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Index of a subgroup

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4769: 4391: 2323: 3895: 1574: 4251: 2195: 4080: 3996: 2522: 4141: 1946: 4577: 3515:), but in this case the whole subgroup is a normal subgroup. All members of a particular coset carry out the same permutation of these cosets, but in this case they represent only the 3-element 4192: 2184: 749: 504: 1130: 455: 3183:
is infinite, then all such sets are therefore infinite.) The set of these sets forms a group isomorphic to a subset of the group of permutations, so the number of these sets must divide
789: 4239: 2113: 1324: 2148: 1473: 4471: 1019: 4736: 1699: 2367: 2614: 2426: 361: 4432: 326: 589: 390: 412: 244: 1399: 1205: 2469: 1828: 1751: 1501: 2075: 1777: 3811: 3760: 3647: 2690: 2555: 2042: 840: 696: 287: 160: 96: 4688:
of two distinct index 2 subgroups (which are necessarily normal) gives the third point on the projective line containing these subgroups, and a group must contain
4682: 4612: 1428: 1357: 1234: 1163: 4650: 899: 871: 653: 623: 3920:
yields a third. This is a simple corollary of the above discussion (namely the projectivization of the vector space structure of the elementary abelian group
3679: 128: 4386:{\displaystyle \mathbf {P} (\operatorname {Hom} (G,\mathbf {Z} /p)):=(\operatorname {Hom} (G,\mathbf {Z} /p))\setminus \{0\})/(\mathbf {Z} /p)^{\times }} 1516: 2318:{\displaystyle \{(x,y)\mid x{\text{ is even}}\},\quad \{(x,y)\mid y{\text{ is even}}\},\quad {\text{and}}\quad \{(x,y)\mid x+y{\text{ is even}}\}} 4023: 4006:
does not act on this geometry, nor does it reflect any of the non-abelian structure (in both cases because the quotient is abelian).
3926: 2477: 4833: 4805: 4095: 3553:
There are three important normal subgroups of prime power index, each being the smallest normal subgroup in a certain class:
1878: 3391: 4812: 4786: 4009:
However, it is an elementary result, which can be seen concretely as follows: the set of normal subgroups of a given index
592: 4486: 4149: 4874: 4852: 4819: 2159: 705: 460: 3512: 1048: 417: 754: 4801: 4201: 4790: 2086: 1262: 2121: 1446: 4437: 3543: 943: 4912: 4691: 3316:
is 5, the index cannot be 15 even though this divides 5!, because there is no subgroup of order 15 in S
1638: 1587: 2343: 2560: 2372: 335: 4407: 303: 3581: 2081: 1706: 524: 370: 395: 184: 4826: 4779: 3913: 2624: 1362: 1168: 3547: 2435: 3890:{\displaystyle \mathbf {E} ^{p}(G)\supseteq \mathbf {A} ^{p}(G)\supseteq \mathbf {O} ^{p}(G).} 1797: 1720: 1486: 4931: 3501: 2050: 1756: 4685: 3917: 3738: 3625: 2659: 2533: 2020: 1610: 809: 665: 364: 256: 175: 133: 65: 4901: 4658: 4588: 3395: 1404: 1333: 1210: 1139: 8: 4629: 3912:
An elementary observation is that one cannot have exactly 2 subgroups of index 2, as the
3422: 1622: 876: 848: 628: 598: 3355:
and also the left coset, so the two are identical.) More generally, a subgroup of index
4883: 3508: 3278:!, but must satisfy other criteria as well. Since the normal subgroup is a subgroup of 2154: 4738:
index 2 subgroups โ€“ it cannot contain exactly 2 or 4 index 2 subgroups, for instance.
3652: 101: 3516: 3426: 2015: 1591: 4014: 2116: 1569:{\displaystyle |G:\operatorname {ker} \;\varphi |=|\operatorname {im} \;\varphi |.} 1480: 250: 166:
is the disjoint union of the left cosets and because each left coset has the same
4623: 3478: 3299: 2752: 2709: 2693: 2045: 1715: 799: 699: 4869: 3901: 843: 4925: 2705: 1999: 414:, namely the set of even integers and the set of odd integers, so the index 4144: 2628: 2472: 2337: 1995: 1862: 1476: 518: 24: 4916: 3405:
is normal, and other properties of subgroups of prime index are given in (
4752: 3532: 3401:
An alternative proof of the result that a subgroup of index lowest prime
1994:
Note that a subgroup of lowest prime index may not exist, such as in any
1780: 1606: 167: 20: 3433:
subgroup (in fact it has three such) of order 8, and thus of index 3 in
3171:. Since the number of possible permutations of cosets is finite, namely 4905: 4887: 2528: 1839: 3343:. (We can arrive at this fact also by noting that all the elements of 4747: 4075:{\displaystyle \mathbf {P} (\operatorname {Hom} (G,\mathbf {Z} /p)).} 1953: 4768: 3139:(that is, for any coset), it shows that multiplying on the right by 2728:
which is realized for the trivial subgroup, or in fact any subgroup
329: 32: 3504:
also has 24 members and a subgroup of index 3 (this time it is a D
3536: 3274:
The index of the normal subgroup not only has to be a divisor of
1714:
As a special case of the orbit-stabilizer theorem, the number of
4194:
A non-trivial such map has as kernel a normal subgroup of index
3331:
of index 2 is a normal subgroup, because the normal subgroup of
3991:{\displaystyle G/\mathbf {E} ^{p}(G)\cong (\mathbf {Z} /p)^{k}} 2786:
can be taken to be the kernel of the natural homomorphism from
3167:
is finite or infinte. Now assume that it is the finite number
2517:{\displaystyle \mathbb {Z} ^{n}\to \mathbb {Z} /p\mathbb {Z} } 43: 4245:) does not change the kernel; thus one obtains a map from 3449:. Multiplying on the right any element of a right coset of 4476:
As a consequence, the number of normal subgroups of index
2794:. Let us explain this in more detail, using right cosets: 2790:
to the permutation group of the left (or right) cosets of
3383:
having no other prime factors. For example, the subgroup
