: 2000: 1922: 1838: 1812: 1786: 1707: 1629: 1563: 1525:{\displaystyle b-a,} 1507: 1488:{\displaystyle B-A,} 1470: 1440: 1380: 1192: 1094: 1045: 988: 908: 871: 834: 791: 748: 670: 597: 438: 398: 371: 293: 187: 87: 5859:Mathematical object 5750:P versus NP problem 5715:Computable function 5509:Reverse mathematics 5435:Logical consequence 5312:primitive recursive 5307:elementary function 5080:Free/bound variable 4933:Tarski–Grothendieck 4452:Logical connectives 4382:Logical equivalence 4232:Logical consequence 4017:Tarski–Grothendieck 3062:are the elementary 2974:{\displaystyle aRb} 1501:functional analysis 1362:relative complement 1311:relative complement 1309:are sets, then the 1288:Relative complement 251:absolute complement 249:is a set, then the 234:absolute complement 224:Absolute complement 161:relative complement 142:absolute complement 83:, often denoted by 61:is everything else. 5913:Operations on sets 5657:Transfer principle 5620:Semantics of logic 5605:Categorical theory 5581:Non-standard model 5095:Logical connective 4222:Information theory 4171:Mathematical logic 3606:Limitation of size 3470:Weisstein, Eric W. 3451:Weisstein, Eric W. 3334:2022-03-05 at the 3261:www.mathsisfun.com 3209:Union (set theory) 3142: 3122: 3056:converse relations 3037: 3020:{\displaystyle b.} 3017: 2997:{\displaystyle a,} 2994: 2971: 2948:{\displaystyle Y.} 2945: 2925:{\displaystyle X,} 2922: 2895: 2875: 2813: 2793: 2764: 2744: 2712: 2680: 2646: 2614: 2580: 2542: 2514: 2478: 2442: 2406: 2370: 2292: 2199: 2141: 2063: 1985: 1866:irrational numbers 1854: 1820: 1794: 1770: 1692: 1608: 1522: 1485: 1464:ISO 31-11 standard 1452: 1422: 1411: 1325:, also termed the 1233: 1172: 1079: 1025: 956: 893: 856: 819: 776: 728: 655: 471: 425: 384: 351: 238: 202: 171:, also termed the 100: 5895: 5894: 5827:Abstract category 5630:Theories of truth 5440:Rule of inference 5430:Natural deduction 5411: 5410: 4956: 4955: 4661:Cartesian product 4566: 4565: 4472:Many-valued logic 4447:Boolean functions 4330:Russell's paradox 4305:diagonal argument 4202:First-order logic 4137: 4136: 4046:Russell's paradox 3995:Zermelo–Fraenkel 3896:Dedekind-infinite 3769:Diagonal argument 3668:Cartesian product 3532:Set (mathematics) 3366:978-3-540-34034-8 3291:, p. E II.6. 3152:) is produced by 3145:{\displaystyle C} 3040:{\displaystyle R} 2898:{\displaystyle R} 2850: 2844: 2839: 2816:{\displaystyle R} 2767:{\displaystyle R} 2741: 2683:{\displaystyle R} 2624:is equivalent to 1462:according to the 928: 914: 741:Complement laws: 460: 409: 117:), is the set of 16:(Redirected from 5920: 5886: 5885: 5837:History of logic 5832:Category of sets 5725:Decision problem 5504:Ordinal analysis 5445:Sequent calculus 5343:Boolean algebras 5283: 5282: 5257: 5228:logical/constant 4982: 4981: 4968: 4891:Zermelo–Fraenkel 4642:Set operations: 4577: 4576: 4514: 4345: 4344: 4325:Löwenheim–Skolem 4212:Formal semantics 4164: 4157: 4150: 4141: 4140: 4119:Bertrand Russell 4109:John von Neumann 4094:Abraham Fraenkel 4089:Richard Dedekind 4051:Suslin's problem 3962:Cantor's theorem 3679:De Morgan's laws 3544: 3511: 3504: 3497: 3488: 3487: 3483: 3482: 3473:"Complement Set" 3464: 3463: 3438: 3418: 3415:Naive set theory 3404: 3381:. Universitext. 3375:Devlin, Keith J. 3370: 3339: 3327: 3321: 3315: 3309: 3303: 3292: 3286: 3280: 3277: 3271: 3270: 3268: 3267: 3253: 3244: 3243: 3241: 3240: 3226: 3197:Naive set theory 3168: 3165: 3162: 3160: 3155: 3151: 3149: 3148: 3143: 3131: 3129: 3128: 3123: 3111: 3107: 3103: 3099: 3091: 3046: 3044: 3043: 3038: 3026: 3024: 3023: 3018: 3003: 3001: 3000: 2995: 2980: 2978: 2977: 2972: 2954: 2952: 2951: 2946: 2931: 2929: 2928: 2923: 2904: 2902: 2901: 2896: 2884: 2882: 2881: 2876: 2848: 2842: 2841: 2840: 2832: 2822: 2820: 2819: 2814: 2802: 2800: 2799: 2794: 2773: 2771: 2770: 2765: 2753: 2751: 2750: 2745: 2743: 2742: 2734: 2721: 2719: 2718: 2713: 2689: 2687: 2686: 2681: 2655: 2653: 2652: 2647: 2623: 2621: 2620: 2615: 2589: 2587: 2586: 2581: 2551: 2549: 2548: 2543: 2523: 2521: 2520: 2515: 2487: 2485: 2484: 2479: 2451: 2449: 2448: 2443: 2415: 2413: 2412: 2407: 2379: 2377: 2376: 2371: 2301: 2299: 2298: 2293: 2208: 2206: 2205: 2200: 2150: 2148: 2147: 2142: 2072: 2070: 2069: 2064: 1994: 1992: 1991: 1986: 1909:. The following 1908: 1904: 1898: 1892: 1863: 1861: 1860: 1855: 1853: 1845: 1832:rational numbers 