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2115: 2103: 6390: 5412: 5482: 883: 49: 1904: 3639: 6379: 3167: 3070: 3001: 531: 318: 2364: 2594: 2402: 470: 2288: 2321: 2248: 2185: 2816: 809: 2025: 1966: 1848: 1395: 1369: 1336: 1310: 1284: 1250: 964: 864: 758: 674: 560: 387: 3234: 2693: 2620: 1999: 1940: 1626: 1163: 1137: 1104: 1078: 1052: 1019: 935: 909: 631: 346: 261: 126: 92: 3343: 1885: 1603: 1528: 1495: 2211: 1646: 1472: 1819: 1742: 1666: 1575: 1555: 1444: 1424: 3302: 2516: 2490: 1779: 2724: 2647: 2450: 1713: 1690: 2897: 841: 1189: 2917: 2860: 2840: 2775: 2755: 2148: 1224: 993: 3272: 2073:(the concept that corresponds to size, that is, the number of elements, of a finite set) as the whole; such cases can run counter to one's initial intuition. 3791: 6108: 3548: 5946: 4466: 2114: 4549: 3690: 3103: 3026: 2957: 479: 266: 2326: 4863: 2521: 6413: 5021: 3525: 3493: 3468: 3443: 3809: 6101: 5635: 5448: 4876: 4199: 2102: 5963: 4881: 4871: 4608: 4461: 3814: 3805: 2371: 5017: 3621: 4359: 5114: 4858: 3683: 425: 6094: 5941: 5535: 4419: 4112: 5821: 3853: 5375: 5077: 4840: 4835: 4660: 4081: 3765: 2253: 2069:. These are two examples in which both the subset and the whole set are infinite, and the subset has the same 5715: 5594: 5370: 5153: 5070: 4783: 4714: 4591: 3833: 5958: 5295: 5121: 4807: 4441: 4040: 5951: 5589: 5552: 5173: 5168: 4778: 4517: 4446: 3775: 3676: 3194: 3178: 3557: 6273: 6268: 5102: 4692: 4086: 4054: 3745: 3390: 2293: 2220: 2157: 42: 5606: 2780: 5640: 5525: 5513: 5508: 5392: 5341: 5238: 4736: 4697: 4174: 3819: 3186: 31: 3848: 785: 6257: 5441: 5233: 5163: 4702: 4554: 4537: 4260: 3740: 3643: 3435: 2004: 1945: 1824: 1669: 1374: 1348: 1315: 1289: 1263: 1229: 940: 846: 737: 650: 536: 419: 363: 17: 3408: – Subset T of a topological vector space X where the linear span of T is a dense subset of X 3207: 2656: 2599: 1978: 1919: 1608: 1142: 1116: 1083: 1057: 1031: 998: 914: 888: 610: 325: 240: 105: 71: 6060: 5978: 5853: 5805: 5619: 5542: 5065: 5042: 5003: 4889: 4830: 4476: 4396: 4240: 4184: 3797: 3307: 1861: 1588: 1504: 1477: 3366: – Partial order that arises as the subset-inclusion relation on some collection of objects 2196: 1631: 1457: 6012: 5893: 5705: 5518: 5355: 5082: 5060: 5027: 4920: 4766: 4751: 4724: 4675: 4559: 4494: 4319: 4285: 4280: 4154: 3985: 3962: 3396: 1109: 1804: 1718: 1651: 1560: 1540: 1429: 1409: 6362: 6358: 6118: 5928: 5898: 5842: 5762: 5742: 5720: 5285: 5138: 4930: 4648: 4384: 4290: 4149: 4134: 4015: 3990: 3281: 2819: 2495: 2463: 1755: 579: 148: 3427: 6205: 6193: 6002: 5992: 5826: 5757: 5710: 5650: 5530: 5258: 5220: 5097: 4901: 4741: 4665: 4643: 4471: 4429: 4328: 4295: 4159: 3947: 3858: 3535: 3375: 2702: 2625: 2419: 2084:. In this example, both sets are infinite, but the latter set has a larger cardinality (or 1798: 1695: 1675: 2869: 823: 8: 6350: 6159: 6147: 5997: 5908: 5816: 5811: 5625: 5567: 5498: 5434: 5387: 5278: 5263: 5243: 5200: 5087: 5037: 4963: 4908: 4845: 4638: 4633: 4581: 4349: 4338: 4010: 3910: 3838: 3829: 3825: 3760: 3755: 3428: 1341: 1256: 1168: 1024: 6394: 6322: 6318: 6201: 5920: 5915: 5700: 5655: 5562: 5416: 5185: 5148: 5133: 5126: 5109: 4913: 4895: 4761: 4687: 4670: 4623: 4436: 4345: 4179: 4164: 4124: 4076: 4061: 4049: 4005: 3980: 3750: 3699: 3384: 3190: 2920: 2902: 2845: 2825: 2760: 2740: 2133: 2070: 2066: 1531: 1209: 1202: 978: 971: 38: 4369: 3251: 6389: 6383: 6293: 5777: 5614: 5577: 5547: 5471: 5411: 5351: 5158: 4968: 4958: 4850: 4731: 4566: 4542: 4323: 4307: 4212: 4189: 4066: 4035: 4000: 3895: 3730: 3651: 3617: 3521: 3489: 3464: 3439: 2413: 2409: 133: 3357: – In geometry, set whose intersection with every line is a single line segment 1585:
superset respectively; that is, with the same meaning as and instead of the symbols
6336: 6332: 6065: 6055: 6040: 6035: 5903: 5557: 5365: 5360: 5253: 5210: 5032: 4993: 4988: 4973: 4799: 4756: 4653: 4451: 4401: 3975: 3937: 5934: 5872: 5690: 5503: 5346: 5336: 5290: 5273: 5228: 5190: 5092: 5012: 4819: 4746: 4719: 4707: 4613: 4527: 4501: 4456: 4424: 4225: 4027: 3970: 3920: 3885: 3843: 3531: 3363: 2923: 2191: 2077: 2058: 1908: 6346: 6244: 6240: 6232: 6218: 6189: 6133: 6070: 5867: 5848: 5752: 5737: 5694: 5630: 5572: 5331: 5310: 5268: 5248: 5143: 4998: 4596: 4586: 4576: 4571: 4505: 4379: 4255: 4144: 4139: 4117: 3718: 3241: 2947: 2727: 2054: 1916:
The set A = {1, 2} is a proper subset of B = {1, 2, 3}, thus both expressions
6407: 6310: 6305: 6075: 5877: 5791: 5786: 5305: 4983: 4490: 4275: 4265: 4235: 4220: 3890: 3354: 3201: 3182: 3174: 2214: 2093: 867: 52: 6045: 3654: 3581: 6288: 6284: 6155: 6025: 6020: 5838: 5767: 5725: 5584: 5481: 5205: 5052: 4953: 4945: 4825: 4773: 4682: 4618: 4601: 4532: 4391: 4250: 3952: 3735: 3509: 3405: 2062: 2039: 1454:
respectively; that is, with the same meaning as and instead of the symbols
702: 694: 6086: 6050: 5685: 5315: 5195: 4374: 4364: 4311: 3995: 3915: 3900: 3780: 3725: 3609: 3517: 3093: 2453: 2081: 882: 6228: 6030: 5801: 5457: 4245: 4100: 4071: 3877: 3237: 2863: 6143: 5833: 5796: 5747: 5645: 5397: 5300: 4353: 4270: 4230: 4194: 4130: 3942: 3932: 3905: 3668: 3659: 3369: 2151: 817: 6252: 6181: 6167: 5382: 5180: 4628: 4333: 3927: 3162:{\displaystyle A\subseteq B{\text{ if and only if }}|A\cap B|=|A|.} 191:. The relationship of one set being a subset of another is called 48: 6301: 4978: 3770: 3096:
of their intersection is equal to the cardinality of A. Formally:
1903: 5680: 3638: 3065:{\displaystyle A\subseteq B{\text{ if and only if }}A\cup B=B.} 2996:{\displaystyle A\subseteq B{\text{ if and only if }}A\cap B=A.} 526:{\displaystyle \forall x\left(x\in A\Rightarrow x\in B\right),} 418:
The validity of this technique can be seen as a consequence of
313:{\displaystyle \forall x\left(x\in A\Rightarrow x\in B\right).} 3393: – System of elements that are subordinated to each other 6177: 5730: 5490: 5426: 4522: 3868: 3713: 2359:{\displaystyle A\leq B{\text{ if and only if }}B\subseteq A.} 348:
by applying a proof technique known as the element argument:
2589:{\displaystyle S=\left\{s_{1},s_{2},\ldots ,s_{k}\right\},} 1497:
For example, for these authors, it is true of every set
3401:
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to some collection of sets ordered by inclusion. The
3210: 3106: 3029: 2960: 2905: 2872: 2848: 2828: 2783: 2763: 2743: 2705: 2659: 2628: 2602: 2524: 2498: 2466: 2422: 2374: 2329: 2296: 2256: 2223: 2199: 2160: 2136: 2007: 1981: 1948: 1922: 1864: 1827: 1807: 1758: 1721: 1698: 1678: 1654: 1634: 1611: 1591: 1563: 1543: 1507: 1480: 1460: 1432: 1412: 1377: 1351: 1318: 1292: 1266: 1232: 1212: 1171: 1145: 1119: 1086: 1060: 1034: 1001: 981: 943: 917: 891: 849: 826: 788: 740: 705:
at least one element of B which is not an element of
653: 613: 539: 482: 428: 366: 328: 269: 243: 108: 74: 3378: – Connected open subset of a topological space 3177:
on sets. In fact, the subsets of a given set form a
3019:
if and only if their union is equal to B. Formally:
399:
is a particular but arbitrarily chosen element of A
3399: – Mathematical set with some added structure 3337: 3296: 3266: 3228: 3161: 3064: 2995: 2911: 2891: 2854: 2834: 2810: 2769: 2749: 2718: 2687: 2641: 2614: 2588: 2510: 2484: 2444: 2396: 2358: 2315: 2282: 2242: 2205: 2179: 2142: 2019: 1993: 1960: 1934: 1879: 1842: 1813: 1773: 1736: 1707: 1684: 1660: 1640: 1620: 1597: 1569: 1549: 1522: 1489: 1466: 1438: 1418: 1389: 1363: 1330: 1304: 1278: 1244: 1218: 1183: 1157: 1131: 1098: 1072: 1046: 1013: 987: 958: 929: 903: 858: 835: 803: 752: 668: 625: 554: 525: 464: 381: 340: 312: 255: 120: 86: 6405: 3204:, in the sense that every partially ordered set 2929: 2397:{\displaystyle \operatorname {\mathcal {P}} (S)} 3649: 3434:(7th ed.). New York: McGraw-Hill. p.  3372: – Study of parts and the wholes they form 30:"Superset" redirects here. For other uses, see 37:"⊃" redirects here. For the logic symbol, see 6102: 5442: 3684: 2801: 2788: 2065:is a proper subset of the set of points in a 3608: 3387: – Decision problem in computer science 2673: 2660: 2479: 2467: 830: 827: 465:{\displaystyle (c\in A)\Rightarrow (c\in B)} 27:Set whose elements all belong to another set 2950:their intersection is equal to A. Formally: 2120:C is a subset but not a proper subset of B. 6116: 6109: 6095: 5449: 5435: 3876: 3691: 3677: 2408:, the inclusion partial order is—up to an 2270: 2266: 3488:. San Francisco, CA: Dover Publications. 3430:Discrete Mathematics and Its Applications 3193:, and the subset relation itself is the 3181:under the subset relation, in which the 2283:{\displaystyle A\leq B\iff A\subseteq B} 2042:greater than 10} is a proper subset of { 1975:a proper subset) of E = {1, 2, 3}, thus 1902: 1801:). Similarly, using the convention that 1537:Other authors prefer to use the symbols 881: 476:. Universal generalisation then implies 47: 2518:This can be illustrated by enumerating 1971:The set D = {1, 2, 3} is a subset (but 179:to be equal; if they are unequal, then 14: 6406: 3698: 3461:Discrete Mathematics with Applications 3274:of all ordinals less than or equal to 3244:are a simple example: if each ordinal 1898: 6090: 5430: 3672: 3650: 3579: 3508: 3425: 2323:by reverse set inclusion by defining 2818:, in analogue with the notation for 3458: 2596:, and associating with each subset 2061:; likewise, the set of points in a 877: 24: 2792: 2699:th coordinate is 1 if and only if 2377: 2299: 2226: 2163: 1401: 866:has no elements, and therefore is 483: 472:for an arbitrarily chosen element 270: 25: 6425: 3631: 3483: 2460:) copies of the partial order on 2316:{\displaystyle {\mathcal {P}}(S)} 2243:{\displaystyle {\mathcal {P}}(S)} 2180:{\displaystyle {\mathcal {P}}(S)} 2080:is a proper subset of the set of 2057:is a proper subset of the set of 2050:is an odd number greater than 10} 6388: 6377: 5480: 5410: 3637: 3463:(Fourth ed.). p. 337. 2899:is also common, especially when 2811:{\displaystyle {\tbinom {A}{k}}} 2113: 2101: 1581:(also called strict) subset and 1195: 3602: 5456: 3573: 3541: 3502: 3477: 3452: 3419: 3329: 3323: 3317: 3311: 3261: 3255: 3223: 3211: 3173:The subset relation defines a 3152: 3144: 3136: 3122: 2880: 2873: 2438: 2430: 2391: 2385: 2310: 2304: 2290:. We may also partially order 2267: 2237: 2231: 2174: 2168: 1911:form a subset of the polygons. 804:{\displaystyle B\supsetneq A.} 503: 459: 447: 444: 441: 429: 290: 219:is included (or contained) in 13: 1: 5371:History of mathematical logic 3412: 2930:Other properties of inclusion 2020:{\displaystyle D\subsetneq E} 1961:{\displaystyle A\subsetneq B} 1843:{\displaystyle A\subseteq B,} 1406:Some authors use the symbols 1390:{\displaystyle B\subsetneq A} 1364:{\displaystyle A\subsetneq B} 1331:{\displaystyle A\subsetneq C} 1305:{\displaystyle B\subsetneq C} 1279:{\displaystyle A\subsetneq B} 1245:{\displaystyle A\subsetneq A} 959:{\displaystyle A\subseteq C.} 859:{\displaystyle \varnothing ,} 753:{\displaystyle A\subsetneq B} 669:{\displaystyle B\supseteq A.} 565: 555:{\displaystyle A\subseteq B,} 382:{\displaystyle A\subseteq B,} 6414:Basic concepts in set theory 5296:Primitive recursive function 3229:{\displaystyle (X,\preceq )} 2822:, which count the number of 2688:{\displaystyle \{0,1\}^{k},} 2615:{\displaystyle T\subseteq S} 2125: 1994:{\displaystyle D\subseteq E} 1935:{\displaystyle A\subseteq B} 1621:{\displaystyle \supsetneq .} 1158:{\displaystyle B\subseteq A} 1132:{\displaystyle A\subseteq B} 1099:{\displaystyle A\subseteq C} 1073:{\displaystyle B\subseteq C} 1047:{\displaystyle A\subseteq B} 1014:{\displaystyle A\subseteq A} 930:{\displaystyle B\subseteq C} 904:{\displaystyle A\subseteq B} 626:{\displaystyle A\subseteq B} 341:{\displaystyle A\subseteq B} 322:One can prove the statement 256:{\displaystyle A\subseteq B} 121:{\displaystyle B\supseteq A} 87:{\displaystyle A\subseteq B} 7: 3348: 3338:{\displaystyle \subseteq .} 3248:is identified with the set 3200:Inclusion is the canonical 1880:{\displaystyle A\subset B,} 1598:{\displaystyle \subsetneq } 1523:{\displaystyle A\subset A.} 1490:{\displaystyle \supseteq .} 10: 6430: 5947:von Neumann–Bernays–Gödel 4360:Schröder–Bernstein theorem 4087:Monadic predicate calculus 3746:Foundations of mathematics 3550:Subsets and Proper Subsets 3516:(3rd ed.), New York: 3426:Rosen, Kenneth H. (2012). 3195:Boolean inclusion relation 3118: if and only if  3041: if and only if  2972: if and only if  2341: if and only if  2206:{\displaystyle \subseteq } 2130:The set of all subsets of 2108:A is a proper subset of B. 1891:definitely does not equal 1785:definitely does not equal 1641:{\displaystyle \subseteq } 1467:{\displaystyle \subseteq } 43:horseshoe (disambiguation) 36: 29: 6374: 6125: 6011: 5974: 5886: 5776: 5748:One-to-one correspondence 5664: 5605: 5489: 5478: 5464: 5406: 5393:Philosophy of mathematics 5342:Automated theorem proving 5324: 5219: 5051: 4944: 4796: 4513: 4489: 4467:Von Neumann–Bernays–Gödel 4412: 4306: 4210: 4108: 4099: 4026: 3961: 3867: 3789: 3706: 3514:Real and complex analysis 207:may also be expressed as 32:Superset (disambiguation) 3459:Epp, Susanna S. (2011). 