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Non-associative algebra

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describes the canonical construction of enveloping algebras, as well as the PBW-type theorems for them. For Lie algebras, such enveloping algebras have a universal property, which does not hold, in general, for non-associative algebras. The best-known example is, perhaps the
3029:(an algebra over the reals), and generalizations of the octonions over other fields. All associative algebras are alternative. Up to isomorphism, the only finite-dimensional real alternative, division algebras (see below) are the reals, complexes, quaternions and octonions. 3149:
a unit for the algebra. Examples include all finite-dimensional alternative algebras, and the algebra of real 2-by-2 matrices. Up to isomorphism the only alternative, quadratic real algebras without divisors of zero are the reals, complexes, quaternions, and
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There are several properties that may be familiar from ring theory, or from associative algebras, which are not always true for non-associative algebras. Unlike the associative case, elements with a (two-sided) multiplicative inverse might also be a
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means that associativity is not assumed, it does not mean that associativity is disallowed. In other words, "non-associative" means "not necessarily associative", just as "noncommutative" means "not necessarily commutative" for
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Ring-like structures with two binary operations and no other restrictions are a broad class, one which is too general to study. For this reason, the best-known kinds of non-associative algebras satisfy
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operation. Since it is not assumed that the multiplication is associative, using parentheses to indicate the order of multiplications is necessary. For example, the expressions (
496: 459: 3035:, are those algebras satisfying the power-associative identity. Examples include all associative algebras, all alternative algebras, Jordan algebras over a field other than 931: 909: 205: 4687:
Some Aspects of Ring Theory: Lectures given at a Summer School of the Centro Internazionale Matematico Estivo (C.I.M.E.) held in Varenna (Como), Italy, August 23-31, 1965
2922: 2896: 3103:, in which multiplicative inverses exist. The finite-dimensional alternative division algebras over the field of real numbers have been classified. They are the 2559: 4560: 4829: 1268: 648: 3793: 3119:(dimension 8). The quaternions and octonions are not commutative. Of these algebras, all are associative except for the octonions. 885:-bilinear binary multiplication operation. If a structure obeys all of the ring axioms apart from associativity (for example, any 3688:
Some of the possible identities satisfied by non-associative algebras may be conveniently expressed in terms of the linear maps:
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as Lie bracket. In fact every Lie algebra can either be constructed this way, or is a subalgebra of a Lie algebra so constructed.
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is an example of an algebra which is anticommutative and not associative. The cross product also satisfies the Jacobi identity.
17: 3561: 4911: 4727: 4671: 3402: 105: 4524:. American Mathematical Society Colloquium Publ. Vol. 24 (Corrected reprint of the revised 1961 ed.). New York: 3015:)/2. In contrast to the Lie algebra case, not every Jordan algebra can be constructed this way. Those that can are called 3281:
is defined as the algebra with basis consisting of all non-associative monomials, finite formal products of elements of
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This article is about a particular structure known as a non-associative algebra. For non-associativity in general, see
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are algebras satisfying the alternative property. The most important examples of alternative algebras are the
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may be studied by associating it with other associative algebras which are subalgebras of the full algebra of
5041: 4943: 4838: 4764: 4719: 4525: 3384: 2455: 1254: 3226:. They carry two multiplications, turning them into commutative algebras and Lie algebras in different ways. 3972: 634: 501: 1123: 351: 4971: 3154: 111: 472: 435: 126: 3200: 3032: 3984:
that is not enveloped by the canonical construction of the enveloping algebra for Jordan algebras.
3000: 1963: 586: 389: 339: 914: 892: 188: 2957: 398: 132: 91: 4681: 3223: 1288: 555: 406: 357: 138: 4620: 4615: 4551: 4515: 3047: 678: 4921: 4869: 4737: 4599: 3208: 2940: 2901: 1291:, or properties, which simplify multiplication somewhat. These include the following ones. 1201: 1193: 1165: 1160: 1151: 1108: 1050: 875: 670: 279: 153: 5083: 5026: 5011:. Mathematics and its Applications. Vol. 393. Dordrecht: Kluwer Academic Publishers. 4997: 4929: 4877: 4815: 4782: 4607: 4543: 2809: 8: 4746: 3189: 3074: 3022: 1558: 1219: 1209: 1060: 960: 952: 943: 780: 689: 682: 561: 369: 320: 265: 159: 145: 73: 41: 5059: 4754: 4718:. American Mathematical Society Colloquium Publications, Vol. XXXIX. Providence, R.I.: 4650: 4637: 4587: 4498: 3377: 3305: 3059: 2544: 1025: 1016: 974: 852: 574: 60: 867:
More generally, some authors consider the concept of a non-associative algebra over a
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Power commutative: the subalgebra generated by any element is commutative, i.e.,
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Kurosh, A.G. (1947). "Non-associative algebras and free products of algebras".