3327:= 2 this gives the rather obvious result that a subgroup 4618:. Further, given two distinct normal subgroups of index 3526: 4136:{\displaystyle \operatorname {Hom} (G,\mathbf {Z} /p),} 3175:!, then there can only be a finite number of sets like 3143:
makes the same permutation of cosets as multiplying by
1941:{\displaystyle |G:\operatorname {Core} (H)|\leq |G:H|!} 3163:
What we have said so far applies whether the index of
4694: 4661: 4632: 4591: 4489: 4440: 4410: 4254: 4204: 4152: 4098: 4026: 3929: 3814: 3741: 3655: 3628: 2662: 2563: 2536: 2480: 2438: 2375: 2346: 2198: 2162: 2124: 2089: 2053: 2023: 1881: 1800: 1759: 1723: 1641: 1519: 1489: 1449: 1407: 1365: 1336: 1265: 1213: 1171: 1142: 1051: 946: 879: 851: 812: 757: 708: 668: 631: 601: 527: 463: 420: 398: 373: 338: 306: 259: 187: 136: 104: 68: 3390:
of the non-abelian group of order 21 is normal (see
4793:. Unsourced material may be challenged and removed. 4572:{\displaystyle (p^{k+1}-1)/(p-1)=1+p+\cdots +p^{k}} 3904:and the transfer homomorphism, as discussed there. 2954:which perform a given permutation on the cosets of 4730: 4676: 4644: 4606: 4571: 4465: 4426: 4400:subgroups. Conversely, a normal subgroup of index 4385: 4233: 4186: 4135: 4074: 3990: 3889: 3754: 3673: 3641: 3371:is finite) is necessarily normal, as the index of 2684: 2608: 2549: 2516: 2463: 2420: 2361: 2317: 2178: 2142: 2107: 2069: 2036: 1940: 1822: 1771: 1745: 1693: 1568: 1495: 1467: 1422: 1393: 1351: 1318: 1228: 1199: 1157: 1124: 1013: 893: 865: 834: 783: 743: 690: 647: 617: 583: 498: 449: 406: 384: 355: 320: 281: 238: 154: 122: 90: 2656:is said to be infinite. In this case, the index 1983:is normal, as the index of its core must also be 1690: 54:, or equivalently, the number of right cosets of 4923: 4187:{\displaystyle \mathbf {F} _{p}=\mathbf {Z} /p.} 3649:normal subgroup that contains the derived group 3542:and have interesting structure, as described at 3900:These groups have important connections to the 3697:-group (not necessarily elementary) onto which 2179:{\displaystyle \mathbb {Z} \oplus \mathbb {Z} } 3711:) is the intersection of all normal subgroups 3602:) is the intersection of all normal subgroups 3489:perform the same permutation of the cosets of 1401:is finite, then equality holds if and only if 1207:is finite, then equality holds if and only if 744:{\displaystyle |\mathbb {Z} :2\mathbb {Z} |=2} 499:{\displaystyle |\mathbb {Z} :n\mathbb {Z} |=n} 253:if some of them are infinite). Thus the index 3801:As these are weaker conditions on the groups 3363:is the smallest prime factor of the order of 2801:that leave all cosets the same form a group. 1971:is 2, or for a finite group the lowest prime 1125:{\displaystyle |G:H\cap K|\leq |G:H|\,|G:K|,} 702:that may be finite or infinite. For example, 4614:corresponds to no normal subgroups of index 4346: 4340: 3778:-group (not necessarily abelian) onto which 3485:. All elements from any particular coset of 2312: 2277: 2264: 2235: 2228: 2199: 450:{\displaystyle |\mathbb {Z} :2\mathbb {Z} |} 4085:In detail, the space of homomorphisms from 3477:, corresponding to the six elements of the 784:{\displaystyle |\mathbb {R} :\mathbb {Z} |} 4473:which shows that this map is a bijection. 4234:{\displaystyle (\mathbf {Z} /p)^{\times }} 3298:must also correspond to a subgroup of the 2732:of infinite cardinality less than that of 1998:of non-prime order, or more generally any 1554: 1534: 4853:Learn how and when to remove this message 4198:and multiplying the map by an element of 3187:!. Furthermore, it must be a multiple of 2510: 2497: 2483: 2349: 2172: 2164: 1099: 988: 772: 764: 726: 715: 481: 470: 438: 427: 400: 378: 349: 314: 3584:, and is the largest elementary abelian 3535:index are kernels of surjective maps to 2631:of index 2, which is necessarily normal. 4913:Subgroup of least prime index is normal 4434:up to a choice of "which coset maps to 3095:, as desired. Now we show that for any 2751:(finite or infinite) always contains a 4924: 3907: 3441:. This dihedral group has a 4-member D 3195:contains the same number of cosets of 2186:has three subgroups of index 2, namely 2108:{\displaystyle \operatorname {SO} (n)} 1319:{\displaystyle |H:H\cap K|\leq |G:K|,} 4917:Groupprops, The Group Properties Wiki 4902:Normality of subgroups of prime index 3527:Normal subgroups of prime power index 2762:), also of finite index. In fact, if 2143:{\displaystyle \operatorname {O} (n)} 1468:{\displaystyle \varphi \colon G\to H} 4791:adding citations to reliable sources 4762: 4466:{\displaystyle 1\in \mathbf {Z} /p,} 3457:gives a member of the same coset of 3018:. Assume that multiplying the coset 2716:has a countable number of cosets in 2644:has an infinite number of cosets in 1991:equals its core, i.e., it is normal. 1956:function; this is discussed further 1794:Similarly, the number of conjugates 4867: 3564:) is the intersection of all index 3406: 1869:satisfies the following inequality: 1507:is equal to the order of the image: 1014:{\displaystyle |G:K|=|G:H|\,|H:K|.} 13: 4731:{\displaystyle 0,1,3,7,15,\ldots } 2125: 363:be the subgroup consisting of the 14: 4943: 4895: 4875:The American Mathematical Monthly 4337: 3544:Focal subgroup theorem: Subgroups 2635: 1957: 1694:{\displaystyle |Gx|=|G:G_{x}|.\!