1814:{\displaystyle \subset } 1737:{\displaystyle x\leq y,} 1661:{\displaystyle \subset } 1570:{\displaystyle \supset } 1550:{\displaystyle \subset } 1439:{\displaystyle \supset } 1419:{\displaystyle \subset } 420:universal generalization 360:be given. To prove that 5043:Self-verifying theories 4864:Tarski's axiomatization 3815:Tarski's undefinability 3810:incompleteness theorems 3391:Subsumptive containment 3297:{\displaystyle a\leq b} 2622:(i.e., each element of 2511:{\displaystyle 0<1.} 2485:{\displaystyle \{0,1\}} 1774:{\displaystyle x<y,} 533:which is equivalent to 211:includes (or contains) 6395:Mathematics portal 5706:Constructible universe 5526:Constructibility (V=L) 5417:Mathematics portal 5028:Proof of impossibility 4676:propositional variable 3986:Propositional calculus 3339: 3298: 3268: 3230: 3163: 3066: 2997: 2913: 2893: 2856: 2836: 2812: 2771: 2751: 2720: 2689: 2643: 2616: 2590: 2512: 2486: 2446: 2398: 2360: 2317: 2284: 2244: 2207: 2181: 2144: 2092:Another example in an 2088:) than the former set. 2021: 1995: 1962: 1936: 1912: 1881: 1844: 1815: 1775: 1738: 1709: 1686: 1662: 1642: 1622: 1599: 1571: 1551: 1524: 1491: 1468: 1440: 1420: 1391: 1365: 1332: 1306: 1280: 1246: 1220: 1185: 1159: 1133: 1100: 1074: 1048: 1015: 989: 966: 960: 931: 905: 860: 837: 805: 754: 670: 627: 586:is also an element of 556: 527: 466: 422:: the technique shows 416: 383: 342: 314: 257: 129: 122: 88: 41:. For other uses, see 6384:Philosophy portal 5929:Principia Mathematica 5763:Transfinite induction 5622:(i.e. set difference) 5286:Kolmogorov complexity 5239:Computably enumerable 5139:Model complete theory 4931:Principia Mathematica 3991:Propositional formula 3820:Banach–Tarski paradox 3586:mathworld.wolfram.com 3340: 3299: 3269: 3231: 3164: 3092:, if and only if the 3067: 2998: 2914: 2894: 2857: 2837: 2820:binomial coefficients 2813: 2772: 2752: 2721: 2719:{\displaystyle s_{i}} 2690: 2644: 2642:{\displaystyle 2^{S}} 2617: 2591: 2513: 2487: 2447: 2445:{\displaystyle k=|S|} 2399: 2361: 2318: 2285: 2245: 2208: 2182: 2145: 2022: 1996: 1963: 1937: 1906: 1882: 1854:may or may not equal 1845: 1821:is proper subset, if 1816: 1776: 1748:may or may not equal 1739: 1710: 1708:{\displaystyle <.} 1687: 1685:{\displaystyle \leq } 1663: 1643: 1623: 1600: 1572: 1552: 1525: 1492: 1469: 1441: 1421: 1392: 1366: 1333: 1307: 1281: 1247: 1221: 1186: 1160: 1134: 1101: 1075: 1049: 1016: 990: 961: 932: 906: 885: 861: 838: 806: 755: 671: 628: 557: 528: 467: 384: 350: 343: 315: 258: 171:. It is possible for 155:are also elements of 123: 89: 51: 6003:Burali-Forti paradox 5758:Set-builder notation 5711:Continuum hypothesis 5651:Symmetric difference 5234:Church–Turing thesis 5221:Computability theory 4430:continuum hypothesis 3948:Square of opposition 3806:Gödel's completeness 3646:at Wikimedia Commons 3486:Set Theory and Logic 3308: 3282: 3252: 3208: 3104: 3027: 2958: 2903: 2892:{\displaystyle ^{k}} 2870: 2846: 2826: 2781: 2761: 2741: 2703: 2657: 2626: 2600: 2522: 2496: 2464: 2420: 2372: 2327: 2294: 2254: 2221: 2197: 2158: 2154:, and is denoted by 2134: 2027:is not true (false). 2005: 1979: 1946: 1920: 1862: 1825: 1805: 1799:irreflexive relation 1756: 1719: 1696: 1676: 1652: 1632: 1609: 1589: 1561: 1541: 1505: 1478: 1458: 1430: 1410: 1375: 1349: 1316: 1290: 1264: 1230: 1210: 1169: 1143: 1117: 1084: 1058: 1032: 999: 979: 941: 915: 889: 870:a subset of any set 847: 836:{\displaystyle \{\}} 824: 786: 738: 651: 611: 537: 480: 426: 364: 326: 267: 241: 106: 72: 5964:Tarski–Grothendieck 5388:Mathematical object 5279:P versus NP problem 5244:Computable function 5038:Reverse mathematics 4964:Logical consequence 4841:primitive recursive 4836:elementary function 4609:Free/bound variable 4462:Tarski–Grothendieck 3981:Logical connectives 3911:Logical equivalence 3761:Logical consequence 3616:. Springer-Verlag. 3580:Weisstein, Eric W. 1899:Examples of subsets 1184:{\displaystyle A=B} 578:are sets and every 94:) and, conversely, 5553:Limitation of size 5186:Transfer principle 5149:Semantics of logic 5134:Categorical theory 5110:Non-standard model 4624:Logical connective 3751:Information theory 3700:Mathematical logic 3652:Weisstein, Eric W. 3385:Subset sum problem 3335: 3294: 3264: 3226: 3159: 3062: 2993: 2909: 2889: 2852: 2832: 2808: 2806: 2767: 2747: 2716: 2685: 2639: 2612: 2586: 2508: 2482: 2442: 2394: 2368:For the power set 2356: 2313: 2280: 2240: 2203: 2177: 2140: 2017: 1991: 1958: 1932: 1913: 1877: 1840: 1811: 1771: 1734: 1705: 1682: 1658: 1638: 1618: 1595: 1567: 1547: 1532:reflexive relation 1520: 1487: 1464: 1436: 1416: 1387: 1361: 1328: 1302: 1276: 1242: 1216: 1181: 1155: 1129: 1096: 1070: 1044: 1011: 985: 967: 956: 927: 901: 856: 833: 801: 760:, or equivalently, 750: 666: 633:, or equivalently, 623: 552: 523: 462: 379: 338: 310: 263:is represented as 253: 132:In mathematics, a 130: 118: 84: 39:horseshoe (symbol) 6401: 6400: 6369: 6368: 6084: 6083: 5993:Russell's paradox 5942:Zermelo–Fraenkel 5843:Dedekind-infinite 5716:Diagonal argument 5615:Cartesian product 5472:Set (mathematics) 5424: 5423: 5356:Abstract category 5159:Theories of truth 4969:Rule of inference 4959:Natural deduction 4940: 4939: 4485: 4484: 4190:Cartesian product 4095: 4094: 4001:Many-valued logic 3976:Boolean functions 3859:Russell's paradox 3834:diagonal argument 3731:First-order logic 3642:Media related to 3527:978-0-07-054234-1 3495:978-0-486-63829-4 3484:Stoll, Robert R. 3470:978-0-495-39132-6 3445:978-0-07-338309-5 3119: 3042: 2973: 2912:{\displaystyle k} 2862:-element set. In 2855:{\displaystyle n} 2835:{\displaystyle k} 2799: 2770:{\displaystyle A} 2750:{\displaystyle k} 2414:Cartesian product 2410:order isomorphism 2342: 2143:{\displaystyle S} 1668:analogous to the 1628:This usage makes 1219:{\displaystyle A} 988:{\displaystyle A} 562:as stated above. 