1829: 1827: 1826: 1821: 1819: 1803: 1801: 1800: 1795: 1793: 1779: 1777: 1776: 1771: 1701: 1699: 1698: 1693: 1617: 1615: 1614: 1609: 1555: 1549: 1543: 1537: 1531: 1529: 1528: 1523: 1494: 1492: 1491: 1486: 1461: 1459: 1458: 1453: 1435: 1429: 1420: 1418: 1417: 1412: 1398: 1397: 1375: 1369: 1352: 1346: 1340: 1334: 1324: 1318: 1308: 1302: 1283: 1273: 1261: 1252:is a non-empty, 1251: 1242: 1240: 1239: 1234: 1217: 1216: 1204: 1203: 1181: 1179: 1178: 1173: 1150: 1149: 1131: 1130: 1118: 1117: 1088: 1086: 1085: 1080: 1075: 1074: 1034: 1032: 1031: 1026: 1015: 1014: 1009: 1005: 1004: 965: 963: 962: 957: 952: 951: 939: 938: 929: 926: 915: 912: 902: 900: 899: 894: 883: 882: 865: 863: 862: 857: 846: 845: 828: 826: 825: 820: 809: 808: 785: 783: 782: 777: 766: 765: 737: 735: 734: 729: 724: 723: 711: 710: 698: 697: 692: 688: 664: 662: 661: 656: 651: 650: 638: 637: 625: 624: 619: 615: 588:De Morgan's laws 583: 579: 575: 549:universe of sets 543: 539: 531: 527: 512: 504: 500: 496: 480: 478: 477: 472: 461: 458: 450: 449: 434: 432: 431: 426: 421: 410: 402: 393: 391: 390: 385: 383: 382: 366: 360: 358: 357: 352: 305: 304: 288: 284: 280: 276: 272: 268: 264: 256: 248: 219: 216:that are not in 215: 211: 209: 208: 203: 182: 178: 170: 166: 155: 152:that are not in 151: 147: 139: 124: 116: 109: 107: 106: 101: 99: 98: 82: 60: 54: 44: 38: 21: 5928: 5927: 5923: 5922: 5921: 5919: 5918: 5917: 5898: 5897: 5896: 5891: 5880: 5873: 5818:Category theory 5808:Algebraic logic 5791: 5762:Lambda calculus 5700:Church encoding 5686: 5662:Truth predicate 5518: 5484:Complete theory 5407: 5276: 5272: 5268: 5263: 5255: 4975: and  4971: 4966: 4952: 4928:New Foundations 4896:axiom of choice 4879: 4841:Gödel numbering 4781: and  4773: 4677: 4562: 4512: 4493: 4442:Boolean algebra 4428: 4392:Equiconsistency 4357:Classical logic 4334: 4315:Halting problem 4303: and  4279: and  4267: and  4266: 4261:Theorems ( 4256: 4173: 4168: 4138: 4133: 4060: 4039: 4023: 3988:New Foundations 3935: 3825: 3744:Cardinal number 3727: 3713: 3654: 3545: 3536: 3520: 3515: 3445: 3427: 3409:Halmos, Paul R. 3393: 3367: 3348: 3343: 3342: 3336:Wayback Machine 3328: 3324: 3316: 3312: 3304: 3295: 3287: 3283: 3278: 3274: 3265: 3263: 3255: 3254: 3247: 3238: 3236: 3234:web.mnstate.edu 3228: 3227: 3223: 3218: 3179:Algebra of sets 3175: 3166: 3163: 3158: 3157: 3153: 3137: 3134: 3133: 3132:(as opposed to 3117: 3114: 3113: 3109: 3105: 3101: 3097: 3089: 3082: 3076: 3060:algebra of sets 3032: 3029: 3028: 3009: 3006: 3005: 2986: 2983: 2982: 2960: 2957: 2956: 2937: 2934: 2933: 2914: 2911: 2910: 2890: 2887: 2886: 2831: 2830: 2828: 2825: 2824: 2823:can be written 2808: 2805: 2804: 2779: 2776: 2775: 2759: 2756: 2755: 2733: 2732: 2730: 2727: 2726: 2698: 2695: 2694: 2692:product of sets 2675: 2672: 2671: 2669:binary relation 2665: 2629: 2626: 2625: 2597: 2594: 2593: 2557: 2554: 2553: 2531: 2528: 2527: 2494: 2491: 2490: 2458: 2455: 2454: 2422: 2419: 2418: 2386: 2383: 2382: 2308: 2305: 2304: 2218: 2215: 2214: 2158: 2155: 2154: 2079: 2076: 2075: 2001: 1998: 1997: 1923: 1920: 1919: 1906: 1900: 1894: 1888: 1885: 1883:Algebra of sets 1875: 1849: 1841: 1839: 1836: 1835: 1815: 1813: 1810: 1809: 1789: 1787: 1784: 1783: 1708: 1705: 1704: 1630: 1627: 1626: 1623: 1564: 1561: 1560: 1551: 1545: 1539: 1533: 1508: 1505: 1504: 1471: 1468: 1467: 1441: 1438: 1437: 1431: 1425: 1393: 1389: 1381: 1378: 1377: 1371: 1365: 1348: 1342: 1336: 1330: 1320: 1314: 1304: 1298: 1295: 1290: 1279: 1263: 1257: 1247: 1212: 1208: 1199: 1195: 1193: 1190: 1189: 1145: 1141: 1126: 1122: 1113: 1109: 1095: 1092: 1091: 1070: 1066: 1046: 1043: 1042: 1010: 1000: 996: 992: 991: 989: 986: 985: 947: 943: 934: 930: 925: 911: 909: 906: 905: 878: 874: 872: 869: 868: 841: 837: 835: 832: 831: 804: 800: 792: 789: 788: 761: 757: 749: 746: 745: 719: 715: 706: 702: 693: 678: 674: 673: 671: 668: 667: 646: 642: 633: 629: 620: 605: 601: 600: 598: 595: 594: 581: 577: 573: 570: 541: 537: 529: 525: 510: 502: 498: 494: 486: 459: and  457: 445: 441: 439: 436: 435: 414: 401: 399: 396: 395: 378: 374: 372: 369: 368: 364: 300: 296: 294: 291: 290: 286: 282: 278: 274: 270: 266: 262: 257:(or simply the 254: 246: 243: 226: 217: 213: 188: 185: 184: 180: 176: 168: 164: 153: 149: 145: 137: 136:of a given set 122: 111: 94: 90: 88: 85: 84: 80: 66: 65: 64: 63: 62: 58: 55: 47: 46: 42: 39: 28: 23: 22: 15: 12: 11: 