} 289:measures the "relative sizes" of 178:of the two groups by the formula 4767: 4448: 4412: 4404:determines a non-trivial map to 4361: 4319: 4279: 4256: 4209: 4169: 4155: 4115: 4051: 4028: 3966: 3940: 3865: 3841: 3817: 3513:point groups in three dimensions 3392:List of small non-abelian groups 2362:{\displaystyle \mathbb {Z} ^{n}} 1963:As a corollary, if the index of 521:, the formula may be written as 16:Mathematics group theory concept 4778:needs additional citations for 4089:to the (cyclic) group of order 4017:, namely the projective space 3308:, the group of permutations of 2738: 2609:{\displaystyle (p^{n}-1)/(p-1)} 2421:{\displaystyle (p^{n}-1)/(p-1)} 2276: 2270: 2234: 356:{\displaystyle H=2\mathbb {Z} } 328:be the group of integers under 4535: 4523: 4515: 4490: 4427:{\displaystyle \mathbf {Z} /p} 4374: 4357: 4349: 4334: 4331: 4309: 4300: 4294: 4291: 4269: 4260: 4222: 4205: 4127: 4105: 4066: 4063: 4041: 4032: 3979: 3962: 3956: 3950: 3881: 3875: 3857: 3851: 3833: 3827: 3805:one obtains the containments 3668: 3656: 3496:On the other hand, the group T 3351:constitute the right coset of 3339:and therefore be identical to 2678: 2664: 2603: 2591: 2583: 2564: 2493: 2458: 2439: 2415: 2403: 2395: 2376: 2292: 2280: 2250: 2238: 2214: 2202: 2137: 2131: 2102: 2096: 1931: 1917: 1909: 1905: 1899: 1883: 1683: 1662: 1654: 1643: 1559: 1547: 1539: 1521: 1459: 1387: 1367: 1309: 1295: 1287: 1267: 1193: 1173: 1115: 1101: 1095: 1081: 1073: 1053: 1004: 990: 984: 970: 962: 948: 873:, since the underlying set of 828: 814: 777: 759: 731: 710: 684: 670: 641: 633: 611: 603: 577: 569: 559: 551: 543: 529: 486: 465: 443: 422: 321:{\displaystyle G=\mathbb {Z} } 275: 261: 232: 224: 219: 205: 197: 189: 174:, the index is related to the 149: 137: 117: 105: 84: 70: 1: 4870:"On Subgroups of Prime Index" 4758: 3412: 3247:. Since this is true for any 3135:. Since this is true for any 2696:. For example, the index of 1838:is equal to the index of the 1779:is equal to the index of the 1621:is equal to the index of the 912: 842:is equal to the order of the 584:{\displaystyle |G:H|=|G|/|H|} 385:{\displaystyle 2\mathbb {Z} } 249:(interpret the quantities as 3727:is a (possibly non-abelian) 3445:subgroup, which we may call 3119:. This is because the coset 3026:gives elements of the coset 3022:on the right by elements of 407:{\displaystyle \mathbb {Z} } 239:{\displaystyle |G|=|G:H||H|} 7: 4741: 4143:is a vector space over the 3312:objects. So for example if 2747:of finite index in a group 2008: 1394:{\displaystyle |H:H\cap K|} 1200:{\displaystyle |G:H\cap K|} 10: 4948: 3473:. There are six cosets of 3425:has 24 elements. It has a 3255:must be a member of A, so 2981:First let us show that if 2950:be the set of elements of 1975:that divides the order of 4868:Lam, T. Y. (March 2004), 3693:) is the largest abelian 2992:, then any other element 2720:. Note that the index of 2464:{\displaystyle (p^{n}-1)} 1952:where ! denotes the 506:for any positive integer 3582:elementary abelian group 3396:Frobenius group#Examples 2774:will be some divisor of 2724:is at most the order of 2082:special orthogonal group 1823:{\displaystyle gHg^{-1}} 1746:{\displaystyle gxg^{-1}} 1707:orbit-stabilizer theorem 1496:{\displaystyle \varphi } 1479:, then the index of the 901:is the set of cosets of 4241:(a non-zero number mod 3790:) is also known as the 3290:times its index inside 3199:. Finally, if for some 2942:Let us call this group 2712:, depending on whether 2625:infinite dihedral group 2432:, corresponding to the 457:is 2. More generally, 62:. The index is denoted 42:is the number of left 4732: 4678: 4646: 4608: 4573: 4467: 4428: 4387: 4235: 4188: 4137: 4076: 3992: 3891: 3756: 3675: 3643: 3548:focal subgroup theorem 3437:, which we shall call 3379:! and thus must equal 3271:is a normal subgroup. 3239:(by the definition of 3191:because each coset of 3115:will be an element of 2686: 2610: 2551: 2518: 2465: 2422: 2363: 2319: 2180: 2144: 2109: 2071: 2070:{\displaystyle S_{n},} 2038: 1942: 1824: 1773: 1772:{\displaystyle x\in G} 1747: 1695: 1570: 1497: 1469: 1424: 1395: 1353: 1320: 1230: 1201: 1159: 1126: 1015: 895: 867: 836: 785: 745: 692: 649: 619: 585: 500: 451: 408: 386: 357: 322: 283: 240: 156: 124: 92: 4802:"Index of a subgroup" 4733: 4679: 4647: 4609: 4574: 4468: 4429: 4388: 4236: 4189: 4138: 4077: 3993: 3892: 3757: 3755:{\displaystyle p^{k}} 3676: 3644: 3642:{\displaystyle p^{k}} 3502:pyritohedral symmetry 3335:must have index 2 in 2687: 2685:{\displaystyle |G:H|} 2611: 2552: 2550:{\displaystyle F_{n}} 2519: 2466: 2423: 2364: 2320: 2181: 2150:, and thus is normal. 2145: 2110: 2072: 2039: 2037:{\displaystyle A_{n}} 1943: 1825: 1774: 1748: 1705:This is known as the 1696: 1571: 1498: 1470: 1425: 1396: 1354: 1321: 1231: 1202: 1160: 1127: 1016: 896: 868: 837: 835:{\displaystyle |G:N|} 786: 746: 693: 691:{\displaystyle |G:H|} 650: 620: 586: 501: 452: 409: 387: 358: 323: 284: 282:{\displaystyle |G:H|} 241: 157: 155:{\displaystyle (G:H)} 125: 93: 91:{\displaystyle |G:H|} 4787:improve this article 4692: 4686:symmetric difference 4677:{\displaystyle p=2,} 4659: 4630: 4607:{\displaystyle k=-1} 4589: 4487: 4438: 4408: 4252: 4202: 4150: 4096: 4024: 3927: 3918:symmetric difference 3812: 3739: 3653: 3626: 3531:Normal subgroups of 3073:, or in other words 2962:is a right coset of 2778:! and a multiple of 2770:, then the index of 2660: 2648:, then the index of 2561: 2534: 2478: 2436: 2373: 2344: 2196: 2160: 2122: 2087: 2051: 2021: 1879: 1798: 1757: 1721: 1639: 1517: 1487: 1447: 1423:{\displaystyle HK=G} 1405: 1363: 1352:{\displaystyle HK=G} 1334: 1263: 1229:{\displaystyle HK=G} 1211: 1169: 1158:{\displaystyle HK=G} 1140: 1049: 944: 877: 849: 810: 755: 706: 666: 629: 599: 525: 461: 418: 396: 371: 336: 304: 257: 185: 134: 102: 66: 4645:{\displaystyle p+1} 3908:Geometric structure 3423:octahedral symmetry 2616:subgroups of index 2428:subgroups of index 2332:More generally, if 2115:has index 2 in the 2077:and thus is normal. 