409:is an element of 237:When quantified, 230:is a subset with 98:is a superset of 16:(Redirected from 6421: 6393: 6392: 6382: 6381: 6380: 6226: 6175: 6141: 6128: 6127: 6111: 6104: 6097: 6088: 6087: 6066:Bertrand Russell 6056:John von Neumann 6041:Abraham Fraenkel 6036:Richard Dedekind 5998:Suslin's problem 5909:Cantor's theorem 5626:De Morgan's laws 5484: 5451: 5444: 5437: 5428: 5427: 5415: 5414: 5366:History of logic 5361:Category of sets 5254:Decision problem 5033:Ordinal analysis 4974:Sequent calculus 4872:Boolean algebras 4812: 4811: 4786: 4757:logical/constant 4511: 4510: 4497: 4420:Zermelo–Fraenkel 4171:Set operations: 4106: 4105: 4043: 3874: 3873: 3854:Löwenheim–Skolem 3741:Formal semantics 3693: 3686: 3679: 3670: 3669: 3665: 3664: 3641: 3627: 3596: 3595: 3593: 3592: 3577: 3571: 3570: 3569: 3568: 3562: 3556:, archived from 3555: 3545: 3539: 3538: 3506: 3500: 3499: 3481: 3475: 3474: 3456: 3450: 3449: 3433: 3423: 3402: 3381: 3360: 3344: 3342: 3341: 3336: 3303: 3301: 3300: 3295: 3273: 3271: 3270: 3267:{\displaystyle } 3265: 3235: 3233: 3232: 3227: 3168: 3166: 3165: 3160: 3155: 3147: 3139: 3125: 3120: 3117: 3071: 3069: 3068: 3063: 3043: 3040: 3002: 3000: 2999: 2994: 2974: 2971: 2918: 2916: 2915: 2910: 2898: 2896: 2895: 2890: 2888: 2887: 2861: 2859: 2858: 2853: 2841: 2839: 2838: 2833: 2817: 2815: 2814: 2809: 2807: 2805: 2804: 2791: 2776: 2774: 2773: 2768: 2756: 2754: 2753: 2748: 2725: 2723: 2722: 2717: 2715: 2714: 2694: 2692: 2691: 2686: 2681: 2680: 2648: 2646: 2645: 2640: 2638: 2637: 2621: 2619: 2618: 2613: 2595: 2593: 2592: 2587: 2582: 2578: 2577: 2576: 2558: 2557: 2545: 2544: 2517: 2515: 2514: 2509: 2491: 2489: 2488: 2483: 2451: 2449: 2448: 2443: 2441: 2433: 2403: 2401: 2400: 2395: 2381: 2380: 2365: 2363: 2362: 2357: 2343: 2340: 2322: 2320: 2319: 2314: 2303: 2302: 2289: 2287: 2286: 2281: 2249: 2247: 2246: 2241: 2230: 2229: 2212: 2210: 2209: 2204: 2186: 2184: 2183: 2178: 2167: 2166: 2149: 2147: 2146: 2141: 2117: 2105: 2078:rational numbers 2059:rational numbers 2026: 2024: 2023: 2018: 2000: 1998: 1997: 1992: 1967: 1965: 1964: 1959: 1941: 1939: 1938: 1933: 1909:regular polygons 1886: 1884: 1883: 1878: 1849: 1847: 1846: 1841: 1820: 1818: 1817: 1812: 1780: 1778: 1777: 1772: 1743: 1741: 1740: 1735: 1715:For example, if 1714: 1712: 1711: 1706: 1691: 1689: 1688: 1683: 1667: 1665: 1664: 1659: 1647: 1645: 1644: 1639: 1627: 1625: 1624: 1619: 1604: 1602: 1601: 1596: 1576: 1574: 1573: 1568: 1556: 1554: 1553: 1548: 1529: 1527: 1526: 1521: 1496: 1494: 1493: 1488: 1473: 1471: 1470: 1465: 1445: 1443: 1442: 1437: 1425: 1423: 1422: 1417: 1396: 1394: 1393: 1388: 1370: 1368: 1367: 1362: 1337: 1335: 1334: 1329: 1311: 1309: 1308: 1303: 1285: 1283: 1282: 1277: 1251: 1249: 1248: 1243: 1225: 1223: 1222: 1217: 1206:: Given any set 1190: 1188: 1187: 1182: 1164: 1162: 1161: 1156: 1138: 1136: 1135: 1130: 1105: 1103: 1102: 1097: 1079: 1077: 1076: 1071: 1053: 1051: 1050: 1045: 1020: 1018: 1017: 1012: 994: 992: 991: 986: 975:: Given any set 965: 963: 962: 957: 936: 934: 933: 928: 910: 908: 907: 902: 878:Basic properties 865: 863: 862: 857: 842: 840: 839: 834: 810: 808: 807: 802: 759: 757: 756: 751: 675: 673: 672: 667: 632: 630: 629: 624: 561: 559: 558: 553: 532: 530: 529: 524: 519: 515: 471: 469: 468: 463: 388: 386: 385: 380: 347: 345: 344: 339: 319: 317: 316: 311: 306: 302: 262: 260: 259: 254: 127: 125: 124: 119: 93: 91: 90: 85: 21: 6429: 6428: 6424: 6423: 6422: 6420: 6419: 6418: 6404: 6403: 6402: 6397: 6387: 6386: 6378: 6376: 6370: 6365: 6361: 6353: 6349: 6341: 6338: 6335: 6327: 6324: 6321: 6313: 6309: 6304: 6296: 6292: 6287: 6279: 6278: 6275: 6271: 6263: 6262: 6259: 6255: 6247: 6243: 6235: 6231: 6222: 6213: 6209: 6204: 6196: 6192: 6184: 6180: 6171: 6162: 6158: 6150: 6146: 6137: 6121: 6119:logical symbols 6115: 6085: 6080: 6007: 5986: 5970: 5935:New Foundations 5882: 5772: 5691:Cardinal number 5674: 5660: 5601: 5485: 5476: 5460: 5455: 5425: 5420: 5409: 5402: 5347:Category theory 5337:Algebraic logic 5320: 5291:Lambda calculus 5229:Church encoding 5215: 5191:Truth predicate 5047: 5013:Complete theory 4936: 4805: 4801: 4797: 4792: 4784: 4504: and  4500: 4495: 4481: 4457:New Foundations 4425:axiom of choice 4408: 4370:Gödel numbering 4310: and  4302: 4206: 4091: 4041: 4022: 3971:Boolean algebra 3957: 3921:Equiconsistency 3886:Classical logic 3863: 3844:Halting problem 3832: and  3808: and  3796: and  3795: 3790:Theorems ( 3785: 3702: 3697: 3634: 3624: 3605: 3600: 3599: 3590: 3588: 3578: 3574: 3566: 3564: 3560: 3553: 3547: 3546: 3542: 3528: 3507: 3503: 3496: 3482: 3478: 3471: 3457: 3453: 3446: 3424: 3420: 3415: 3400: 3379: 3364:Inclusion order 3358: 3351: 3309: 3306: 3305: 3304:if and only if 3283: 3280: 3279: 3253: 3250: 3249: 3242:ordinal numbers 3209: 3206: 3205: 3179:Boolean algebra 3151: 3143: 3135: 3121: 3116: 3105: 3102: 3101: 3039: 3028: 3025: 3024: 2970: 2959: 2956: 2955: 2932: 2924:cardinal number 2904: 2901: 2900: 2883: 2879: 2871: 2868: 2867: 2866:, the notation 2847: 2844: 2843: 2842:-subsets of an 2827: 2824: 2823: 2800: 2787: 2786: 2784: 2782: 2779: 2778: 2762: 2759: 2758: 2742: 2739: 2738: 2737:The set of all 2710: 2706: 2704: 2701: 2700: 2676: 2672: 2658: 2655: 2654: 2633: 2629: 2627: 2624: 2623: 2601: 2598: 2597: 2572: 2568: 2553: 2549: 2540: 2536: 2535: 2531: 2523: 2520: 2519: 2497: 2494: 2493: 2465: 2462: 2461: 2437: 2429: 2421: 2418: 2417: 2376: 2375: 2373: 2370: 2369: 2339: 2328: 2325: 2324: 2298: 2297: 2295: 2292: 2291: 2255: 2252: 2251: 2225: 2224: 2222: 2219: 2218: 2198: 2195: 2194: 2162: 2161: 2159: 2156: 2155: 2135: 2132: 2131: 2128: 2121: 2118: 2109: 2106: 2055:natural numbers 2006: 2003: 2002: 1980: 1977: 1976: 1947: 1944: 1943: 1921: 1918: 1917: 1901: 1863: 1860: 1859: 1826: 1823: 1822: 1806: 1803: 1802: 1757: 1754: 1753: 1720: 1717: 1716: 1697: 1694: 1693: 1677: 1674: 1673: 1653: 1650: 1649: 1633: 1630: 1629: 1610: 1607: 1606: 1590: 1587: 1586: 1562: 1559: 1558: 1542: 1539: 1538: 1506: 1503: 1502: 1479: 1476: 1475: 1459: 1456: 1455: 1431: 1428: 1427: 1411: 1408: 1407: 1404: 1402:⊂ and ⊃ symbols 1376: 1373: 1372: 1350: 1347: 1346: 1317: 1314: 1313: 1291: 1288: 1287: 1265: 1262: 1261: 1231: 1228: 1227: 1211: 1208: 1207: 1198: 1170: 1167: 1166: 1144: 1141: 1140: 1118: 1115: 1114: 1085: 1082: 1081: 1059: 1056: 1055: 1033: 1030: 1029: 1000: 997: 996: 980: 977: 976: 942: 939: 938: 916: 913: 912: 890: 887: 886: 880: 848: 845: 844: 825: 822: 821: 787: 784: 783: 739: 736: 735: 685:is a subset of 652: 649: 648: 612: 609: 608: 568: 538: 535: 534: 493: 489: 481: 478: 477: 427: 424: 423: 365: 362: 361: 327: 324: 323: 280: 276: 268: 265: 264: 242: 239: 238: 203:is a subset of 107: 104: 103: 73: 70: 69: 56: 46: 35: 28: 23: 22: 15: 12: 11: 5: 6427: 6417: 6416: 6399: 6398: 6375: 6372: 6371: 6367: 6366: 6357: 6356: 6354: 6345: 6344: 6342: 6331: 6330: 6328: 6317: 6316: 6314: 6300: 6299: 6297: 6283: 6282: 6280: 6276:quantification 6272: 6267: 6266: 6264: 6260:quantification 6256: 6251: 6250: 6248: 6239: 6238: 6236: 6217: 6216: 6214: 6200: 6199: 6197: 6188: 6187: 6185: 6166: 6165: 6163: 6154: 6153: 6151: 6132: 6131: 6126: 6123: 6122: 6114: 6113: 6106: 6099: 6091: 6082: 6081: 6079: 6078: 6073: 6071:Thoralf Skolem 6068: 6063: 6058: 6053: 6048: 6043: 6038: 6033: 6028: 6023: 6017: 6015: 6009: 6008: 6006: 6005: 6000: 5995: 5989: 5987: 5985: 5984: 5981: 5975: 5972: 5971: 5969: 5968: 5967: 5966: 5961: 5956: 5955: 5954: 5939: 5938: 5937: 5925: 5924: 5923: 5912: 5911: 5906: 5901: 5896: 5890: 5888: 5884: 5883: 5881: 5880: 5875: 5870: 5865: 5856: 5851: 5846: 5836: 