5: 5926: 5916: 5915: 5910: 5893: 5892: 5878: 5875: 5874: 5872: 5871: 5866: 5861: 5856: 5851: 5850: 5849: 5839: 5834: 5829: 5820: 5815: 5810: 5805: 5803:Abstract logic 5799: 5797: 5793: 5792: 5790: 5789: 5784: 5782:Turing machine 5779: 5774: 5769: 5764: 5759: 5754: 5753: 5752: 5747: 5742: 5737: 5732: 5722: 5720:Computable set 5717: 5712: 5707: 5702: 5696: 5694: 5688: 5687: 5685: 5684: 5679: 5674: 5669: 5664: 5659: 5654: 5649: 5648: 5647: 5642: 5637: 5627: 5622: 5617: 5615:Satisfiability 5612: 5607: 5602: 5601: 5600: 5590: 5589: 5588: 5578: 5577: 5576: 5571: 5566: 5561: 5556: 5546: 5545: 5544: 5539: 5532:Interpretation 5528: 5526: 5520: 5519: 5517: 5516: 5511: 5506: 5501: 5496: 5486: 5481: 5480: 5479: 5478: 5477: 5467: 5462: 5452: 5447: 5442: 5437: 5432: 5427: 5421: 5419: 5413: 5412: 5409: 5408: 5406: 5405: 5397: 5396: 5395: 5394: 5389: 5388: 5387: 5382: 5377: 5357: 5356: 5355: 5353:minimal axioms 5350: 5339: 5338: 5337: 5326: 5325: 5324: 5319: 5314: 5309: 5304: 5299: 5286: 5284: 5265: 5264: 5262: 5261: 5260: 5259: 5247: 5242: 5241: 5240: 5235: 5230: 5225: 5215: 5210: 5205: 5200: 5199: 5198: 5193: 5183: 5182: 5181: 5176: 5171: 5166: 5156: 5151: 5150: 5149: 5144: 5139: 5129: 5128: 5127: 5122: 5117: 5112: 5107: 5102: 5092: 5087: 5082: 5077: 5076: 5075: 5070: 5065: 5060: 5050: 5045: 5043:Formation rule 5040: 5035: 5034: 5033: 5028: 5018: 5017: 5016: 5006: 5001: 4996: 4991: 4985: 4979: 4962:Formal systems 4958: 4957: 4954: 4953: 4951: 4950: 4945: 4940: 4935: 4930: 4925: 4920: 4915: 4910: 4905: 4904: 4903: 4898: 4887: 4885: 4881: 4880: 4878: 4877: 4876: 4875: 4865: 4860: 4859: 4858: 4851:Large cardinal 4848: 4843: 4838: 4833: 4828: 4814: 4813: 4812: 4807: 4802: 4787: 4785: 4775: 4774: 4772: 4771: 4770: 4769: 4764: 4759: 4749: 4744: 4739: 4734: 4729: 4724: 4719: 4714: 4709: 4704: 4699: 4694: 4688: 4686: 4679: 4678: 4676: 4675: 4674: 4673: 4668: 4663: 4658: 4653: 4648: 4640: 4639: 4638: 4633: 4623: 4618: 4616:Extensionality 4613: 4611:Ordinal number 4608: 4598: 4593: 4592: 4591: 4580: 4574: 4568: 4567: 4564: 4563: 4561: 4560: 4555: 4550: 4545: 4540: 4535: 4530: 4529: 4528: 4518: 4517: 4516: 4503: 4501: 4495: 4494: 4492: 4491: 4490: 4489: 4484: 4479: 4469: 4464: 4459: 4454: 4449: 4444: 4438: 4436: 4430: 4429: 4427: 4426: 4421: 4416: 4411: 4406: 4401: 4396: 4395: 4394: 4384: 4379: 4374: 4369: 4364: 4359: 4353: 4351: 4342: 4336: 4335: 4333: 4332: 4327: 4322: 4317: 4312: 4307: 4295:Cantor's  4293: 4288: 4283: 4273: 4271: 4258: 4257: 4255: 4254: 4249: 4244: 4239: 4234: 4229: 4224: 4219: 4214: 4209: 4204: 4199: 4194: 4193: 4192: 4181: 4179: 4175: 4174: 4167: 4166: 4159: 4152: 4144: 4135: 4134: 4132: 4131: 4126: 4124:Thoralf Skolem 4121: 4116: 4111: 4106: 4101: 4096: 4091: 4086: 4081: 4076: 4070: 4068: 4062: 4061: 4059: 4058: 4053: 4048: 4042: 4040: 4038: 4037: 4034: 4028: 4025: 4024: 4022: 4021: 4020: 4019: 4014: 4009: 4008: 4007: 3992: 3991: 3990: 3978: 3977: 3976: 3965: 3964: 3959: 3954: 3949: 3943: 3941: 3937: 3936: 3934: 3933: 3928: 3923: 3918: 3909: 3904: 3899: 3889: 3884: 3883: 3882: 3877: 3872: 3862: 3852: 3847: 3842: 3836: 3834: 3827: 3826: 3824: 3823: 3818: 3813: 3808: 3806:Ordinal number 3803: 3798: 3793: 3788: 3787: 3786: 3781: 3771: 3766: 3761: 3756: 3751: 3741: 3736: 3730: 3728: 3726: 3725: 3722: 3718: 3715: 3714: 3712: 3711: 3706: 3701: 3696: 3691: 3686: 3684:Disjoint union 3681: 3676: 3670: 3664: 3662: 3656: 3655: 3653: 3652: 3651: 3650: 3645: 3634: 3633: 3631:Martin's axiom 3628: 3623: 3618: 3613: 3608: 3603: 3598: 3596:Extensionality 3593: 3588: 3583: 3582: 3581: 3576: 3571: 3561: 3555: 3553: 3547: 3546: 3539: 3537: 3535: 3534: 3528: 3526: 3522: 3521: 3514: 3513: 3506: 3499: 3491: 3485: 3484: 3465: 3444: 3443:External links 3441: 3440: 3439: 3425: 3405: 3391: 3371: 3365: 3347: 3344: 3341: 3340: 3322: 3310: 3293: 3281: 3272: 3245: 3220: 3219: 3217: 3214: 3213: 3212: 3206: 3200: 3194: 3188: 3182: 3174: 3171: 3141: 3121: 3110:\smallsetminus 3075: 3074:LaTeX notation 3072: 3050:Together with 3036: 3016: 3013: 2993: 2990: 2970: 2967: 2964: 2944: 2941: 2921: 2918: 2907:logical matrix 2894: 2874: 2871: 2868: 2865: 2862: 2859: 2856: 2853: 2847: 2838: 2835: 2812: 2792: 2789: 2786: 2783: 2763: 2740: 2737: 2711: 2708: 2705: 2702: 2679: 2664: 2661: 2660: 2659: 2658: 2657: 2645: 2642: 2639: 2636: 2633: 2613: 2610: 2607: 2604: 2601: 2591: 2579: 2576: 