2044:has index 2 in the 1861:, the index of the 894:{\displaystyle G/N} 866:{\displaystyle G/N} 648:{\displaystyle |G|} 618:{\displaystyle |H|} 4728: 4674: 4642: 4604: 4569: 4463: 4424: 4383: 4231: 4184: 4133: 4072: 3988: 3887: 3795:-residual subgroup 3762:normal subgroup): 3752: 3671: 3639: 3588:-group onto which 3568:normal subgroups; 3546:and elaborated at 3509:prismatic symmetry 2682: 2606: 2547: 2514: 2461: 2418: 2359: 2315: 2176: 2155:free abelian group 2140: 2105: 2067: 2034: 1938: 1820: 1769: 1743: 1691: 1566: 1493: 1465: 1420: 1391: 1349: 1316: 1226: 1197: 1155: 1122: 1011: 891: 863: 832: 781: 741: 688: 645: 615: 593:Lagrange's theorem 581: 496: 447: 404: 392:has two cosets in 382: 353: 318: 279: 236: 152: 120: 88: 4863: 4862: 4855: 4837: 3774:) is the largest 3523:symmetric group. 3519:in the 6-member S 3517:alternating group 3453:by an element of 3160: 3159: 2939: 2938: 2310: 2274: 2262: 2226: 2016:alternating group 1857:is a subgroup of 1330:with equality if 1249:are subgroups of 1241:Equivalently, if 1136:with equality if 1035:are subgroups of 930:is a subgroup of 922:is a subgroup of 591:, and it implies 300:For example, let 4939: 4890: 4858: 4851: 4847: 4844: 4838: 4836: 4795: 4771: 4763: 4737: 4735: 4734: 4729: 4683: 4681: 4680: 4675: 4652:such subgroups. 4651: 4649: 4648: 4643: 4613: 4611: 4610: 4605: 4578: 4576: 4575: 4570: 4568: 4567: 4522: 4508: 4507: 4472: 4470: 4469: 4464: 4456: 4451: 4433: 4431: 4430: 4425: 4420: 4415: 4396:to normal index 4392: 4390: 4389: 4384: 4382: 4381: 4369: 4364: 4356: 4327: 4322: 4287: 4282: 4259: 4240: 4238: 4237: 4232: 4230: 4229: 4217: 4212: 4193: 4191: 4190: 4185: 4177: 4172: 4164: 4163: 4158: 4142: 4140: 4139: 4134: 4123: 4118: 4081: 4079: 4078: 4073: 4059: 4054: 4031: 4015:projective space 3997: 3995: 3994: 3989: 3987: 3986: 3974: 3969: 3949: 3948: 3943: 3937: 3896: 3894: 3893: 3888: 3874: 3873: 3868: 3850: 3849: 3844: 3826: 3825: 3820: 3761: 3759: 3758: 3753: 3751: 3750: 3680: 3678: 3677: 3674:{\displaystyle } 3672: 3648: 3646: 3645: 3640: 3638: 3637: 3347:that are not in 3147:, and therefore 2970: 2969: 2805: 2804: 2797:The elements of 2691: 2689: 2688: 2683: 2681: 2667: 2615: 2613: 2612: 2607: 2590: 2576: 2575: 2556: 2554: 2553: 2548: 2546: 2545: 2523: 2521: 2520: 2515: 2513: 2505: 2500: 2492: 2491: 2486: 2470: 2468: 2467: 2462: 2451: 2450: 2427: 2425: 2424: 2419: 2402: 2388: 2387: 2368: 2366: 2365: 2360: 2358: 2357: 2352: 2324: 2322: 2321: 2316: 2311: 2308: 2275: 2272: 2263: 2260: 2227: 2224: 2185: 2183: 2182: 2177: 2175: 2167: 2149: 2147: 2146: 2141: 2117:orthogonal group 2114: 2112: 2111: 2106: 2076: 2074: 2073: 2068: 2063: 2062: 2043: 2041: 2040: 2035: 2033: 2032: 1947: 1945: 1944: 1939: 1934: 1920: 1912: 1886: 1829: 1827: 1826: 1821: 1819: 1818: 1778: 1776: 1775: 1770: 1752: 1750: 1749: 1744: 1742: 1741: 1700: 1698: 1697: 1692: 1686: 1681: 1680: 1665: 1657: 1646: 1575: 1573: 1572: 1567: 1562: 1550: 1542: 1524: 1502: 1500: 1499: 1494: 1474: 1472: 1471: 1466: 1429: 1427: 1426: 1421: 1400: 1398: 1397: 1392: 1390: 1370: 1358: 1356: 1355: 1350: 1325: 1323: 1322: 1317: 1312: 1298: 1290: 1270: 1235: 1233: 1232: 1227: 1206: 1204: 1203: 1198: 1196: 1176: 1164: 1162: 1161: 1156: 1131: 1129: 1128: 1123: 1118: 1104: 1098: 1084: 1076: 1056: 1020: 1018: 1017: 1012: 1007: 993: 987: 973: 965: 951: 900: 898: 897: 892: 887: 872: 870: 869: 864: 859: 841: 839: 838: 833: 831: 817: 790: 788: 787: 782: 780: 775: 767: 762: 750: 748: 747: 742: 734: 729: 718: 713: 697: 695: 694: 689: 687: 673: 654: 652: 651: 646: 644: 636: 624: 622: 621: 616: 614: 606: 590: 588: 587: 582: 580: 572: 567: 562: 554: 546: 532: 505: 503: 502: 497: 489: 484: 473: 468: 456: 454: 453: 448: 446: 441: 430: 425: 413: 411: 410: 405: 403: 391: 389: 388: 383: 381: 362: 360: 359: 354: 352: 327: 325: 324: 319: 317: 288: 286: 285: 280: 278: 264: 251:cardinal numbers 245: 243: 242: 237: 235: 227: 222: 208: 200: 192: 161: 159: 158: 153: 129: 127: 126: 123:{\displaystyle } 121: 97: 95: 94: 89: 87: 73: 4947: 4946: 4942: 4941: 4940: 4938: 4937: 4936: 4922: 4921: 4898: 4893: 4859: 4848: 4842: 4839: 4796: 4794: 4784: 4772: 4761: 4744: 4693: 4690: 4689: 4660: 4657: 4656: 4631: 4628: 4627: 4624:projective line 4590: 4587: 4586: 4563: 4559: 4518: 4497: 4493: 4488: 4485: 4484: 4452: 4447: 4439: 4436: 4435: 4416: 4411: 4409: 4406: 4405: 4377: 4373: 4365: 4360: 4352: 4323: 4318: 4283: 4278: 4255: 4253: 4250: 4249: 4225: 4221: 4213: 4208: 4203: 4200: 4199: 4173: 4168: 4159: 4154: 4153: 4151: 4148: 4147: 4119: 4114: 4097: 4094: 4093: 4055: 4050: 4027: 4025: 4022: 4021: 3982: 3978: 3970: 3965: 3944: 3939: 3938: 3933: 3928: 3925: 3924: 3910: 3902:Sylow subgroups 3869: 3864: 3863: 3845: 3840: 3839: 3821: 3816: 3815: 3813: 3810: 3809: 3746: 3742: 3740: 3737: 3736: 3654: 3651: 3650: 3633: 3629: 3627: 3624: 3623: 3529: 3522: 3507: 3499: 3484: 3479:symmetric group 3444: 3432: 3415: 3389: 3323:In the case of 3319: 3307: 3300:symmetric group 3294:. Its index in 3282:, its index in 3219:, then for any 3161: 3123:is