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Algebra over a field where binary multiplication is not necessarily associative
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other than 2 gives rise to a Jordan algebra by defining a new multiplication
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is the centraliser of the enveloping algebra in the endomorphism algebra End
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is the associative algebra generated by the left and right linear maps. The
3254: 3090: 2953: 1239: 1170: 1004: 860:, the latter being in a sense "the smallest associative algebra containing 708: 696: 600: 375: 271: 4970:. Montroll Memorial Lecture Series in Mathematical Physics. Vol. 2. 4750: 4212: 4210: 3528: 3514: 3104: 2946: 1917: 1229: 1224: 1113: 1103: 1077: 824: 724: 580: 291: 165: 47: 3301:). The algebra is unital if one takes the empty product as a monomial. 4956: 4641: 4591: 3175: 3112: 2993: 2989:
are algebras which satisfy the commutative law and the Jordan identity.
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Introduction to Octonion and Other Non-Associative Algebras in Physics
4318: 4207: 1319:. Let powers to positive (non-zero) integer be recursively defined by 5090: 4941:
Mikheev, I.M. (1976). "Right nilpotency in right alternative rings".
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is the set of elements that commute and associate with everything in
1234: 1040: 997: 965: 305: 210: 4847: 4824: 4633: 4574: 4555: 3872:{\displaystyle Q(a):x\mapsto 2a\cdot (a\cdot x)-(a\cdot a)\cdot x\ } 2666:
is the set of elements that associate with all others: that is, the
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Zhevlakov, Konstantin A.; Slin'ko, Arkadii M.; Shestakov, Ivan P.;
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have a two-sided inverse, but some of them are also zero divisors.
3258: 3215:-algebras, they thus include Cayley-Dickson algebras and many more. 3196: 3185: 3116: 3040: 2992:
Every associative algebra gives rise to a Lie algebra by using the
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are algebras satisfying anticommutativity and the Jacobi identity.
3328:-vector space and so one can consider the associative algebra End 3308:
that every subalgebra of a free non-associative algebra is free.
183: 67: 1719:: the subalgebra generated by any element is associative, i.e., 2626:
It implies that permuting the extremal terms changes the sign:
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Koecher, Max (1999). Krieg, Aloys; Walcher, Sebastian (eds.).
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The Minnesota notes on Jordan algebras and their applications
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Bremner, Murray; Murakami, Lúcia; Shestakov, Ivan (2013) .
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are non-associative algebras used in mathematical genetics.
3054:, which was an experimental algebra before the adoption of 2792:{\displaystyle C(A)=\{n\in A\ |\ nr=rn\,\forall r\in A\,\}} 2602:
It implies that permuting any two terms changes the sign:
735:, and three-dimensional Euclidean space equipped with the 4405: 1849:
elements, in any association, vanishes, but not for some
4796:. Lecture Notes in Mathematics. Vol. 1710. Berlin: 4648: 4371: 4369: 4336: 4324: 4159: 4071: 4069: 4041: 4039: 3637:{\displaystyle L(a):x\mapsto ax;\ \ R(a):x\mapsto xa\ .} 3199:, and the infinite sequence of Cayley-Dickson algebras ( 4744: 4453: 4381: 4222: 4216: 4056: 4054: 4306: 4282: 4270: 4258: 4234: 4086: 4084: 3513:
of two derivations is again a derivation, so that the
3475:{\displaystyle D(x\cdot y)=D(x)\cdot y+x\cdot D(y)\ .} 723:
which may or may not be associative. Examples include
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with the nucleus. It turns out that for elements of
4429: 4195: 4183: 4147: 4081: 4024: 911:-algebra, so some authors refer to non-associative 4120: 4096: 3960: 3871: 3636: 3474: 2916: 2890: 2791: 2553: 2506: 925: 903: 537: 490: 453: 245: 199: 4561:Transactions of the American Mathematical Society 3285:retaining parentheses. The product of monomials 1281: 5117: 4830:Proceedings of the American Mathematical Society 4715:Structure and representations of Jordan algebras 3346:. We can associate to the algebra structure on 4825:"Power-associative rings of characteristic two" 3264: 1953: 2541:It measures the degree of nonassociativity of 4001:, which give rise to non-associative algebras 1262: 642: 3257:. For example, all non-zero elements of the 2911: 2905: 2786: 2734: 246:{\displaystyle 0=\mathbb {Z} /1\mathbb {Z} } 5065:An Introduction to Nonassociative Algebras 4618:(1948b). "On right alternative algebras". 3961:{\displaystyle Q(a)=2L^{2}(a)-L(a^{2})\ .} 2999:Every associative algebra over a field of 2580:denote arbitrary elements of the algebra. 