2573: 2570: 2567: 2564: 2561: 2541: 2538: 2535: 2524: 2513: 2510: 2507: 2504: 2501: 2498: 2488: 2477: 2474: 2471: 2468: 2465: 2462: 2452: 2441: 2438: 2435: 2432: 2429: 2426: 2416: 2405: 2402: 2399: 2396: 2393: 2390: 2380: 2369: 2366: 2363: 2360: 2357: 2354: 2351: 2348: 2345: 2342: 2339: 2336: 2333: 2330: 2327: 2324: 2321: 2318: 2315: 2312: 2302: 2291: 2288: 2285: 2282: 2279: 2276: 2273: 2270: 2267: 2264: 2261: 2258: 2255: 2252: 2249: 2246: 2243: 2240: 2237: 2234: 2231: 2228: 2225: 2222: 2212: 2211: 2210: 2198: 2195: 2192: 2189: 2186: 2183: 2180: 2177: 2174: 2171: 2168: 2165: 2162: 2140: 2137: 2134: 2131: 2128: 2125: 2122: 2119: 2116: 2113: 2110: 2107: 2104: 2101: 2098: 2095: 2092: 2089: 2086: 2083: 2073: 2062: 2059: 2056: 2053: 2050: 2047: 2044: 2041: 2038: 2035: 2032: 2029: 2026: 2023: 2020: 2017: 2014: 2011: 2008: 2005: 1995: 1984: 1981: 1978: 1975: 1972: 1969: 1966: 1963: 1960: 1957: 1954: 1951: 1948: 1945: 1942: 1939: 1936: 1933: 1930: 1927: 1874: 1871: 1870: 1869: 1864:is the set of 1852: 1848: 1844: 1830:is the set of 1818: 1804:is the set of 1792: 1780: 1769: 1766: 1763: 1760: 1757: 1754: 1751: 1748: 1745: 1742: 1739: 1736: 1733: 1730: 1727: 1724: 1721: 1718: 1715: 1712: 1702: 1691: 1688: 1685: 1682: 1679: 1676: 1673: 1670: 1667: 1664: 1661: 1658: 1655: 1652: 1649: 1646: 1643: 1640: 1637: 1634: 1622: 1619: 1607: 1604: 1601: 1598: 1595: 1592: 1589: 1586: 1583: 1580: 1577: 1574: 1571: 1568: 1538:is taken from 1521: 1518: 1515: 1512: 1484: 1481: 1478: 1475: 1451: 1448: 1445: 1410: 1407: 1404: 1401: 1396: 1392: 1388: 1385: 1327:set difference 1294: 1291: 1289: 1286: 1244: 1243: 1232: 1229: 1226: 1223: 1220: 1215: 1211: 1207: 1202: 1198: 1183: 1182: 1171: 1168: 1165: 1162: 1159: 1156: 1153: 1148: 1144: 1140: 1137: 1134: 1129: 1125: 1121: 1116: 1112: 1108: 1105: 1102: 1099: 1089: 1078: 1073: 1069: 1065: 1062: 1059: 1056: 1053: 1050: 1036: 1035: 1024: 1021: 1018: 1013: 1008: 1003: 999: 995: 976: 975: 974: 973: 970:contrapositive 955: 950: 946: 942: 937: 933: 924: 921: 918: 903: 892: 889: 886: 881: 877: 866: 855: 852: 849: 844: 840: 829: 818: 815: 812: 807: 803: 799: 796: 786: 775: 772: 769: 764: 760: 756: 753: 739: 738: 727: 722: 718: 714: 709: 705: 701: 696: 691: 687: 684: 681: 677: 665: 654: 649: 645: 641: 636: 632: 628: 623: 618: 614: 611: 608: 604: 569: 566: 565: 564: 545: 518: 505:is the set of 485: 482: 470: 467: 464: 456: 453: 448: 444: 424: 420: 417: 413: 408: 405: 381: 377: 350: 347: 344: 341: 338: 335: 332: 329: 326: 323: 320: 317: 314: 311: 308: 303: 299: 242: 239: 225: 222: 201: 198: 195: 192: 173:set difference 97: 93: 56: 49: 48: 40: 33: 32: 31: 30: 29: 26: 18:Complement set 9: 6: 4: 3: 2: 5925: 5914: 5911: 5909: 5906: 5905: 5903: 5890: 5889: 5884: 5876: 5870: 5867: 5865: 5862: 5860: 5857: 5855: 5852: 5848: 5845: 5844: 5843: 5840: 5838: 5835: 5833: 5830: 5828: 5824: 5821: 5819: 5816: 5814: 5811: 5809: 5806: 5804: 5801: 5800: 5798: 5794: 5788: 5785: 5783: 5780: 5778: 5777:Recursive set 5775: 5773: 5770: 5768: 5765: 5763: 5760: 5758: 5755: 5751: 5748: 5746: 5743: 5741: 5738: 5736: 5733: 5731: 5728: 5727: 5726: 5723: 5721: 5718: 5716: 5713: 5711: 5708: 5706: 5703: 5701: 5698: 5697: 5695: 5693: 5689: 5683: 5680: 5678: 5675: 5673: 5670: 5668: 5665: 5663: 5660: 5658: 5655: 5653: 5650: 5646: 5643: 5641: 5638: 5636: 5633: 5632: 5631: 5628: 5626: 5623: 5621: 5618: 5616: 5613: 5611: 5608: 5606: 5603: 5599: 5596: 5595: 5594: 5591: 5587: 5586:of arithmetic 5584: 5583: 5582: 5579: 5575: 5572: 5570: 5567: 5565: 5562: 5560: 5557: 5555: 5552: 5551: 5550: 5547: 5543: 5540: 5538: 5535: 5534: 5533: 5530: 5529: 5527: 5525: 5521: 5515: 5512: 5510: 5507: 5505: 5502: 5500: 5497: 5494: 5493:from ZFC 5490: 5487: 5485: 5482: 5476: 5473: 5472: 5471: 5468: 5466: 5463: 5461: 5458: 5457: 5456: 5453: 5451: 5448: 5446: 5443: 5441: 5438: 5436: 5433: 5431: 5428: 5426: 5423: 5422: 5420: 5418: 5414: 5404: 5403: 5399: 5398: 5393: 5392:non-Euclidean 5390: 5386: 5383: 5381: 5378: 5376: 5375: 5371: 5370: 5368: 5365: 5364: 5362: 5358: 5354: 5351: 5349: 5346: 5345: 5344: 5340: 5336: 5333: 5332: 5331: 5327: 5323: 5320: 5318: 5315: 5313: 5310: 5308: 5305: 5303: 5300: 5298: 5295: 5294: 5292: 5288: 5287: 5285: 5280: 5274: 5269:Example  5266: 5258: 5253: 5252: 5251: 5248: 5246: 5243: 5239: 5236: 5234: 5231: 5229: 5226: 5224: 5221: 5220: 5219: 5216: 5214: 5211: 5209: 