the same as 3086: 3079: 3064: 3058: 3047: 3036: 3009: 2998: 2987: 2975: 2940: 2922: 2912: 2905: 2898: 2880: 2870: 2810: 2753:normal subgroup 2741: 2694:cardinal number 2677: 2663: 2661: 2658: 2657: 2638: 2629:cyclic subgroup 2586: 2571: 2567: 2562: 2559: 2558: 2541: 2537: 2535: 2532: 2531: 2527:Similarly, the 2509: 2501: 2496: 2487: 2482: 2481: 2479: 2476: 2475: 2446: 2442: 2437: 2434: 2433: 2398: 2383: 2379: 2374: 2371: 2370: 2353: 2348: 2347: 2345: 2342: 2341: 2307: 2271: 2259: 2223: 2197: 2194: 2193: 2171: 2163: 2161: 2158: 2157: 2123: 2120: 2119: 2088: 2085: 2084: 2058: 2054: 2052: 2049: 2048: 2046:symmetric group 2028: 2024: 2022: 2019: 2018: 2011: 1930: 1916: 1908: 1882: 1880: 1877: 1876: 1811: 1807: 1799: 1796: 1795: 1758: 1755: 1754: 1734: 1730: 1722: 1719: 1718: 1682: 1676: 1672: 1661: 1653: 1642: 1640: 1637: 1636: 1558: 1546: 1538: 1520: 1518: 1515: 1514: 1488: 1485: 1484: 1448: 1445: 1444: 1443:are groups and 1406: 1403: 1402: 1386: 1366: 1364: 1361: 1360: 1335: 1332: 1331: 1308: 1294: 1286: 1266: 1264: 1261: 1260: 1212: 1209: 1208: 1192: 1172: 1170: 1167: 1166: 1141: 1138: 1137: 1114: 1100: 1094: 1080: 1072: 1052: 1050: 1047: 1046: 1003: 989: 983: 969: 961: 947: 945: 942: 941: 915: 883: 878: 875: 874: 855: 850: 847: 846: 827: 813: 811: 808: 807: 800:normal subgroup 776: 771: 763: 758: 756: 753: 752: 730: 725: 714: 709: 707: 704: 703: 700:cardinal number 683: 669: 667: 664: 663: 640: 632: 630: 627: 626: 610: 602: 600: 597: 596: 576: 568: 563: 558: 550: 542: 528: 526: 523: 522: 485: 480: 469: 464: 462: 459: 458: 442: 437: 426: 421: 419: 416: 415: 399: 397: 394: 393: 377: 372: 369: 368: 348: 337: 334: 333: 313: 305: 302: 301: 274: 260: 258: 255: 254: 231: 223: 218: 204: 196: 188: 186: 183: 182: 135: 132: 131: 103: 100: 99: 83: 69: 67: 64: 63: 23:, specifically 17: 12: 11: 5: 4945: 4935: 4934: 4920: 4919: 4909: 4897: 4896:External links 4894: 4892: 4891: 4882:(3): 256โ€“258, 4864: 4861: 4860: 4775: 4773: 4766: 4760: 4757: 4756: 4755: 4750: 4743: 4740: 4727: 4724: 4721: 4718: 4715: 4712: 4709: 4706: 4703: 4700: 4697: 4673: 4670: 4667: 4664: 4641: 4638: 4635: 4626:consisting of 4622:one obtains a 4603: 4600: 4597: 4594: 4580: 4579: 4566: 4562: 4558: 4555: 4552: 4549: 4546: 4543: 4540: 4537: 4534: 4531: 4528: 4525: 4521: 4517: 4514: 4511: 4506: 4503: 4500: 4496: 4492: 4462: 4459: 4455: 4450: 4446: 4443: 4423: 4419: 4414: 4394: 4393: 4380: 4376: 4372: 4368: 4363: 4359: 4355: 4351: 4348: 4345: 4342: 4339: 4336: 4333: 4330: 4326: 4321: 4317: 4314: 4311: 4308: 4305: 4302: 4299: 4296: 4293: 4290: 4286: 4281: 4277: 4274: 4271: 4268: 4265: 4262: 4258: 4228: 4224: 4220: 4216: 4211: 4207: 4183: 4180: 4176: 4171: 4167: 4162: 4157: 4132: 4129: 4126: 4122: 4117: 4113: 4110: 4107: 4104: 4101: 4083: 4082: 4071: 4068: 4065: 4062: 4058: 4053: 4049: 4046: 4043: 4040: 4037: 4034: 4030: 4000: 3999: 3985: 3981: 3977: 3973: 3968: 3964: 3961: 3958: 3955: 3952: 3947: 3942: 3936: 3932: 3909: 3906: 3898: 3897: 3886: 3883: 3880: 3877: 3872: 3867: 3862: 3859: 3856: 3853: 3848: 3843: 3838: 3835: 3832: 3829: 3824: 3819: 3799: 3798: 3749: 3745: 3731:-group (i.e., 3702: 3670: 3667: 3664: 3661: 3658: 3636: 3632: 3618:-group (i.e., 3614:is an abelian 3593: 3528: 3525: 3520: 3505: 3497: 3482: 3442: 3430: 3414: 3411: 3387: 3317: 3303: 3267:and therefore 3158: 3157: 3084: 3077: 3062: 3056: 3045: 3034: 3007: 2996: 2985: 2977: 2976: 2973: 2968: 2937: 2936: 2920: 2910: 2903: 2896: 2878: 2868: 2812: 2811: 2808: 2803: 2740: 2737: 2692:is actually a 2680: 2676: 2673: 2670: 2666: 2637: 2636:Infinite index 2634: 2633: 2632: 2621: 2605: 2602: 2599: 2596: 2593: 2589: 2585: 2582: 2579: 2574: 2570: 2566: 2544: 2540: 2525: 2512: 2508: 2504: 2499: 2495: 2490: 2485: 2460: 2457: 2454: 2449: 2445: 2441: 2417: 2414: 2411: 2408: 2405: 2401: 2397: 2394: 2391: 2386: 2382: 2378: 2356: 2351: 2329: 2328: 2327: 2326: 2314: 2306: 2303: 2300: 2297: 2294: 2291: 2288: 2285: 2282: 2279: 2269: 2266: 2258: 2255: 2252: 2249: 2246: 2243: 2240: 2237: 2233: 2230: 2222: 2219: 2216: 2213: 2210: 2207: 2204: 2201: 2188: 2187: 2174: 2170: 2166: 2151: 2139: 2136: 2133: 2130: 2127: 2104: 2101: 2098: 2095: 2092: 2078: 2066: 2061: 2057: 2031: 2027: 2010: 2007: 2006: 2005: 2004: 2003: 1992: 1950: 1949: 1948: 1937: 1933: 1929: 1926: 1923: 1919: 1915: 1911: 1907: 1904: 1901: 1898: 1895: 1892: 1889: 1885: 1871: 1870: 1851: 1830:of a subgroup 1817: 1814: 1810: 1806: 1803: 1792: 1768: 1765: 1762: 1753:of an element 1740: 1737: 1733: 1729: 1726: 1711: 1710: 1703: 1702: 1701: 1689: 1685: 1679: 1675: 1671: 1668: 1664: 1660: 1656: 1652: 1649: 1645: 1631: 1630: 1579: 1578: 1577: 1576: 1565: 1561: 1557: 1553: 1549: 1545: 1541: 1537: 1533: 1530: 1527: 1523: 1509: 1508: 1492: 1464: 1461: 1458: 1455: 1452: 1432: 1431: 1419: 1416: 1413: 1410: 1389: 1385: 1382: 1379: 1376: 1373: 1369: 1348: 1345: 1342: 1339: 1328: 1327: 1326: 1315: 1311: 1307: 1304: 1301: 1297: 1293: 1289: 1285: 1282: 1279: 1276: 1273: 1269: 1255: 1254: 1238: 1237: 1225: 1222: 1219: 1216: 1195: 1191: 1188: 1185: 1182: 1179: 1175: 1154: 1151: 1148: 1145: 1134: 1133: 1132: 1121: 1117: 1113: 1110: 1107: 1103: 1097: 1093: 1090: 1087: 1083: 1079: 1075: 1071: 1068: 1065: 1062: 1059: 1055: 1041: 1040: 1024: 1023: 1022: 1021: 1010: 1006: 1002: 999: 996: 992: 986: 982: 979: 976: 972: 968: 964: 960: 957: 954: 950: 936: 935: 914: 911: 890: 886: 882: 862: 858: 854: 844:quotient group 830: 826: 823: 820: 816: 779: 774: 770: 766: 