5831: 5830: 5829: 5824: 5819: 5809: 5799: 5794: 5789: 5783: 5781: 5774: 5773: 5771: 5770: 5765: 5760: 5755: 5753:Ordinal number 5750: 5745: 5740: 5735: 5734: 5733: 5728: 5718: 5713: 5708: 5703: 5698: 5688: 5683: 5677: 5675: 5673: 5672: 5669: 5665: 5662: 5661: 5659: 5658: 5653: 5648: 5643: 5638: 5633: 5631:Disjoint union 5628: 5623: 5617: 5611: 5609: 5603: 5602: 5600: 5599: 5598: 5597: 5592: 5581: 5580: 5578:Martin's axiom 5575: 5570: 5565: 5560: 5555: 5550: 5545: 5543:Extensionality 5540: 5539: 5538: 5528: 5523: 5522: 5521: 5516: 5511: 5501: 5495: 5493: 5487: 5486: 5479: 5477: 5475: 5474: 5468: 5466: 5462: 5461: 5454: 5453: 5446: 5439: 5431: 5422: 5421: 5407: 5404: 5403: 5401: 5400: 5395: 5390: 5385: 5380: 5379: 5378: 5368: 5363: 5358: 5349: 5344: 5339: 5334: 5332:Abstract logic 5328: 5326: 5322: 5321: 5319: 5318: 5313: 5311:Turing machine 5308: 5303: 5298: 5293: 5288: 5283: 5282: 5281: 5276: 5271: 5266: 5261: 5251: 5249:Computable set 5246: 5241: 5236: 5231: 5225: 5223: 5217: 5216: 5214: 5213: 5208: 5203: 5198: 5193: 5188: 5183: 5178: 5177: 5176: 5171: 5166: 5156: 5151: 5146: 5144:Satisfiability 5141: 5136: 5131: 5130: 5129: 5119: 5118: 5117: 5107: 5106: 5105: 5100: 5095: 5090: 5085: 5075: 5074: 5073: 5068: 5061:Interpretation 5057: 5055: 5049: 5048: 5046: 5045: 5040: 5035: 5030: 5025: 5015: 5010: 5009: 5008: 5007: 5006: 4996: 4991: 4981: 4976: 4971: 4966: 4961: 4956: 4950: 4948: 4942: 4941: 4938: 4937: 4935: 4934: 4926: 4925: 4924: 4923: 4918: 4917: 4916: 4911: 4906: 4886: 4885: 4884: 4882:minimal axioms 4879: 4868: 4867: 4866: 4855: 4854: 4853: 4848: 4843: 4838: 4833: 4828: 4815: 4813: 4794: 4793: 4791: 4790: 4789: 4788: 4776: 4771: 4770: 4769: 4764: 4759: 4754: 4744: 4739: 4734: 4729: 4728: 4727: 4722: 4712: 4711: 4710: 4705: 4700: 4695: 4685: 4680: 4679: 4678: 4673: 4668: 4658: 4657: 4656: 4651: 4646: 4641: 4636: 4631: 4621: 4616: 4611: 4606: 4605: 4604: 4599: 4594: 4589: 4579: 4574: 4572:Formation rule 4569: 4564: 4563: 4562: 4557: 4547: 4546: 4545: 4535: 4530: 4525: 4520: 4514: 4508: 4491:Formal systems 4487: 4486: 4483: 4482: 4480: 4479: 4474: 4469: 4464: 4459: 4454: 4449: 4444: 4439: 4434: 4433: 4432: 4427: 4416: 4414: 4410: 4409: 4407: 4406: 4405: 4404: 4394: 4389: 4388: 4387: 4380:Large cardinal 4377: 4372: 4367: 4362: 4357: 4343: 4342: 4341: 4336: 4331: 4316: 4314: 4304: 4303: 4301: 4300: 4299: 4298: 4293: 4288: 4278: 4273: 4268: 4263: 4258: 4253: 4248: 4243: 4238: 4233: 4228: 4223: 4217: 4215: 4208: 4207: 4205: 4204: 4203: 4202: 4197: 4192: 4187: 4182: 4177: 4169: 4168: 4167: 4162: 4152: 4147: 4145:Extensionality 4142: 4140:Ordinal number 4137: 4127: 4122: 4121: 4120: 4109: 4103: 4097: 4096: 4093: 4092: 4090: 4089: 4084: 4079: 4074: 4069: 4064: 4059: 4058: 4057: 4047: 4046: 4045: 4032: 4030: 4024: 4023: 4021: 4020: 4019: 4018: 4013: 4008: 3998: 3993: 3988: 3983: 3978: 3973: 3967: 3965: 3959: 3958: 3956: 3955: 3950: 3945: 3940: 3935: 3930: 3925: 3924: 3923: 3913: 3908: 3903: 3898: 3893: 3888: 3882: 3880: 3871: 3865: 3864: 3862: 3861: 3856: 3851: 3846: 3841: 3836: 3824:Cantor's  3822: 3817: 3812: 3802: 3800: 3787: 3786: 3784: 3783: 3778: 3773: 3768: 3763: 3758: 3753: 3748: 3743: 3738: 3733: 3728: 3723: 3722: 3721: 3710: 3708: 3704: 3703: 3696: 3695: 3688: 3681: 3673: 3667: 3666: 3647: 3633: 3632:External links 3630: 3629: 3628: 3622: 3604: 3601: 3598: 3597: 3572: 3540: 3526: 3501: 3494: 3476: 3469: 3451: 3444: 3417: 3416: 3414: 3411: 3410: 3409: 3403: 3394: 3388: 3382: 3373: 3367: 3361: 3350: 3347: 3346: 3345: 3334: 3331: 3328: 3325: 3322: 3319: 3316: 3313: 3293: 3290: 3287: 3263: 3260: 3257: 3225: 3222: 3219: 3216: 3213: 3198: 3170: 3169: 3158: 3154: 3150: 3146: 3142: 3138: 3134: 3131: 3128: 3124: 3115: 3112: 3109: 3098: 3097: 3073: 3072: 3061: 3058: 3055: 3052: 3049: 3046: 3038: 3035: 3032: 3021: 3020: 3004: 3003: 2992: 2989: 2986: 2983: 2980: 2977: 2969: 2966: 2963: 2952: 2951: 2948:if and only if 2931: 2928: 2908: 2886: 2882: 2878: 2875: 2851: 2831: 2803: 2798: 2795: 2790: 2777:is denoted by 2766: 2746: 2713: 2709: 2684: 2679: 2675: 2671: 2668: 2665: 2662: 2636: 2632: 2611: 2608: 2605: 2585: 2581: 2575: 2571: 2567: 2564: 2561: 2556: 2552: 2548: 2543: 2539: 2534: 2530: 2527: 2507: 2504: 2501: 2481: 2478: 2475: 2472: 2469: 2440: 2436: 2432: 2428: 2425: 2393: 2390: 2387: 2384: 2379: 2355: 2352: 2349: 2346: 2338: 2335: 2332: 2312: 2309: 2306: 2301: 2279: 2276: 2273: 2269: 2265: 2262: 2259: 2239: 2236: 2233: 2228: 2202: 2190:The inclusion 2176: 2173: 2170: 2165: 2150:is called its 2139: 2127: 2124: 2123: 2122: 2119: 2112: 2110: 2107: 2100: 2090: 2089: 2087: 2074: 2051: 2028: 2016: 2013: 2010: 1990: 1987: 1984: 1974: 1969: 1957: 1954: 1951: 1931: 1928: 1925: 1900: 1897: 1876: 1873: 1870: 1867: 1839: 1836: 1833: 1830: 1810: 1770: 1767: 1764: 1761: 1733: 1730: 1727: 1724: 1704: 1701: 1681: 1657: 1637: 1617: 1614: 1594: 1584: 1580: 1566: 1546: 1519: 1516: 1513: 1510: 1486: 1483: 1463: 1453: 1449: 1435: 1415: 1403: 1400: 1399: 1398: 1386: 1383: 1380: 1360: 1357: 1354: 1338: 1327: 1324: 1321: 1301: 1298: 1295: 1275: 1272: 1269: 1253: 1241: 1238: 1235: 1215: 1197: 1194: 1193: 1192: 1180: 1177: 1174: 1154: 1151: 1148: 1128: 1125: 1122: 1106: 1095: 1092: 1089: 1069: 1066: 1063: 1043: 1040: 1037: 1021: 1010: 1007: 1004: 984: 955: 952: 949: 946: 926: 923: 920: 900: 897: 894: 879: 876: 855: 852: 832: 829: 814: 813: 812: 811: 800: 797: 794: 791: 761: 749: 746: 743: 679: 678: 677: 676: 665: 662: 659: 656: 634: 622: 619: 616: 567: 564: 551: 548: 545: 542: 522: 518: 514: 511: 508: 505: 502: 499: 496: 492: 488: 485: 461: 458: 455: 452: 449: 446: 443: 440: 437: 434: 431: 415: 414: 400: 378: 375: 372: 369: 337: 334: 331: 309: 305: 301: 298: 295: 292: 289: 286: 283: 279: 275: 272: 252: 249: 246: 195:(or sometimes 117: 114: 111: 83: 80: 77: 26: 9: 6: 4: 3: 2: 6426: 6415: 6412: 6411: 6409: 6396: 6391: 6385: 6373: 6364: 6360: 6355: 6352: 6348: 6343: 6340: 6334: 6329: 6326: 6320: 6315: 6312: 6311:contradiction 6307: 6303: 6298: 6295: 6290: 6286: 6281: 6277: 6270: 6265: 6261: 6254: 6249: 6246: 6242: 6237: 6234: 6230: 6225: 6220: 6215: 6212: 6207: 6203: 6198: 6195: 6191: 6186: 6183: 6179: 6174: 6169: 6164: 6161: 6157: 6152: 6149: 6145: 6140: 6135: 6130: 6129: 6124: 6120: 6112: 6107: 6105: 6100: 6098: 6093: 6092: 6089: 6077: 6076:Ernst Zermelo 6074: 6072: 6069: 6067: 6064: 6062: 6061:Willard Quine 6059: 6057: 6054: 6052: 6049: 6047: 6044: 6042: 6039: 6037: 6034: 6032: 6029: 6027: 6024: 6022: 6019: 6018: 6016: 6014: 6013:Set theorists 6010: 6004: 6001: 5999: 5996: 5994: 5991: 5990: 5988: 5982: 5980: 5977: 5976: 5973: 5965: 5962: 5960: 5959:Kripke–Platek 5957: 