5206: 5204: 5201: 5197: 5194: 5192: 5189: 5188: 5187: 5184: 5180: 5177: 5175: 5172: 5170: 5167: 5165: 5162: 5161: 5160: 5157: 5155: 5152: 5148: 5145: 5143: 5140: 5138: 5135: 5134: 5133: 5130: 5126: 5123: 5121: 5118: 5116: 5113: 5111: 5108: 5106: 5103: 5101: 5098: 5097: 5096: 5093: 5091: 5088: 5086: 5083: 5081: 5078: 5074: 5071: 5069: 5066: 5064: 5061: 5059: 5056: 5055: 5054: 5051: 5049: 5046: 5044: 5041: 5039: 5036: 5032: 5029: 5027: 5026:by definition 5024: 5023: 5022: 5019: 5015: 5012: 5011: 5010: 5007: 5005: 5002: 5000: 4997: 4995: 4992: 4990: 4987: 4986: 4983: 4980: 4978: 4974: 4969: 4963: 4959: 4949: 4946: 4944: 4941: 4939: 4936: 4934: 4931: 4929: 4926: 4924: 4921: 4919: 4916: 4914: 4913:Kripke–Platek 4911: 4909: 4906: 4902: 4899: 4897: 4894: 4893: 4892: 4889: 4888: 4886: 4882: 4874: 4871: 4870: 4869: 4866: 4864: 4861: 4857: 4854: 4853: 4852: 4849: 4847: 4844: 4842: 4839: 4837: 4834: 4832: 4829: 4826: 4822: 4818: 4815: 4811: 4808: 4806: 4803: 4801: 4798: 4797: 4796: 4792: 4789: 4788: 4786: 4784: 4780: 4776: 4768: 4765: 4763: 4760: 4758: 4757:constructible 4755: 4754: 4753: 4750: 4748: 4745: 4743: 4740: 4738: 4735: 4733: 4730: 4728: 4725: 4723: 4720: 4718: 4715: 4713: 4710: 4708: 4705: 4703: 4700: 4698: 4695: 4693: 4690: 4689: 4687: 4685: 4680: 4672: 4669: 4667: 4664: 4662: 4659: 4657: 4654: 4652: 4649: 4647: 4644: 4643: 4641: 4637: 4634: 4632: 4629: 4628: 4627: 4624: 4622: 4619: 4617: 4614: 4612: 4609: 4607: 4603: 4599: 4597: 4594: 4590: 4587: 4586: 4585: 4582: 4581: 4578: 4575: 4573: 4569: 4559: 4556: 4554: 4551: 4549: 4546: 4544: 4541: 4539: 4536: 4534: 4531: 4527: 4524: 4523: 4522: 4519: 4515: 4510: 4509: 4508: 4505: 4504: 4502: 4500: 4496: 4488: 4485: 4483: 4480: 4478: 4475: 4474: 4473: 4470: 4468: 4465: 4463: 4460: 4458: 4455: 4453: 4450: 4448: 4445: 4443: 4440: 4439: 4437: 4435: 4434:Propositional 4431: 4425: 4422: 4420: 4417: 4415: 4412: 4410: 4407: 4405: 4402: 4400: 4397: 4393: 4390: 4389: 4388: 4385: 4383: 4380: 4378: 4375: 4373: 4370: 4368: 4365: 4363: 4362:Logical truth 4360: 4358: 4355: 4354: 4352: 4350: 4346: 4343: 4341: 4337: 4331: 4328: 4326: 4323: 4321: 4318: 4316: 4313: 4311: 4308: 4306: 4302: 4298: 4294: 4292: 4289: 4287: 4284: 4282: 4278: 4275: 4274: 4272: 4270: 4264: 4259: 4253: 4250: 4248: 4245: 4243: 4240: 4238: 4235: 4233: 4230: 4228: 4225: 4223: 4220: 4218: 4215: 4213: 4210: 4208: 4205: 4203: 4200: 4198: 4195: 4191: 4188: 4187: 4186: 4183: 4182: 4180: 4176: 4172: 4165: 4160: 4158: 4153: 4151: 4146: 4145: 4142: 4130: 4129:Ernst Zermelo 4127: 4125: 4122: 4120: 4117: 4115: 4114:Willard Quine 4112: 4110: 4107: 4105: 4102: 4100: 4097: 4095: 4092: 4090: 4087: 4085: 4082: 4080: 4077: 4075: 4072: 4071: 4069: 4067: 4066:Set theorists 4063: 4057: 4054: 4052: 4049: 4047: 4044: 4043: 4041: 4035: 4033: 4030: 4029: 4026: 4018: 4015: 4013: 4012:Kripke–Platek 4010: 4006: 4003: 4002: 4001: 3998: 3997: 3996: 3993: 3989: 3986: 3985: 3984: 3983: 3979: 3975: 3972: 3971: 3970: 3967: 3966: 3963: 3960: 3958: 3955: 3953: 3950: 3948: 3945: 3944: 3942: 3938: 3932: 3929: 3927: 3924: 3922: 3919: 3917: 3915: 3910: 3908: 3905: 3903: 3900: 3897: 3893: 3890: 3888: 3885: 3881: 3878: 3876: 3873: 3871: 3868: 3867: 3866: 3863: 3860: 3856: 3853: 3851: 3848: 3846: 3843: 3841: 3838: 3837: 3835: 3832: 3828: 3822: 3819: 3817: 3814: 3812: 3809: 3807: 3804: 3802: 3799: 3797: 3794: 3792: 3789: 3785: 3782: 3780: 3777: 3776: 3775: 3772: 3770: 3767: 3765: 3762: 3760: 3757: 3755: 3752: 3749: 3745: 3742: 3740: 3737: 3735: 3732: 3731: 3729: 3723: 3720: 3719: 3716: 3710: 3707: 3705: 3702: 3700: 3697: 3695: 3692: 3690: 3687: 3685: 3682: 3680: 3677: 3674: 3671: 3669: 3666: 3665: 3663: 3661: 3657: 3649: 3648:specification 3646: 3644: 3641: 3640: 3639: 3636: 3635: 3632: 3629: 3627: 3624: 3622: 3619: 3617: 3614: 3612: 3609: 3607: 3604: 3602: 3599: 3597: 3594: 3592: 3589: 3587: 3584: 3580: 3577: 3575: 3572: 3570: 3567: 3566: 3565: 3562: 3560: 3557: 3556: 3554: 3552: 3548: 3543: 3533: 3530: 3529: 3527: 3523: 3519: 3512: 3507: 3505: 3500: 3498: 3493: 3492: 3489: 3480: 3479: 3474: 3471: 3466: 3461: 3460: 3455: 3452: 3447: 3446: 3436: 3432: 3428: 3426:9780442030643 3422: 3417: 3416: 3410: 3406: 3402: 3398: 3394: 3392:0-387-90441-7 3388: 3384: 3380: 3376: 3372: 3368: 3362: 3358: 3354: 3350: 3349: 3337: 3333: 3330: 3326: 3319: 3314: 3308:, p. 17. 