761: 740: 737: 733: 728: 724: 721: 717: 712: 686: 682: 679: 676: 672: 643: 639: 635: 613: 609: 605: 579: 575: 571: 566: 561: 557: 553: 549: 545: 541: 538: 535: 531: 495: 492: 488: 483: 479: 476: 472: 467: 445: 440: 436: 433: 429: 424: 402: 380: 376: 351: 347: 344: 341: 316: 312: 309: 277: 273: 270: 267: 263: 247: 246: 234: 230: 226: 221: 217: 214: 211: 207: 203: 199: 195: 191: 151: 148: 145: 142: 139: 119: 116: 113: 110: 107: 86: 82: 79: 76: 72: 15: 9: 6: 4: 3: 2: 4944: 4933: 4930: 4929: 4927: 4918: 4914: 4910: 4907: 4903: 4900: 4899: 4889: 4885: 4881: 4877: 4876: 4871: 4866: 4865: 4857: 4854: 4846: 4835: 4832: 4828: 4825: 4821: 4818: 4814: 4811: 4807: 4804: โ€“  4803: 4799: 4798:Find sources: 4792: 4788: 4782: 4781: 4776:This article 4774: 4770: 4765: 4764: 4754: 4751: 4749: 4746: 4745: 4739: 4725: 4722: 4719: 4716: 4713: 4710: 4707: 4704: 4701: 4698: 4695: 4687: 4671: 4668: 4665: 4662: 4653: 4639: 4636: 4633: 4625: 4621: 4617: 4601: 4598: 4595: 4592: 4585: 4564: 4560: 4556: 4553: 4550: 4547: 4544: 4541: 4538: 4532: 4529: 4526: 4519: 4512: 4509: 4504: 4501: 4498: 4494: 4483: 4482: 4481: 4479: 4474: 4460: 4457: 4453: 4444: 4441: 4421: 4417: 4403: 4399: 4378: 4370: 4366: 4353: 4343: 4328: 4324: 4315: 4312: 4306: 4303: 4297: 4288: 4284: 4275: 4272: 4266: 4263: 4248: 4247: 4246: 4244: 4226: 4218: 4214: 4197: 4181: 4178: 4174: 4165: 4160: 4146: 4130: 4124: 4120: 4111: 4108: 4102: 4099: 4092: 4088: 4069: 4060: 4056: 4047: 4044: 4038: 4035: 4020: 4019: 4018: 4016: 4012: 4007: 4005: 4002:and further, 3983: 3975: 3971: 3959: 3953: 3945: 3934: 3930: 3923: 3922: 3921: 3919: 3915: 3905: 3903: 3884: 3878: 3870: 3860: 3854: 3846: 3836: 3830: 3822: 3808: 3807: 3806: 3804: 3796: 3794: 3789: 3785: 3781: 3777: 3773: 3769: 3765: 3747: 3743: 3734: 3730: 3726: 3722: 3718: 3714: 3710: 3706: 3703: 3700: 3696: 3692: 3688: 3684: 3665: 3662: 3659: 3634: 3630: 3621: 3617: 3613: 3609: 3605: 3601: 3597: 3594: 3591: 3587: 3583: 3579: 3575: 3571: 3567: 3563: 3559: 3556: 3555: 3554: 3551: 3549: 3545: 3541: 3539: 3534: 3524: 3518: 3514: 3510: 3503: 3494: 3492: 3488: 3480: 3476: 3472: 3469:is normal in 3468: 3464: 3460: 3456: 3452: 3448: 3440: 3436: 3428: 3424: 3420: 3410: 3408: 3404: 3399: 3397: 3393: 3386: 3382: 3378: 3374: 3370: 3366: 3362: 3358: 3354: 3350: 3346: 3342: 3338: 3334: 3330: 3326: 3321: 3315: 3311: 3306: 3301: 3297: 3293: 3289: 3285: 3281: 3277: 3272: 3270: 3266: 3262: 3259:implies that 3258: 3254: 3250: 3246: 3242: 3238: 3234: 3230: 3226: 3222: 3218: 3214: 3210: 3206: 3202: 3198: 3194: 3190: 3186: 3182: 3178: 3174: 3170: 3166: 3156: 3154: 3150: 3146: 3142: 3138: 3134: 3130: 3126: 3122: 3118: 3114: 3110: 3106: 3102: 3098: 3094: 3090: 3083: 3076: 3072: 3068: 3061: 3055: 3051: 3044: 3040: 3033: 3029: 3025: 3021: 3017: 3013: 3006: 3002: 2995: 2991: 2984: 2979: 2978: 2972: 2971: 2967: 2965: 2961: 2957: 2953: 2949: 2945: 2935: 2933: 2929: 2925: 2919: 2915: 2909: 2902: 2895: 2891: 2887: 2883: 2877: 2873: 2867: 2863: 2859: 2855: 2851: 2847: 2843: 2839: 2835: 2832:and likewise 2831: 2827: 2823: 2819: 2814: 2813: 2807: 2806: 2802: 2800: 2795: 2793: 2789: 2785: 2781: 2777: 2773: 2769: 2765: 2761: 2757: 2754: 2750: 2746: 2736: 2735: 2731: 2727: 2723: 2719: 2715: 2711: 2707: 2703: 2699: 2695: 2674: 2671: 2668: 2655: 2651: 2647: 2643: 2630: 2626: 2622: 2619: 2600: 2597: 2594: 2587: 2580: 2577: 2572: 2568: 2542: 2538: 2530: 2526: 2506: 2502: 2488: 2474: 2473:homomorphisms 2455: 2452: 2447: 2443: 2431: 2412: 2409: 2406: 2399: 2392: 2389: 2384: 2380: 2354: 2339: 2335: 2331: 2330: 2309: is even 2304: 2301: 2298: 2295: 2289: 2286: 2283: 2267: 2261: is even 2256: 2253: 2247: 2244: 2241: 2231: 2225: is even 2220: 2217: 2211: 2208: 2205: 2192: 2191: 2190: 2189: 2168: 2156: 2152: 2134: 2128: 2118: 2099: 2093: 2090: 2083: 2079: 2064: 2059: 2055: 2047: 2029: 2025: 2017: 2013: 2012: 2001: 2000:perfect group 1997: 1993: 1990: 1986: 1982: 1978: 1974: 1970: 1966: 1962: 1961: 1959: 1955: 1951: 1935: 1927: 1924: 1921: 1913: 1902: 1896: 1893: 1890: 1887: 1875: 1874: 1873: 1872: 1868: 1864: 1860: 1856: 1852: 1849: 1845: 1841: 1837: 1833: 1815: 1812: 1808: 1804: 1801: 1793: 1790: 1786: 1782: 1766: 1763: 1760: 1738: 1735: 1731: 1727: 1724: 1717: 1713: 1712: 1708: 1704: 1687: 1677: 1673: 1669: 1666: 1658: 1650: 1647: 1635: 1634: 1633: 1632: 1628: 1624: 1620: 1616: 1612: 1608: 1604: 1601: โˆˆ  1600: 1596: 1593: 1589: 1585: 1581: 1580: 1563: 1555: 1551: 1543: 1535: 1531: 1528: 1525: 1513: 1512: 1511: 1510: 1506: 1490: 1482: 1478: 1462: 1456: 1453: 1450: 1442: 1438: 1434: 1433: 1417: 1414: 1411: 1408: 1383: 1380: 1377: 1374: 1371: 1346: 1343: 1340: 1337: 1329: 1313: 1305: 1302: 1299: 1291: 1283: 1280: 1277: 1274: 1271: 1259: 1258: 1257: 1256: 1252: 1248: 1244: 1240: 1239: 1223: 1220: 1217: 1214: 1189: 1186: 1183: 1180: 1177: 1152: 1149: 1146: 1143: 1135: 1119: 1111: 1108: 1105: 1091: 1088: 1085: 1077: 1069: 1066: 1063: 1060: 1057: 1045: 1044: 1043: 1042: 1038: 1034: 1030: 1026: 1025: 1008: 1000: 997: 994: 980: 977: 974: 966: 958: 955: 952: 940: 939: 938: 937: 933: 929: 925: 921: 917: 916: 910: 908: 904: 888: 884: 880: 860: 856: 852: 845: 824: 821: 818: 805: 801: 797: 792: 791:is infinite. 