5953: 5950: 5949: 5948: 5945: 5944: 5943: 5940: 5936: 5933: 5932: 5931: 5930: 5926: 5922: 5919: 5918: 5917: 5914: 5913: 5910: 5907: 5905: 5902: 5900: 5897: 5895: 5892: 5891: 5889: 5885: 5879: 5876: 5874: 5871: 5869: 5866: 5864: 5862: 5857: 5855: 5852: 5850: 5847: 5844: 5840: 5837: 5835: 5832: 5828: 5825: 5823: 5820: 5818: 5815: 5814: 5813: 5810: 5807: 5803: 5800: 5798: 5795: 5793: 5790: 5788: 5785: 5784: 5782: 5779: 5775: 5769: 5766: 5764: 5761: 5759: 5756: 5754: 5751: 5749: 5746: 5744: 5741: 5739: 5736: 5732: 5729: 5727: 5724: 5723: 5722: 5719: 5717: 5714: 5712: 5709: 5707: 5704: 5702: 5699: 5696: 5692: 5689: 5687: 5684: 5682: 5679: 5678: 5676: 5670: 5667: 5666: 5663: 5657: 5654: 5652: 5649: 5647: 5644: 5642: 5639: 5637: 5634: 5632: 5629: 5627: 5624: 5621: 5618: 5616: 5613: 5612: 5610: 5608: 5604: 5596: 5595:specification 5593: 5591: 5588: 5587: 5586: 5583: 5582: 5579: 5576: 5574: 5571: 5569: 5566: 5564: 5561: 5559: 5556: 5554: 5551: 5549: 5546: 5544: 5541: 5537: 5534: 5533: 5532: 5529: 5527: 5524: 5520: 5517: 5515: 5512: 5510: 5507: 5506: 5505: 5502: 5500: 5497: 5496: 5494: 5492: 5488: 5483: 5473: 5470: 5469: 5467: 5463: 5459: 5452: 5447: 5445: 5440: 5438: 5433: 5432: 5429: 5419: 5418: 5413: 5405: 5399: 5396: 5394: 5391: 5389: 5386: 5384: 5381: 5377: 5374: 5373: 5372: 5369: 5367: 5364: 5362: 5359: 5357: 5353: 5350: 5348: 5345: 5343: 5340: 5338: 5335: 5333: 5330: 5329: 5327: 5323: 5317: 5314: 5312: 5309: 5307: 5306:Recursive set 5304: 5302: 5299: 5297: 5294: 5292: 5289: 5287: 5284: 5280: 5277: 5275: 5272: 5270: 5267: 5265: 5262: 5260: 5257: 5256: 5255: 5252: 5250: 5247: 5245: 5242: 5240: 5237: 5235: 5232: 5230: 5227: 5226: 5224: 5222: 5218: 5212: 5209: 5207: 5204: 5202: 5199: 5197: 5194: 5192: 5189: 5187: 5184: 5182: 5179: 5175: 5172: 5170: 5167: 5165: 5162: 5161: 5160: 5157: 5155: 5152: 5150: 5147: 5145: 5142: 5140: 5137: 5135: 5132: 5128: 5125: 5124: 5123: 5120: 5116: 5115:of arithmetic 5113: 5112: 5111: 5108: 5104: 5101: 5099: 5096: 5094: 5091: 5089: 5086: 5084: 5081: 5080: 5079: 5076: 5072: 5069: 5067: 5064: 5063: 5062: 5059: 5058: 5056: 5054: 5050: 5044: 5041: 5039: 5036: 5034: 5031: 5029: 5026: 5023: 5022:from ZFC 5019: 5016: 5014: 5011: 5005: 5002: 5001: 5000: 4997: 4995: 4992: 4990: 4987: 4986: 4985: 4982: 4980: 4977: 4975: 4972: 4970: 4967: 4965: 4962: 4960: 4957: 4955: 4952: 4951: 4949: 4947: 4943: 4933: 4932: 4928: 4927: 4922: 4921:non-Euclidean 4919: 4915: 4912: 4910: 4907: 4905: 4904: 4900: 4899: 4897: 4894: 4893: 4891: 4887: 4883: 4880: 4878: 4875: 4874: 4873: 4869: 4865: 4862: 4861: 4860: 4856: 4852: 4849: 4847: 4844: 4842: 4839: 4837: 4834: 4832: 4829: 4827: 4824: 4823: 4821: 4817: 4816: 4814: 4809: 4803: 4798:Example  4795: 4787: 4782: 4781: 4780: 4777: 4775: 4772: 4768: 4765: 4763: 4760: 4758: 4755: 4753: 4750: 4749: 4748: 4745: 4743: 4740: 4738: 4735: 4733: 4730: 4726: 4723: 4721: 4718: 4717: 4716: 4713: 4709: 4706: 4704: 4701: 4699: 4696: 4694: 4691: 4690: 4689: 4686: 4684: 4681: 4677: 4674: 4672: 4669: 4667: 4664: 4663: 4662: 4659: 4655: 4652: 4650: 4647: 4645: 4642: 4640: 4637: 4635: 4632: 4630: 4627: 4626: 4625: 4622: 4620: 4617: 4615: 4612: 4610: 4607: 4603: 4600: 4598: 4595: 4593: 4590: 4588: 4585: 4584: 4583: 4580: 4578: 4575: 4573: 4570: 4568: 4565: 4561: 4558: 4556: 4555:by definition 4553: 4552: 4551: 4548: 4544: 4541: 4540: 4539: 4536: 4534: 4531: 4529: 4526: 4524: 4521: 4519: 4516: 4515: 4512: 4509: 4507: 4503: 4498: 4492: 4488: 4478: 4475: 4473: 4470: 4468: 4465: 4463: 4460: 4458: 4455: 4453: 4450: 4448: 4445: 4443: 4442:Kripke–Platek 4440: 4438: 4435: 4431: 4428: 4426: 4423: 4422: 4421: 4418: 4417: 4415: 4411: 4403: 4400: 4399: 4398: 4395: 4393: 4390: 4386: 4383: 4382: 4381: 4378: 4376: 4373: 4371: 4368: 4366: 4363: 4361: 4358: 4355: 4351: 4347: 4344: 4340: 4337: 4335: 4332: 4330: 4327: 4326: 4325: 4321: 4318: 4317: 4315: 4313: 4309: 4305: 4297: 4294: 4292: 4289: 4287: 4286:constructible 4284: 4283: 4282: 4279: 4277: 4274: 4272: 4269: 4267: 4264: 4262: 4259: 4257: 4254: 4252: 4249: 4247: 4244: 4242: 4239: 4237: 4234: 4232: 4229: 4227: 4224: 4222: 4219: 4218: 4216: 4214: 4209: 4201: 4198: 4196: 4193: 4191: 4188: 4186: 4183: 4181: 4178: 4176: 4173: 4172: 4170: 4166: 4163: 4161: 4158: 4157: 4156: 4153: 4151: 4148: 4146: 4143: 4141: 4138: 4136: 4132: 4128: 4126: 4123: 4119: 4116: 4115: 4114: 4111: 4110: 4107: 4104: 4102: 4098: 4088: 4085: 4083: 4080: 4078: 4075: 4073: 4070: 4068: 4065: 4063: 4060: 4056: 4053: 4052: 4051: 4048: 4044: 4039: 4038: 4037: 4034: 4033: 4031: 4029: 4025: 4017: 4014: 4012: 4009: 4007: 4004: 4003: 4002: 3999: 3997: 3994: 3992: 3989: 3987: 3984: 3982: 3979: 3977: 3974: 3972: 3969: 3968: 3966: 3964: 3963:Propositional 3960: 3954: 3951: 3949: 3946: 3944: 3941: 3939: 3936: 3934: 3931: 3929: 3926: 3922: 3919: 3918: 3917: 3914: 3912: 3909: 3907: 3904: 3902: 3899: 3897: 3894: 3892: 3891:Logical truth 3889: 3887: 3884: 3883: 3881: 3879: 3875: 3872: 3870: 3866: 3860: 3857: 3855: 3852: 3850: 3847: 3845: 3842: 3840: 3837: 3835: 3831: 3827: 3823: 3821: 3818: 3816: 3813: 3811: 3807: 3804: 3803: 3801: 3799: 3793: 3788: 3782: 3779: 3777: 3774: 3772: 3769: 3767: 3764: 3762: 3759: 3757: 3754: 3752: 3749: 3747: 3744: 3742: 3739: 3737: 3734: 3732: 3729: 3727: 3724: 3720: 3717: 3716: 3715: 3712: 3711: 3709: 3705: 3701: 3694: 3689: 3687: 3682: 3680: 3675: 3674: 3671: 3662: 3661: 3656: 3653: 3648: 3645: 3640: 3636: 3635: 3625: 3623:3-540-44085-2 3619: 3615: 3611: 3607: 3606: 3587: 3583: 3576: 3563:on 2013-01-23 3559: 3552: 3551: 3544: 3537: 3533: 3529: 3523: 3520:, p. 6, 3519: 3515: 3511: 3510:Rudin, Walter 3505: 3497: 3491: 3487: 3480: 3472: 3466: 3462: 3455: 3447: 3441: 3437: 3432: 3431: 3422: 3418: 3407: 3404: 3398: 3395: 3392: 3389: 3386: 3383: 3377: 3374: 3371: 3368: 3365: 3362: 3356: 3355:Convex subset 3353: 3352: 3332: 3326: 3320: 3314: 3291: 3288: 3285: 3277: 3258: 3247: 3243: 3239: 3220: 3217: 3214: 3203: 3202:partial order 3199: 3196: 3192: 3188: 3185:are given by 3184: 3183:join and meet 3180: 3176: 3175:partial order 3172: 3171: 3156: 3148: 3140: 3132: 3129: 3126: 3113: 3110: 3107: 3100: 3099: 3095: 3091: 3087: 3083: 3079: 3075: 3074: 3059: 3056: 3053: 3050: 3047: 3044: 3036: 3033: 3030: 3023: 3022: 3018: 3014: 3010: 3006: 3005: 2990: 2987: 2984: 2981: 2978: 2975: 2967: 2964: 2961: 2954: 2953: 2949: 2946: 2942: 2938: 2934: 2933: 2927: 2925: 2922: 2906: 2884: 2876: 2865: 2849: 2829: 2821: 2796: 2793: 2764: 2744: 2735: 2733: 2729: 2711: 2707: 2698: 2695:of which the 2682: 2677: 2669: 2666: 2663: 2652: 2634: 2630: 2609: 2606: 2603: 2583: 2579: 2573: 2569: 2565: 2562: 2559: 2554: 2550: 2546: 2541: 