3307: 3302: 3300: 3298: 3290: 3289:Bourbaki 1970 3285: 3276: 3262: 3258: 3252: 3250: 3235: 3231: 3225: 3221: 3210: 3207: 3204: 3201: 3198: 3195: 3192: 3189: 3186: 3183: 3180: 3177: 3176: 3170: 3139: 3119: 3095: 3087: 3081: 3071: 3069: 3065: 3061: 3057: 3053: 3048: 3034: 3014: 3011: 2991: 2988: 2968: 2965: 2962: 2955:The truth of 2942: 2939: 2919: 2916: 2908: 2892: 2872: 2869: 2860: 2857: 2854: 2845: 2833: 2810: 2790: 2787: 2784: 2781: 2761: 2735: 2725: 2709: 2706: 2703: 2700: 2693: 2677: 2670: 2643: 2637: 2634: 2631: 2611: 2605: 2602: 2599: 2592: 2577: 2571: 2568: 2565: 2559: 2539: 2536: 2533: 2525: 2511: 2505: 2502: 2496: 2489: 2475: 2472: 2469: 2460: 2453: 2439: 2433: 2430: 2417: 2403: 2397: 2394: 2388: 2381: 2367: 2361: 2355: 2343: 2340: 2337: 2331: 2328: 2325: 2319: 2313: 2303: 2289: 2283: 2277: 2271: 2268: 2265: 2262: 2253: 2250: 2247: 2241: 2238: 2235: 2229: 2223: 2213: 2193: 2190: 2187: 2181: 2175: 2169: 2160: 2152: 2151: 2138: 2132: 2126: 2120: 2114: 2111: 2108: 2102: 2096: 2090: 2081: 2074: 2060: 2054: 2048: 2042: 2036: 2030: 2024: 2018: 2015: 2012: 2003: 1996: 1982: 1976: 1970: 1964: 1958: 1952: 1946: 1940: 1937: 1934: 1925: 1918: 1917: 1916: 1915: 1914: 1912: 1903: 1897: 1891: 1884: 1880: 1867: 1833: 1807: 1781: 1767: 1761: 1755: 1749: 1746: 1743: 1740: 1737: 1725: 1722: 1719: 1716: 1713: 1703: 1689: 1683: 1677: 1671: 1668: 1665: 1662: 1659: 1647: 1644: 1641: 1638: 1635: 1625: 1624: 1618: 1605: 1599: 1596: 1593: 1590: 1587: 1584: 1581: 1575: 1572: 1566: 1557: 1554: 1548: 1542: 1536: 1519: 1516: 1513: 1510: 1502: 1498: 1482: 1479: 1476: 1473: 1465: 1449: 1443: 1434: 1428: 1408: 1402: 1399: 1394: 1390: 1386: 1383: 1374: 1368: 1363: 1358: 1354: 1351: 1345: 1339: 1333: 1328: 1323: 1317: 1312: 1307: 1301: 1285: 1282: 1277: 1271: 1267: 1260: 1255: 1254:proper subset 1250: 1230: 1227: 1221: 1218: 1213: 1209: 1200: 1196: 1188: 1187: 1186: 1169: 1163: 1160: 1157: 1151: 1146: 1142: 1138: 1135: 1132: 1127: 1123: 1119: 1114: 1106: 1100: 1090: 1076: 1071: 1067: 1063: 1060: 1057: 1054: 1048: 1041: 1040: 1039: 1022: 1019: 1016: 1011: 1006: 1001: 997: 993: 984: 983: 982: 980: 971: 967: 966: 953: 948: 944: 940: 935: 931: 922: 919: 916: 904: 890: 884: 879: 875: 867: 853: 850: 847: 842: 830: 816: 810: 805: 801: 797: 794: 787: 773: 770: 767: 762: 758: 754: 751: 744: 743: 742: 725: 720: 716: 712: 707: 703: 699: 694: 689: 685: 682: 679: 675: 666: 652: 647: 643: 639: 634: 630: 626: 621: 616: 612: 609: 606: 602: 593: 592: 591: 589: 585: 562: 561:universal set 558: 554: 550: 546: 535: 524:. If the set 523: 519: 516: 508: 492: 488: 487: 481: 468: 465: 462: 454: 451: 446: 442: 422: 418: 415: 411: 403: 379: 375: 361: 348: 342: 339: 336: 333: 330: 327: 324: 318: 315: 309: 306: 301: 297: 260: 252: 235: 230: 221: 199: 196: 190: 174: 162: 157: 143: 135: 131: 126: 120: 114: 95: 91: 79: 75: 71: 53: 37: 19: 5879: 5677:Ultraproduct 5524:Model theory 5489:Independence 5425:Formal proof 5417:Proof theory 5400: 5373: 5330:real numbers 5302:second-order 5213:Substitution 5090:Metalanguage 5031:conservative 5004:Axiom schema 4948:Constructive 4918:Morse–Kelley 4884:Set theories 4863:Aleph number 4856:inaccessible 4762:Grothendieck 4655: 4646:intersection 4533:Higher-order 4521:Second-order 4467:Truth tables 4424:Venn diagram 4207:Formal proof 4079:Georg Cantor 4074:Paul Bernays 4005:Morse–Kelley 3980: 3913: 3912:Subset  3859:hereditarily 3821:Venn diagram 3779:ordered pair 3694:Intersection 3672: 3638:Axiom schema 3476: 3457: 3454:"Complement" 3414: 3378: 3356: 3353:Bourbaki, N. 3325: 3320:, p. 6. 3313: 3284: 3275: 3264:. Retrieved 3260: 3237:. Retrieved 3233: 3224: 3108:. A variant 3083: 3049: 2723: 2666: 1901: 1895: 1889: 1886: 1806:real numbers 1558: 1552: 1546: 1540: 1534: 1432: 1426: 1423: 1372: 1366: 1361: 1349: 1343: 1337: 1331: 1326: 1321: 1315: 1310: 1305: 1299: 1296: 1280: 1269: 1265: 1258: 1248: 1245: 1184: 1037: 977: 927:, then  740: 586: 571: 557:proper class 362: 258: 250: 244: 233: 172: 160: 158: 141: 127: 112: 73: 67: 5787:Type theory 5735:undecidable 5667:Truth value 5554:equivalence 5233:non-logical 4846:Enumeration 4836:Isomorphism 4783:cardinality 4767:Von Neumann 4732:Ultrafilter 4697:Uncountable 4631:equivalence 4548:Quantifiers 4538:Fixed-point 4507:First-order 4387:Consistency 4372:Proposition 4349:Traditional 4320:Lindström's 4310:Compactness 4252:Type theory 