768: 738: 735: 722: 719: 701: 698:is a nonzero 680: 677: 674: 662:is infinite, 661: 656: 637: 607: 594: 573: 564: 555: 547: 539: 536: 533: 520: 516: 511: 509: 493: 490: 477: 474: 434: 431: 374: 366: 365:even integers 345: 342: 339: 331: 310: 307: 298: 296: 292: 271: 268: 265: 252: 228: 215: 212: 209: 201: 193: 181: 180: 179: 177: 173: 169: 165: 146: 143: 140: 114: 111: 108: 80: 77: 74: 61: 57: 53: 49: 45: 41: 37: 34: 30: 26: 22: 4932:Group theory 4879: 4873: 4849: 4843:January 2010 4840: 4830: 4823: 4816: 4809: 4797: 4785:Please help 4780:verification 4777: 4654: 4619: 4615: 4583: 4581: 4477: 4475: 4401: 4397: 4395: 4242: 4195: 4145:finite field 4090: 4086: 4084: 4010: 4008: 4003: 4001: 3911: 3899: 3802: 3800: 3792: 3791: 3787: 3783: 3779: 3775: 3771: 3767: 3763: 3735:is an index 3732: 3728: 3724: 3720: 3716: 3712: 3708: 3704: 3698: 3694: 3690: 3686: 3682: 3622:is an index 3619: 3615: 3611: 3607: 3603: 3599: 3595: 3589: 3585: 3577: 3573: 3569: 3565: 3561: 3557: 3552: 3537: 3530: 3495: 3490: 3486: 3474: 3470: 3466: 3462: 3458: 3454: 3450: 3446: 3438: 3434: 3418: 3416: 3402: 3400: 3384: 3380: 3376: 3372: 3368: 3364: 3360: 3356: 3352: 3348: 3344: 3340: 3336: 3332: 3328: 3324: 3322: 3313: 3309: 3304: 3295: 3291: 3287: 3283: 3279: 3275: 3273: 3268: 3264: 3260: 3256: 3252: 3248: 3244: 3240: 3236: 3232: 3228: 3224: 3220: 3216: 3212: 3208: 3204: 3200: 3196: 3192: 3188: 3184: 3180: 3176: 3172: 3168: 3164: 3162: 3152: 3148: 3144: 3140: 3136: 3132: 3128: 3124: 3120: 3116: 3112: 3108: 3104: 3100: 3096: 3092: 3088: 3081: 3074: 3070: 3066: 3059: 3053: 3049: 3042: 3038: 3031: 3027: 3023: 3019: 3015: 3011: 3004: 3000: 2993: 2989: 2982: 2980: 2963: 2959: 2955: 2951: 2947: 2943: 2941: 2931: 2927: 2923: 2917: 2913: 2907: 2900: 2893: 2889: 2885: 2881: 2875: 2871: 2865: 2861: 2857: 2853: 2849: 2845: 2841: 2837: 2833: 2829: 2825: 2821: 2817: 2815: 2798: 2796: 2791: 2787: 2783: 2779: 2775: 2771: 2767: 2763: 2759: 2755: 2748: 2744: 2742: 2739:Finite index 2733: 2729: 2725: 2721: 2717: 2713: 2701: 2697: 2653: 2649: 2645: 2641: 2639: 2617: 2429: 2333: 1996:simple group 1988: 1984: 1980: 1976: 1972: 1968: 1964: 1866: 1858: 1854: 1847: 1843: 1835: 1831: 1788: 1784: 1626: 1618: 1614: 1605:. Then the 1602: 1598: 1594: 1583: 1504: 1477:homomorphism 1440: 1436: 1250: 1246: 1242: 1036: 1032: 1028: 931: 927: 923: 919: 906: 902: 803: 795: 793: 659: 657: 514: 512: 507: 299: 294: 290: 248: 171: 163: 59: 55: 51: 47: 39: 35: 28: 25:group theory 18: 4753:Codimension 3533:prime power 3511:group, see 3227:, but also 3225:G dca = dxc 2743:A subgroup 2710:uncountable 2471:nontrivial 1863:normal core 1781:centralizer 1607:cardinality 1586:be a group 38:in a group 21:mathematics 4906:PlanetMath 4813:newspapers 4759:References 3914:complement 3782:surjects. 3719:such that 3606:such that 3421:of chiral 3417:The group 2906:โˆˆ H) then 2782:; indeed, 2766:has index 2529:free group 1840:normalizer 1716:conjugates 1623:stabilizer 1597:, and let 913:Properties 332:, and let 162:. Because 4748:Virtually 4726:… 4599:− 4582:for some 4554:⋯ 4530:− 4510:− 4445:∈ 4379:× 4338:∖ 4307:⁡ 4267:⁡ 4227:× 4103:⁡ 4039:⁡ 3960:≅ 3916:of their 3861:⊇ 3837:⊇ 3701:surjects. 3592:surjects. 3231:for some 3229:dca = hdc 3087:for some 3010:for some 2706:countable 2598:− 2578:− 2494:→ 2453:− 2410:− 2390:− 2296:∣ 2254:∣ 2218:∣ 2169:⊕ 2129:⁡ 2094:⁡ 1987:and thus 1954:factorial 1914:≤ 1897:⁡ 1813:− 1764:∈ 1736:− 1556:φ 1536:φ 1491:φ 1460:→ 1454:: 1451:φ 1381:∩ 1292:≤ 1281:∩ 1187:∩ 1078:≤ 1067:∩ 4926:Category 4742:See also 3580:) is an 3463:Hca = Hc 3427:dihedral 3413:Examples 3407:Lam 2004 3375:divides 3286:must be 3215:we have 2884:for all 2009:Examples 625:divides 367:. Then 330:addition 33:subgroup 4888:4145135 4827:scholar 4013:form a 3540:-groups 3257:ca = xc 3245:hd = dx 3217:ca = xc 3052:, then 3003:equals 2958:. Then 2848:, then 2704:may be 1609:of the 1359:. (If 1165:. (If 806:, then 4886:  4829:  4822:  4815:  4808:  4800:  3359:where 3243:), so 3179:. (If 2946:. Let 2892:(with 2627:has a 1617:under 1588:acting 1481:kernel 1253:, then 1039:, then 934:, then 751:, but 519:finite 176:orders 44:cosets 27:, the 4915:" at 4884:JSTOR 4834:JSTOR 4820:books 3127:, so 3030:. If 2974:Proof 2926:, so 2864:. If 2809:Proof 2340:then 2338:prime 1979:then 1958:below 1611:orbit 1590:on a 1475:is a 798:is a 658:When 595:that 513:When 31:of a 29:index 4806:news 4684:the 4655:For 4480:is 3394:and 3367:(if 3207:and 3133:Hcab 3103:and 3041:and 2850:Hcab 2758:(of 2623:The 2557:has 2369:has 2153:The 2080:The 2014:The 1894:Core 1582:Let 1439:and 1245:and 1031:and 926:and 293:and 168:size 4904:at 4880:111 4789:by 4304:Hom 4264:Hom 4100:Hom 4036:Hom 3715:of 3681:): 3500:of 3465:). 3409:). 3398:). 3261:cac 3129:Hcb 3125:Hca 2999:of 2928:Hca 2834:Hcb 2818:Hca 2816:If 2708:or 2700:in 2652:in 2640:If 2336:is 2273:and 1967:in 1865:of 1853:If 1846:in 1842:of 1834:in 1787:in 1783:of 1625:of 1613:of 1592:set 1532:ker 1503:in 1483:of 1435:If 1027:If 918:If 905:in 802:of 794:If 517:is 170:as 130:or 98:or 58:in 50:in 46:of 19:In 4928:: 4878:, 4872:, 4720:15 4620:p, 4584:k; 4298::= 4196:p, 4091:p, 3803:K, 3550:. 3506:2h 3493:. 3381:p, 3320:. 3263:โˆˆ 3251:, 3235:โˆˆ 3223:โˆˆ 3211:โˆˆ 3203:โˆˆ 3155:. 3149:ab 3141:ab 3131:= 3121:Hc 3113:ab 3111:, 3082:ab 3071:Hc 3069:โˆˆ 3067:hc 3065:= 3054:cb 3050:hd 3048:= 3043:cb 3037:= 3032:cb 3028:Hd 3020:Hc 3005:ab 2966:. 2934:. 2932:Hc 2930:โŠ‚ 2916:= 2914:ca 2899:, 2888:โˆˆ 2874:= 2872:ca 2860:โˆˆ 2856:โˆ€ 2854:Hc 2852:โŠ‚ 2844:โˆˆ 2840:โˆ€ 2838:Hc 2836:โŠ‚ 2828:โˆˆ 2824:โˆ€ 2822:Hc 2820:โŠ‚ 2734:G. 2726:G, 2091:SO 1985:p, 1977:G, 1960:. 1552:im 1430:.) 1236:.) 909:. 655:. 510:. 297:. 4911:" 4908:. 