2537: 2532: 2528: 2525: 2505: 2502: 2499: 2476: 2473: 2470: 2459: 2455: 2434: 2426: 2423: 2415: 2411: 2407: 2388: 2382: 2366: 2353: 2350: 2347: 2344: 2336: 2333: 2330: 2307: 2277: 2274: 2271: 2263: 2260: 2257: 2234: 2216: 2215:partial order 2200: 2193: 2188: 2171: 2153: 2137: 2116: 2111: 2104: 2099: 2098: 2097: 2095: 2094:Euler diagram 2085: 2083: 2079: 2075: 2072: 2068: 2064: 2060: 2056: 2052: 2049: 2045: 2041: 2037: 2033: 2029: 2014: 2011: 2008: 2001:is true, and 1988: 1985: 1982: 1972: 1970: 1955: 1952: 1949: 1929: 1926: 1923: 1915: 1914: 1910: 1905: 1896: 1894: 1890: 1874: 1871: 1868: 1865: 1857: 1853: 1837: 1834: 1831: 1828: 1808: 1800: 1796: 1792: 1788: 1784: 1768: 1765: 1762: 1759: 1751: 1747: 1731: 1728: 1725: 1722: 1702: 1699: 1679: 1671: 1655: 1635: 1615: 1612: 1592: 1582: 1578: 1564: 1544: 1535: 1533: 1517: 1514: 1511: 1508: 1500: 1484: 1481: 1461: 1451: 1447: 1433: 1413: 1384: 1381: 1378: 1358: 1355: 1352: 1344: 1343: 1339: 1325: 1322: 1319: 1299: 1296: 1293: 1273: 1270: 1267: 1259: 1258: 1254: 1239: 1236: 1233: 1213: 1205: 1204: 1203:Irreflexivity 1200: 1199: 1196:Proper subset 1178: 1175: 1172: 1152: 1149: 1146: 1126: 1123: 1120: 1112: 1111: 1107: 1093: 1090: 1087: 1067: 1064: 1061: 1041: 1038: 1035: 1027: 1026: 1022: 1008: 1005: 1002: 982: 974: 973: 969: 968: 953: 950: 947: 944: 924: 921: 918: 898: 895: 892: 884: 875: 873: 869: 853: 850: 819: 798: 795: 792: 789: 782:, denoted by 781: 777: 773: 769: 765: 762: 747: 744: 741: 734:, denoted by 733: 729: 725: 721: 717: 714: 713: 712: 711: 710: 708: 704: 700: 696: 692: 688: 684: 663: 660: 657: 654: 647:, denoted by 646: 642: 638: 635: 620: 617: 614: 607:, denoted by 606: 602: 598: 595: 594: 593: 592: 591: 589: 585: 581: 577: 573: 563: 549: 546: 543: 540: 520: 516: 512: 509: 506: 500: 497: 494: 490: 486: 475: 456: 453: 450: 438: 435: 432: 421: 412: 408: 404: 401: 398: 394: 391: 390: 389: 376: 373: 370: 367: 359: 355: 349: 335: 332: 329: 320: 307: 303: 299: 296: 293: 287: 284: 281: 277: 273: 250: 247: 244: 235: 233: 229: 227: 222: 218: 214: 210: 206: 202: 198: 194: 190: 186: 185:proper subset 182: 178: 174: 170: 166: 162: 158: 154: 150: 146: 142: 138: 135: 115: 112: 109: 101: 97: 81: 78: 75: 67: 63: 59: 54: 53:Euler diagram 50: 44: 40: 33: 19: 6223: 6210: 6172: 6138: 6026:Georg Cantor 6021:Paul Bernays 5952:Morse–Kelley 5927: 5860: 5859:Subset  5858: 5806:hereditarily 5768:Venn diagram 5726:ordered pair 5641:Intersection 5585:Axiom schema 5408: 5206:Ultraproduct 5053:Model theory 5018:Independence 4954:Formal proof 4946:Proof theory 4929: 4902: 4859:real numbers 4831:second-order 4742:Substitution 4619:Metalanguage 4560:conservative 4533:Axiom schema 4477:Constructive 4447:Morse–Kelley 4413:Set theories 4392:Aleph number 4385:inaccessible 4291:Grothendieck 4175:intersection 4062:Higher-order 4050:Second-order 3996:Truth tables 3953:Venn diagram 3736:Formal proof 3658: 3613: 3610:Jech, Thomas 3603:Bibliography 3589:. Retrieved 3585: 3575: 3565:, retrieved 3558:the original 3549: 3543: 3513: 3504: 3485: 3479: 3460: 3454: 3429: 3421: 3406:Total subset 3275: 3245: 3187:intersection 3089: 3085: 3081: 3077: 3016: 3012: 3008: 2944: 2940: 2936: 2757:-subsets of 2736: 2731: 2696: 2653:-tuple from 2650: 2457: 2405: 2367: 2189: 2129: 2091: 2082:real numbers 2063:line segment 2047: 2043: 2040:prime number 2035: 2031: 1892: 1888: 1855: 1851: 1794: 1790: 1786: 1782: 1749: 1745: 1577:to indicate 1536: 1498: 1446:to indicate 1405: 1340: 1257:Transitivity 1255: 1201: 1110:Antisymmetry 1108: 1025:Transitivity 1023: 970: 871: 815: 779: 775: 771: 767: 763: 731: 727: 723: 719: 715: 706: 703:there exists 698: 690: 686: 682: 680: 644: 640: 636: 604: 600: 596: 587: 583: 575: 571: 569: 473: 417: 410: 406: 402: 396: 392: 357: 353: 351: 321: 236: 231: 225: 224: 220: 216: 212: 208: 204: 200: 196: 192: 188: 184: 180: 176: 172: 168: 164: 160: 156: 152: 144: 140: 136: 131: 99: 95: 65: 61: 57: 6274:existential 6051:Thomas Jech 5894:Alternative 5873:Uncountable 5827:Ultrafilter 5686:Cardinality 5590:replacement 5531:Determinacy 5316:Type theory 5264:undecidable 5196:Truth value 5083:equivalence 4762:non-logical 4375:Enumeration 4365:Isomorphism 4312:cardinality 4296:Von Neumann 4261:Ultrafilter 4226:Uncountable 4160:equivalence 4077:Quantifiers 4067:Fixed-point 4036:First-order 3916:Consistency 3901:Proposition 3878:Traditional 3849:Lindström's 3839:Compactness 3781:Type theory 3726:Cardinality 3518:McGraw-Hill 3094:cardinality 2921:transfinite 2454:cardinality 2250:defined by 2217:on the set 2076:The set of 2071:cardinality 2053:The set of 972:Reflexivity 197:containment 6046:Kurt Gödel 6031:Paul Cohen 5868:Transitive 5636:Identities 5620:Complement 5607:Operations 5568:Regularity 5536:projective 5499:Adjunction 5458:Set theory 5127:elementary 4820:arithmetic 4688:Quantifier 4666:functional 4538:Expression 4256:Transitive 4200:identities 4185:complement 4118:hereditary 4101:Set theory 3614:Set Theory 3591:2020-08-23 3567:2012-09-07 3413:References 3238:isomorphic 2864:set theory 2492:for which 1793:less than 1670:inequality 820:, written 709:), then: 566:Definition 234:elements. 163:is then a 6351:therefore 6339:therefore 6294:tautology 6258:universal 5979:Paradoxes 5899:Axiomatic 5878:Universal 5854:Singleton 5849:Recursive 5792:Countable 5787:Amorphous 5646:Power set 5563:Power set 5514:dependent 5509:countable 5398:Supertask 5301:Recursion 5259:decidable 5093:saturated 5071:of models 4994:deductive 4989:axiomatic 4909:Hilbert's 4896:Euclidean 4877:canonical 4800:axiomatic 4732:Signature 4661:Predicate 4550:Extension 4472:Ackermann 4397:Operation 4276:Universal 4266:Recursive 4241:Singleton 4236:Inhabited 4221:Countable 4211:Types of 4195:power set 4165:partition 4082:Predicate 4028:Predicate 3943:Syllogism 3933:Soundness 3906:Inference 3896:Tautology 3798:paradoxes 3660:MathWorld 3370:Mereology 3321:⊆ 3289:≤ 3221:⪯ 3130:∩ 3111:⊆ 3048:∪ 3034:⊆ 2979:∩ 2965:⊆ 2607:⊆ 2563:… 2404:of a set 2383:⁡ 2348:⊆ 2334:≤ 2275:⊆ 2268:⟺ 2261:≤ 2201:⊆ 2152:power set 2126:Power set 2030:The set { 2012:⊊ 1986:⊆ 1968:are true. 1953:⊊ 1927:⊆ 1869:⊂ 1858:, but if 1832:⊆ 1809:⊂ 1752:, but if 1726:≤ 1680:≤ 1656:⊂ 1636:⊆ 1613:⊋ 1593:⊊ 1565:⊃ 1545:⊂ 1512:⊂ 1482:⊇ 1462:⊆ 1434:⊃ 1414:⊂ 1397:is False. 1382:⊊ 1356:⊊ 1342:Asymmetry 1323:⊊ 1297:⊊ 1271:⊊ 1252:is False. 