4197:Cardinality 4104:Thomas Jech 3947:Alternative 3926:Uncountable 3880:Ultrafilter 3739:Cardinality 3643:replacement 3591:Determinacy 3318:Devlin 1979 3306:Halmos 1960 3154:\complement 1436:is denoted 1347:but not in 5902:Categories 5598:elementary 5291:arithmetic 5159:Quantifier 5137:functional 5009:Expression 4727:Transitive 4671:identities 4656:complement 4589:hereditary 4572:Set theory 4099:Kurt Gödel 4084:Paul Cohen 3921:Transitive 3689:Identities 3673:Complement 3660:Operations 3621:Regularity 3559:Adjunction 3518:Set theory 3435:0087.04403 3401:0407.04003 3346:References 3266:2020-09-04 3239:2020-09-04 3167:COMPLEMENT 3102:\backslash 3078:See also: 3064:operations 1911:identities 1877:See also: 1873:Properties 1559:Formally: 1293:Definition 979:Involution 568:Properties 553:set theory 259:complement 241:Definition 183:, written 74:complement 70:set theory 5869:Supertask 5772:Recursion 5730:decidable 5564:saturated 5542:of models 5465:deductive 5460:axiomatic 5380:Hilbert's 5367:Euclidean 5348:canonical 5271:axiomatic 5203:Signature 5132:Predicate 5021:Extension 4943:Ackermann 4868:Operation 4747:Universal 4737:Recursive 4712:Singleton 4707:Inhabited 4692:Countable 4682:Types of 4666:power set 4636:partition 4553:Predicate 4499:Predicate 4414:Syllogism 4404:Soundness 4377:Inference 4367:Tautology 4269:paradoxes 4032:Paradoxes 3952:Axiomatic 3931:Universal 3907:Singleton 3902:Recursive 3845:Countable 3840:Amorphous 3699:Power set 3616:Power set 3574:dependent 3569:countable 3478:MathWorld 3459:MathWorld 3120:∁ 3098:\setminus 3094:backslash 3090:\setminus 2867:∖ 2858:× 2837:¯ 2785:× 2739:¯ 2704:× 2641:∖ 2635:⊇ 2609:∖ 2603:⊇ 2575:∖ 2569:⊃ 2563:∖ 2537:⊂ 2509:∅ 2500:∖ 2467:∅ 2464:∖ 2437:∅ 2428:∖ 2425:∅ 2401:∅ 2392:∖ 2359:∖ 2350:∖ 2341:∪ 2326:∪ 2317:∖ 2281:∖ 2272:∩ 2260:∖ 2251:∩ 2236:∩ 2227:∖ 2191:∩ 2173:∖ 2164:∖ 2130:∖ 2121:∪ 2112:∩ 2094:∖ 2085:∖ 2052:∖ 2043:∩ 2034:∖ 2016:∪ 2007:∖ 1974:∖ 1965:∪ 1956:∖ 1938:∩ 1929:∖ 1847:∖ 1732:∖ 1654:∖ 1597:∉ 1585:∈ 1570:∖ 1514:− 1477:− 1447:∖ 1406:∖ 1395:∁ 1387:∩ 1276:partition 1225:∖ 1214:∁ 1206:∖ 1201:∁ 1161:∩ 1152:∪ 1147:∁ 1133:∪ 1128:∁ 1115:∁ 1104:∖ 1072:∁ 1064:∩ 1052:∖ 1012:∁ 1002:∁ 949:∁ 941:⊆ 936:∁ 920:⊆ 888:∅ 880:∁ 843:∁ 839:∅ 814:∅ 806:∁ 798:∩ 763:∁ 755:∪ 721:∁ 713:∪ 708:∁ 695:∁ 683:∩ 648:∁ 640:∩ 635:∁ 622:∁ 610:∪ 515:congruent 507:multiples 463:∁ 443:∁ 407:¯ 380:∁ 340:∉ 328:∈ 313:∖ 302:∁ 194:∖ 96:∁ 5854:Logicism 5847:timeline 5823:Concrete 5682:Validity 5652:T-schema 5645:Kripke's 5640:Tarski's 5635:semantic 5625:Strength 5574:submodel 5569:spectrum 5537:function 5385:Tarski's 5374:Elements 5361:geometry 5317:Robinson 5238:variable 5223:function 5196:spectrum 5186:Sentence 5142:variable 5085:Language 5038:Relation 4999:Automata 4989:Alphabet 4973:language 4827:-jection 4805:codomain 4791:Function 4752:Universe 4722:Infinite 4626:Relation 4409:Validity 4399:Argument 4297:theorem, 4036:Problems 3940:Theories 3916:Superset 3892:Infinite 3721:Concepts 3601:Infinity 3525:Overview 3411:(1960). 3383:Springer 3377:(1979). 3355:(1970). 3332:Archived 3173:See also 3164:∁ 1621:Examples 913:If  491:integers 484:Examples 419:′ 130:universe 119:elements 5796:Related 5593:Diagram 5491: ( 5470:Hilbert 5455:Systems 5450:Theorem 5328:of the 5273:systems 5053:Formula 5048:Grammar 4964: ( 4908:General 4621:Forcing 4606:Element 4526:Monadic 4301:paradox 4242:Theorem 4178:General 3974:General 3969:Zermelo 3875:subbase 3857: ( 3796:Forcing 3774:Element 3746: ( 3724:Methods 3611:Pairing 3084:In the 3066:of the 3004:column 2552:, then 1834:, then 1262:, then 532:is the 134:members 121:not in 5559:finite 5322:Skolem 5275:  5250:Theory 5218:Symbol 5208:String 5191:atomic 5068:ground 5063:closed 5058:atomic 5014:ground 4977:syntax 4873:binary 4800:domain 4717:Finite 4482:finite 4340:Logics 4299:  4247:Theory 3865:Filter 3855:Finite 3791:Family 3734:Almost 3579:global 3564:Choice 3551:Axioms 3433:  3423:  3399:  3389:  3363:  3161: 3159:U+2201 2885:Here, 2849:  2843:  1899:, and 1532:where 140:, the 72:, the 5549:Model 5297:Peano 5154:Proof 4994:Arity 4923:Naive 4810:image 4742:Fuzzy 4702:Empty 4651:union 4596:Class 4237:Model 4227:Lemma 4185:Axiom 3957:Naive 3887:Fuzzy 3850:Empty 3833:types 3784:tuple 3754:Class 3748:large 3709:Union 3626:Union 3216:Notes 3086:LaTeX 1550:from 1274:is a 534:union 493:. If 76:of a 5672:Type 5475:list 5279:list 5256:list 5245:Term 5179:rank 5073:open 4967:list 4779:Maps 4684:sets 4543:Free 4513:list 4263:list 4190:list 3870:base 3421:ISBN 3387:ISBN 3361:ISBN 3054:and 2722:The 1887:Let 1881:and 1808:and 1544:and 1360:The 1335:and 1303:and 576:and 572:Let 232:The 179:and 159:The 110:(or 5359:of 5341:of 5289:of 4821:Sur 4795:Map 4602:Ur- 4584:Set 3831:Set 3431:Zbl 3397:Zbl 3169:.) 