4856:) 4850:( 4845:) 4841:( 4831:ยท 4824:ยท 4817:ยท 4810:ยท 4783:. 4723:, 4717:, 4714:7 4711:, 4708:3 4705:, 4702:1 4699:, 4696:0 4672:, 4669:2 4666:= 4663:p 4640:1 4637:+ 4634:p 4616:p 4602:1 4596:= 4593:k 4565:k 4561:p 4557:+ 4551:+ 4548:p 4545:+ 4542:1 4539:= 4536:) 4533:1 4527:p 4524:( 4520:/ 4516:) 4513:1 4505:1 4502:+ 4499:k 4495:p 4491:( 4478:p 4461:, 4458:p 4454:/ 4449:Z 4442:1 4422:p 4418:/ 4413:Z 4402:p 4398:p 4375:) 4371:p 4367:/ 4362:Z 4358:( 4354:/ 4350:) 4347:} 4344:0 4341:{ 4335:) 4332:) 4329:p 4325:/ 4320:Z 4316:, 4313:G 4310:( 4301:( 4295:) 4292:) 4289:p 4285:/ 4280:Z 4276:, 4273:G 4270:( 4261:( 4257:P 4243:p 4223:) 4219:p 4215:/ 4210:Z 4206:( 4182:. 4179:p 4175:/ 4170:Z 4166:= 4161:p 4156:F 4131:, 4128:) 4125:p 4121:/ 4116:Z 4112:, 4109:G 4106:( 4087:G 4070:. 4067:) 4064:) 4061:p 4057:/ 4052:Z 4048:, 4045:G 4042:( 4033:( 4029:P 4011:p 4004:G 3998:, 3984:k 3980:) 3976:p 3972:/ 3967:Z 3963:( 3957:) 3954:G 3951:( 3946:p 3941:E 3935:/ 3931:G 3885:. 3882:) 3879:G 3876:( 3871:p 3866:O 3858:) 3855:G 3852:( 3847:p 3842:A 3834:) 3831:G 3828:( 3823:p 3818:E 3797:. 3793:p 3788:G 3786:( 3784:O 3780:G 3776:p 3772:G 3770:( 3768:O 3766:/ 3764:G 3748:k 3744:p 3733:K 3729:p 3725:K 3723:/ 3721:G 3717:G 3713:K 3709:G 3707:( 3705:O 3699:G 3695:p 3691:G 3689:( 3687:A 3685:/ 3683:G 3669:] 3666:G 3663:, 3660:G 3657:[ 3635:k 3631:p 3620:K 3616:p 3612:K 3610:/ 3608:G 3604:K 3600:G 3598:( 3596:A 3590:G 3586:p 3578:G 3576:( 3574:E 3572:/ 3570:G 3566:p 3562:G 3560:( 3558:E 3538:p 3521:3 3498:h 3491:H 3487:A 3483:3 3481:S 3475:A 3471:O 3467:A 3461:( 3459:H 3455:A 3451:H 3447:A 3443:2 3439:H 3435:O 3431:4 3429:D 3419:O 3403:p 3388:7 3385:Z 3377:p 3373:N 3369:G 3365:G 3361:p 3357:p 3353:H 3349:H 3345:G 3341:H 3337:G 3333:H 3329:H 3325:n 3318:5 3314:n 3310:n 3305:n 3302:S 3296:G 3292:H 3288:n 3284:G 3280:H 3276:n 3269:A 3265:A 3253:x 3249:d 3241:A 3237:H 3233:h 3221:d 3213:A 3209:a 3205:G 3201:c 3197:A 3193:H 3189:n 3185:n 3181:G 3177:B 3173:n 3169:n 3165:H 3153:B 3151:โˆˆ 3145:b 3137:c 3117:B 3109:A 3107:โˆˆ 3105:a 3101:B 3099:โˆˆ 3097:b 3093:A 3091:โˆˆ 3089:a 3085:1 3080:= 3078:2 3075:b 3063:1 3060:b 3057:2 3046:2 3039:d 3035:1 3024:B 3016:A 3014:โˆˆ 3012:a 3008:1 3001:B 2997:2 2994:b 2990:B 2988:โˆˆ 2986:1 2983:b 2964:A 2960:B 2956:H 2952:G 2948:B 2944:A 2924:c 2921:1 2918:h 2911:2 2908:h 2904:2 2901:h 2897:1 2894:h 2890:G 2886:c 2882:c 2879:2 2876:h 2869:1 2866:h 2862:G 2858:c 2846:G 2842:c 2830:G 2826:c 2799:G 2792:H 2788:G 2784:N 2780:n 2776:n 2772:N 2768:n 2764:H 2760:G 2756:N 2749:G 2745:H 2730:H 2722:H 2718:G 2714:H 2702:G 2698:H 2679:| 2675:H 2672:: 2669:G 2665:| 2654:G 2650:H 2646:G 2642:H 2620:. 2618:p 2604:) 2601:1 2595:p 2592:( 2588:/ 2584:) 2581:1 2573:n 2569:p 2565:( 2543:n 2539:F 2524:. 2511:Z 2507:p 2503:/ 2498:Z 2489:n 2484:Z 2459:) 2456:1 2448:n 2444:p 2440:( 2430:p 2416:) 2413:1 2407:p 2404:( 2400:/ 2396:) 2393:1 2385:n 2381:p 2377:( 2355:n 2350:Z 2334:p 2325:. 2313:} 2305:y 2302:+ 2299:x 2293:) 2290:y 2287:, 2284:x 2281:( 2278:{ 2268:, 2265:} 2257:y 2251:) 2248:y 2245:, 2242:x 2239:( 2236:{ 2232:, 2229:} 2221:x 2215:) 2212:y 2209:, 2206:x 2203:( 2200:{ 2173:Z 2165:Z 2138:) 2135:n 2132:( 2126:O 2103:) 2100:n 2097:( 2065:, 2060:n 2056:S 2030:n 2026:A 2002:. 1989:H 1981:H 1973:p 1969:G 1965:H 1936:! 1932:| 1928:H 1925:: 1922:G 1918:| 1910:| 1906:) 1903:H 1900:( 1891:: 1888:G 1884:| 1867:H 1859:G 1855:H 1850:. 1848:G 1844:H 1836:G 1832:H 1816:1 1809:g 1805:H 1802:g 1791:. 1789:G 1785:x 1767:G 1761:x 1739:1 1732:g 1728:x 1725:g 1709:. 1688:. 1684:| 1678:x 1674:G 1670:: 1667:G 1663:| 1659:= 1655:| 1651:x 1648:G 1644:| 1629:: 1627:x 1619:G 1615:x 1603:X 1599:x 1595:X 1584:G 1564:. 1560:| 1548:| 1544:= 1540:| 1529:: 1526:G 1522:| 1505:G 1463:H 1457:G 1441:H 1437:G 1418:G 1415:= 1412:K 1409:H 1388:| 1384:K 1378:H 1375:: 1372:H 1368:| 1347:G 1344:= 1341:K 1338:H 1314:, 1310:| 1306:K 1303:: 1300:G 1296:| 1288:| 1284:K 1278:H 1275:: 1272:H 1268:| 1251:G 1247:K 1243:H 1224:G 1221:= 1218:K 1215:H 1194:| 1190:K 1184:H 1181:: 1178:G 1174:| 1153:G 1150:= 1147:K 1144:H 1120:, 1116:| 1112:K 1109:: 1106:G 1102:| 1096:| 1092:H 1089:: 1086:G 1082:| 1074:| 1070:K 1064:H 1061:: 1058:G 1054:| 1037:G 1033:K 1029:H 1009:. 1005:| 1001:K 998:: 995:H 991:| 985:| 981:H 978:: 975:G 971:| 967:= 963:| 959:K 956:: 953:G 949:| 932:H 928:K 924:G 920:H 907:G 903:N 889:N 885:/ 881:G 861:N 857:/ 853:G 829:| 825:N 822:: 819:G 815:| 804:G 796:N 778:| 773:Z 769:: 765:R 760:| 739:2 736:= 732:| 727:Z 723:2 720:: 716:Z 711:| 685:| 681:H 678:: 675:G 671:| 660:G 642:| 638:G 634:| 612:| 608:H 604:| 578:| 574:H 570:| 565:/ 560:| 556:G 552:| 548:= 544:| 540:H 537:: 534:G 530:| 515:G 508:n 494:n 491:= 487:| 482:Z 478:n 475:: 471:Z 466:| 444:| 439:Z 435:2 432:: 428:Z 423:| 401:Z 379:Z 375:2 350:Z 346:2 343:= 340:H 315:Z 311:= 308:G 295:H 291:G 276:| 272:H 269:: 266:G 262:| 233:| 229:H 225:| 220:| 216:H 213:: 210:G 206:| 202:= 198:| 194:G 190:| 172:H 164:G 150:) 147:H 144:: 141:G 138:( 118:] 115:H 112:: 109:G 106:[ 85:| 81:H 78:: 75:G 71:| 60:G 56:H 52:G 48:H 40:G 36:H

Index

mathematics
group theory
subgroup
cosets
size
orders
cardinal numbers
addition
even integers
finite
Lagrange's theorem
cardinal number
normal subgroup
quotient group
homomorphism
kernel
acting
set
cardinality
orbit
stabilizer
orbit-stabilizer theorem
conjugates
centralizer
normalizer
normal core
factorial
below
simple group
perfect group

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