1237:⊊ 1150:⊆ 1124:⊆ 1091:⊆ 1065:⊆ 1039:⊆ 1006:⊆ 948:⊆ 922:⊆ 896:⊆ 868:vacuously 851:∅ 818:empty set 793:⊋ 745:⊊ 658:⊇ 618:⊆ 544:⊆ 510:∈ 504:⇒ 498:∈ 484:∀ 454:∈ 445:⇒ 436:∈ 371:⊆ 352:Let sets 333:⊆ 297:∈ 291:⇒ 285:∈ 271:∀ 248:⊆ 193:inclusion 143:of a set 113:⊇ 102:(denoted 79:⊆ 68:(denoted 6408:Category 6337:entails, 6323:entails, 6211:superset 5983:Problems 5887:Theories 5863:Superset 5839:Infinite 5668:Concepts 5548:Infinity 5465:Overview 5383:Logicism 5376:timeline 5352:Concrete 5211:Validity 5181:T-schema 5174:Kripke's 5169:Tarski's 5164:semantic 5154:Strength 5103:submodel 5098:spectrum 5066:function 4914:Tarski's 4903:Elements 4890:geometry 4846:Robinson 4767:variable 4752:function 4725:spectrum 4715:Sentence 4671:variable 4614:Language 4567:Relation 4528:Automata 4518:Alphabet 4502:language 4356:-jection 4334:codomain 4320:Function 4281:Universe 4251:Infinite 4155:Relation 3938:Validity 3928:Argument 3826:theorem, 3655:"Subset" 3612:(2002). 3582:"Subset" 3512:(1987), 3397:Subspace 3349:See also 2192:relation 1672:symbols 1452:superset 937:implies 776:superset 641:superset 590:, then: 165:superset 149:elements 18:Superset 6363:because 6227:  6206:implies 6194:implies 6176:  6142:  6117:Common 5921:General 5916:Zermelo 5822:subbase 5804: ( 5743:Forcing 5721:Element 5693: ( 5671:Methods 5558:Pairing 5325:Related 5122:Diagram 5020: ( 4999:Hilbert 4984:Systems 4979:Theorem 4857:of the 4802:systems 4582:Formula 4577:Grammar 4493: ( 4437:General 4150:Forcing 4135:Element 4055:Monadic 3830:paradox 3771:Theorem 3707:General 3644:Subsets 3536:0924157 3278:, then 3007:A set 2935:A set 1312:, then 1165:, then 1080:, then 693:is not 580:element 393:suppose 228:-subset 147:if all 55:showing 6325:proves 6221:  6170:  6136:  5812:Filter 5802:Finite 5738:Family 5681:Almost 5519:global 5504:Choice 5491:Axioms 5088:finite 4851:Skolem 4804:  4779:Theory 4747:Symbol 4737:String 4720:atomic 4597:ground 4592:closed 4587:atomic 4543:ground 4506:syntax 4402:binary 4329:domain 4246:Finite 4011:finite 3869:Logics 3828:  3776:Theory 3620:  3534:  3524:  3492:  3467:  3442:  3376:Region 3086:subset 3078:finite 3013:subset 2941:subset 2728:member 2649:) the 1789:, and 1583:proper 1579:proper 1448:subset 772:strict 768:proper 728:subset 724:strict 720:proper 701:(i.e. 689:, but 601:subset 141:subset 62:subset 6306:false 6144:& 5904:Naive 5834:Fuzzy 5797:Empty 5780:types 5731:tuple 5701:Class 5695:large 5656:Union 5573:Union 5078:Model 4826:Peano 4683:Proof 4523:Arity 4452:Naive 4339:image 4271:Fuzzy 4231:Empty 4180:union 4125:Class 3766:Model 3756:Lemma 3714:Axiom 3561:(PDF) 3554:(PDF) 3191:union 3084:is a 3011:is a 2939:is a 2919:is a 2726:is a 2452:(the 2412:—the 2213:is a 2086:power 2038:is a 1887:then 1850:then 1781:then 1744:then 1501:that 1371:then 1345:: If 1260:: If 1113:: If 1028:: If 766:is a 718:is a 695:equal 639:is a 599:is a 405:that 395:that 183:is a 139:is a 60:is a 6289:true 6245:nand 5817:base 5201:Type 5004:list 4808:list 4785:list 4774:Term 4708:rank 4602:open 4496:list 4308:Maps 4213:sets 4072:Free 4042:list 3792:list 3719:list 3618:ISBN 3522:ISBN 3490:ISBN 3465:ISBN 3440:ISBN 3189:and 3080:set 2503:< 2067:line 1942:and 1907:The 1797:(an 1763:< 1700:< 1692:and 1648:and 1605:and 1557:and 1474:and 1450:and 1426:and 1286:and 1139:and 1054:and 911:and 874:. 816:The 770:(or 722:(or 574:and 403:show 356:and 223:. A 175:and 6233:iff 6182:not 6148:and 5778:Set 4888:of 4870:of 4818:of 4350:Sur 4324:Map 4131:Ur- 4113:Set 3436:119 3236:is 3088:of 3015:of 2943:of 2730:of 2456:of 2416:of 1973:not 1534:). 1530:(a 843:or 778:of 730:of 697:to 681:If 643:of 603:of 582:of 570:If 215:or 199:). 187:of 167:of 151:of 134:set 64:of 6410:: 6224:or 6173:or 6160:or 6139:or 5274:NP 4898:: 4892:: 4822:: 4499:), 4354:Bi 4346:In 3657:. 3584:. 3532:MR 3530:, 3438:. 3076:A 2926:. 2734:. 2506:1. 2187:. 2096:: 2046:: 2034:: 1895:. 1791:is 1226:, 995:, 774:) 726:) 159:; 128:). 6359:∵ 6347:∴ 6333:⊨ 6319:⊢ 6308:, 6302:⊥ 6291:, 6285:⊤ 6269:∃ 6253:∀ 6241:| 6229:≡ 6219:↔ 6208:, 6202:⊃ 6190:→ 6178:~ 6168:¬ 6156:∨ 6134:∧ 6110:e 6103:t 6096:v 5861:· 5845:) 5841:( 5808:) 5697:) 5450:e 5443:t 5436:v 5354:/ 5269:P 5024:) 4810:) 4806:( 4703:∀ 4698:! 4693:∃ 4654:= 4649:↔ 4644:→ 4639:∧ 4634:∨ 4629:¬ 4352:/ 4348:/ 4322:/ 4133:) 4129:( 4016:∞ 4006:3 3794:) 3692:e 3685:t 3678:v 3663:. 3626:. 3594:. 3498:. 3473:. 3448:. 3333:. 3330:] 3327:b 3324:[ 3318:] 3315:a 3312:[ 3292:b 3286:a 3276:n 3262:] 3259:n 3256:[ 3246:n 3224:) 3218:, 3215:X 3212:( 3197:. 3157:. 3153:| 3149:A 3145:| 3141:= 3137:| 3133:B 3127:A 3123:| 3114:B 3108:A 3090:B 3082:A 3060:. 3057:B 3054:= 3051:B 3045:A 3037:B 3031:A 3017:B 3009:A 2991:. 2988:A 2985:= 2982:B 2976:A 2968:B 2962:A 2945:B 2937:A 2907:k 2885:k 2881:] 2877:A 2874:[ 2850:n 2830:k 2802:) 2797:k 2794:A 2789:( 2765:A 2745:k 2732:T 2712:i 2708:s 2697:i 2683:, 2678:k 2674:} 2670:1 2667:, 2664:0 2661:{ 2651:k 2635:S 2631:2 2610:S 2604:T 2584:, 2580:} 2574:k 2570:s 2566:, 2560:, 2555:2 2551:s 2547:, 2542:1 2538:s 2533:{ 2529:= 2526:S 2500:0 2480:} 2477:1 2474:, 2471:0 2468:{ 2458:S 2439:| 2435:S 2431:| 2427:= 2424:k 2406:S 2392:) 2389:S 2386:( 2378:P 2354:. 2351:A 2345:B 2337:B 2331:A 2311:) 2308:S 2305:( 2300:P 2278:B 2272:A 2264:B 2258:A 2238:) 2235:S 2232:( 2227:P 2175:) 2172:S 2169:( 2164:P 2138:S 2048:x 2044:x 2036:x 2032:x 2015:E 2009:D 1989:E 1983:D 1956:B 1950:A 1930:B 1924:A 1893:B 1889:A 1875:, 1872:B 1866:A 1856:B 1852:A 1838:, 1835:B 1829:A 1795:y 1787:y 1783:x 1769:, 1766:y 1760:x 1750:y 1746:x 1732:, 1729:y 1723:x 1703:. 1616:. 1518:. 1515:A 1509:A 1499:A 1485:. 1385:A 1379:B 1359:B 1353:A 1326:C 1320:A 1300:C 1294:B 1274:B 1268:A 1240:A 1234:A 1214:A 1191:. 1179:B 1176:= 1173:A 1153:A 1147:B 1127:B 1121:A 1094:C 1088:A 1068:C 1062:B 1042:B 1036:A 1009:A 1003:A 983:A 954:. 951:C 945:A 925:C 919:B 899:B 893:A 872:X 854:, 831:} 828:{ 799:. 796:A 790:B 780:A 764:B 748:B 742:A 732:B 716:A 707:A 699:B 691:A 687:B 683:A 664:. 661:A 655:B 645:A 637:B 621:B 615:A 605:B 597:A 588:B 584:A 576:B 572:A 550:, 547:B 541:A 521:, 517:) 513:B 507:x 501:A 495:x 491:( 487:x 474:c 460:) 457:B 451:c 448:( 442:) 439:A 433:c 430:( 413:. 411:B 407:a 397:a 377:, 374:B 368:A 358:B 354:A 336:B 330:A 308:. 304:) 300:B 294:x 288:A 282:x 278:( 274:x 251:B 245:A 232:k 226:k 221:B 217:A 213:A 209:B 205:B 201:A 189:B 181:A 177:B 173:A 169:A 161:B 157:B 153:A 145:B 137:A 116:A 110:B 100:A 96:B 82:B 76:A 66:B 58:A 45:. 34:. 20:)

Index

Superset
Superset (disambiguation)
horseshoe (symbol)
horseshoe (disambiguation)

Euler diagram
subset
set
elements
universal generalization
element
equal
there exists
empty set
vacuously

Reflexivity
Transitivity
Antisymmetry
Irreflexivity
Transitivity
Asymmetry
reflexive relation
inequality
irreflexive relation

regular polygons
prime number
natural numbers
rational numbers

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