2774:in 2526:If 1782:If 1499:in 1430:in 1370:in 1364:of 1329:of 1319:in 1313:of 1297:If 1278:of 1256:of 285:in 261:of 253:of 245:If 175:of 163:of 144:of 78:set 68:In 41:If 5904:: 5745:NP 5369:: 5363:: 5293:: 4970:), 4825:Bi 4817:In 3475:. 3456:. 3429:. 3395:. 3385:. 3296:^ 3259:. 3248:^ 3232:. 3070:. 2667:A 1893:, 1556:. 1376:: 1353:. 1284:. 1268:, 972:). 590:: 289:: 220:. 156:. 125:. 5825:/ 5740:P 5495:) 5281:) 5277:( 5174:∀ 5169:! 5164:∃ 5125:= 5120:↔ 5115:→ 5110:∧ 5105:√ 5100:ÂŹ 4823:/ 4819:/ 4793:/ 4604:) 4600:( 4487:∞ 4477:3 4265:) 4163:e 4156:t 4149:v 3914:· 3898:) 3894:( 3861:) 3750:) 3510:e 3503:t 3496:v 3481:. 3462:. 3437:. 3403:. 3369:. 3269:. 3242:. 3140:C 3035:R 3015:. 3012:b 2992:, 2989:a 2969:b 2966:R 2963:a 2943:. 2940:Y 2920:, 2917:X 2893:R 2873:. 2870:R 2864:) 2861:Y 2855:X 2852:( 2846:= 2834:R 2811:R 2791:. 2788:Y 2782:X 2762:R 2736:R 2710:. 2707:Y 2701:X 2678:R 2656:. 2644:A 2638:B 2632:C 2612:C 2606:B 2600:A 2590:. 2578:B 2572:C 2566:A 2560:C 2540:B 2534:A 2512:. 2506:= 2503:U 2497:A 2476:. 2473:A 2470:= 2461:A 2440:. 2434:= 2431:A 2404:. 2398:= 2395:A 2389:A 2368:. 2365:) 2362:C 2356:A 2353:( 2347:) 2344:C 2338:B 2335:( 2332:= 2329:C 2323:) 2320:A 2314:B 2311:( 2290:. 2287:) 2284:A 2278:C 2275:( 2269:B 2266:= 2263:A 2257:) 2254:C 2248:B 2245:( 2242:= 2239:C 2233:) 2230:A 2224:B 2221:( 2197:) 2194:A 2188:C 2185:( 2182:= 2179:) 2176:A 2170:C 2167:( 2161:C 2139:, 2136:) 2133:B 2127:C 2124:( 2118:) 2115:A 2109:C 2106:( 2103:= 2100:) 2097:A 2091:B 2088:( 2082:C 2061:. 2058:) 2055:B 2049:C 2046:( 2040:) 2037:A 2031:C 2028:( 2025:= 2022:) 2019:B 2013:A 2010:( 2004:C 1983:. 1980:) 1977:B 1971:C 1968:( 1962:) 1959:A 1953:C 1950:( 1947:= 1944:) 1941:B 1935:A 1932:( 1926:C 1907:U 1902:C 1896:B 1890:A 1868:. 1851:Q 1843:R 1817:Q 1791:R 1768:. 1765:} 1762:4 1759:{ 1756:= 1753:} 1750:3 1747:, 1744:2 1741:, 1738:1 1735:{ 1729:} 1726:4 1723:, 1720:3 1717:, 1714:2 1711:{ 1690:. 1687:} 1684:1 1681:{ 1678:= 1675:} 1672:4 1669:, 1666:3 1663:, 1660:2 1657:{ 1651:} 1648:3 1645:, 1642:2 1639:, 1636:1 1633:{ 1606:. 1603:} 1600:A 1594:x 1591:: 1588:B 1582:x 1579:{ 1576:= 1573:A 1567:B 1553:A 1547:a 1541:B 1535:b 1520:, 1517:a 1511:b 1483:, 1480:A 1474:B 1450:A 1444:B 1433:B 1427:A 1409:A 1403:B 1400:= 1391:A 1384:B 1373:B 1367:A 1350:A 1344:B 1338:A 1332:B 1322:B 1316:A 1306:B 1300:A 1281:U 1272:} 1270:A 1266:A 1264:{ 1259:U 1249:A 1231:. 1228:A 1222:B 1219:= 1210:B 1197:A 1170:. 1167:) 1164:A 1158:B 1155:( 1143:A 1139:= 1136:B 1124:A 1120:= 1111:) 1107:B 1101:A 1098:( 1077:. 1068:B 1061:A 1058:= 1055:B 1049:A 1023:. 1020:A 1017:= 1007:) 998:A 994:( 954:. 945:A 932:B 923:B 917:A 891:. 885:= 876:U 854:. 851:U 848:= 817:. 811:= 802:A 795:A 774:. 771:U 768:= 759:A 752:A 726:. 717:B 704:A 700:= 690:) 686:B 680:A 676:( 653:. 644:B 631:A 627:= 617:) 613:B 607:A 603:( 582:U 578:B 574:A 563:. 542:B 538:B 530:A 526:A 511:B 503:B 499:A 495:A 469:. 466:A 455:, 452:A 447:U 423:, 416:A 412:, 404:A 376:A 365:A 349:. 346:} 343:A 337:x 334:: 331:U 325:x 322:{ 319:= 316:A 310:U 307:= 298:A 287:U 283:A 279:A 275:U 271:U 267:A 263:A 255:A 247:A 218:A 214:B 200:, 197:A 191:B 181:A 177:B 169:B 165:A 154:A 150:U 146:A 138:U 123:A 115:â€Č 113:A 92:A 81:A 59:A 43:A 20:)

Index

Complement set
A circle filled with red inside a square. The area outside the circle is unfilled. The borders of both the circle and the square are black.
An unfilled circle inside a square. The area inside the square not covered by the circle is filled with red. The borders of both the circle and the square are black.
set theory
set
elements
universe
members

integers
multiples
congruent
standard 52-card deck
union
universe of sets
set theory
proper class
universal set
De Morgan's laws
contrapositive
Involution
proper subset
partition

ISO 31-11 standard
Minkowski set operations
functional analysis
real numbers
rational numbers
irrational numbers

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