1269: 1255: 649: 635: 5004: 4884: 4846: 4573: 4459: 4387: 4228: 4165: 2785: 2772: 2685:The nucleus is an associative subring of 1311:denote arbitrary elements of the algebra 919: 897: 538:{\displaystyle \mathbb {Z} (p^{\infty })} 515: 478: 441: 239: 226: 193: 4708: 4680: 4493: 4491: 4240: 3171:(a commutative and associative algebra); 3093:. Graded algebras can be generalized to 830:The nonassociative algebra structure of 5058: 4940: 4822: 4789: 4614: 4550: 4471: 4423: 4375: 4360: 4348: 4312: 4288: 4276: 4264: 4252: 4177: 4141: 4114: 4090: 4075: 4060: 4045: 4030: 4018: 2924:for the third to also be the zero set. 2507:{\displaystyle :A\times A\times A\to A} 14: 5118: 4855: 4514: 4447: 4411: 4337:Bremner, Murakami & Shestakov 2013 4325:Bremner, Murakami & Shestakov 2013 3311: 5037:Graduate Algebra: Noncommutative View 5033: 4963: 4651:"Chapter 86: Nonassociative Algebras" 4488: 4435: 4399: 4201: 4189: 4153: 4129: 4102: 3534: 3371: 3342:-linear vector space endomorphism of 2391:(one of the two identities defining 2351:(one of the two identities defining 1980:Any two out of the three properties 1352:(left powers) depending on authors. 771:)) may all yield different answers. 688:is a non-associative algebra over a 106:Free product of associative algebras 5040:. Graduate studies in mathematics. 3685:-scalar multiples of the identity. 1294: 24: 4894:. Universitext. Berlin, New York: 3999:Commutative non-associative magmas 3730:) commutes with the corresponding 3211:are all finite-dimensional unital 2806:it is enough that two of the sets 2773: 889:-algebra), then it is naturally a 527: 25: 5137: 5098:Rings that are nearly associative 2939:with multiplication given by the 850:-vector space. Two such are the 819:in the algebra. For example, the 594:Noncommutative algebraic geometry 5101:. Translated by Smith, Harry F. 3700:) is equal to the corresponding 3681:if its centroid consists of the 3366:(associative) enveloping algebra 3039:(see previous section), and the 858:(associative) enveloping algebra 711:binary multiplication operation 491:{\displaystyle \mathbb {Q} _{p}} 454:{\displaystyle \mathbb {Z} _{p}} 2709:, that is the intersection of 675:binary multiplication operation 3949: 3936: 3927: 3921: 3902: 3896: 3857: 3845: 3839: 3827: 3815: 3806: 3800: 3776:) and similarly for the right. 3649:associative enveloping algebra 3619: 3610: 3604: 3583: 3574: 3568: 3463: 3457: 3436: 3430: 3421: 3409: 2885: 2882: 2864: 2858: 2840: 2834: 2816: 2813: 2750: 2728: 2722: 2498: 2477: 2459: 1282:Algebras satisfying identities 532: 519: 13: 1: 5042:American Mathematical Society 4944:Siberian Mathematical Journal 4839:American Mathematical Society 4765:American Mathematical Society 4720:American Mathematical Society 4526:American Mathematical Society 4508: 3973:universal enveloping algebras 3247: 2630:; the converse holds only if 2606:; the converse holds only if 2426: 1377:; in that case we can define 4005: 3271:free non-associative algebra 3265:Free non-associative algebra 1954:Relations between properties 926:{\displaystyle \mathbb {Z} } 904:{\displaystyle \mathbb {Z} } 200:{\displaystyle \mathbb {Z} } 7: 5034:Rowen, Louis Halle (2008). 4656:. In Hogben, Leslie (ed.). 3987: 2927: 1938:and there exist an element 1914:for a specific association. 352:Unique factorization domain 10: 5142: 4972:Cambridge University Press 4891:A taste of Jordan algebras 4823:Kokoris, Louis A. (1955). 4659:Handbook of Linear Algebra 3375: 3240: 3201:power-associative algebras 3066:More classes of algebras: 3033:Power-associative algebras 2430: 1796:Fourth power commutative: 1739:th power commutative with 1687:Fourth power associative: 1633:th power associative with 112:Tensor product of algebras 29: 5005:Rosenfeld, Boris (1997). 4556:"Power-associative rings" 4339:, pp. 18–19, fact 6. 3547:attached to each element 3181:(an associative algebra); 3145:in the ground field, and 2692: 2654:Third power associative: 1780:Third power commutative: 1671:Third power associative: 1359:: there exist an element 5126:Non-associative algebras 4980:10.1017/CBO9780511524479 4481: 3782:quadratic representation 2393:fourth power associative 2353:fourth power associative 2063:second power commutative 2059:Second power associative 1811:fourth power associative 1709:fourth power commutative 390:Formal power series ring 340:Integrally closed domain 4964:Okubo, Susumu (2005) . 4760:The book of involutions 4363:, p. 554, lemma 3. 4351:, p. 554, lemma 4. 3155:Cayley–Dickson algebras 3115:(dimension 4), and the 2958:differentiable manifold 2595:(left alternative) and 2376:Third power associative 2073:third power commutative 2069:Third power associative 2053:third power associative 1992:, imply the third one. 1581:(left alternative) and 703:and is equipped with a 663:non-associative algebra 399:Algebraic number theory 92:Total ring of fractions 5008:Geometry of Lie groups 3962: 3873: 3653:multiplication algebra 3638: 3539:There are linear maps 3476: 3350:two subalgebras of End 3224:geometric quantization 2918: 2892: 2793: 2555: 2508: 927: 905: 556:Noncommutative algebra 539: 492: 455: 407:Algebraic number field 358:Principal ideal domain 247: 201: 139:Frobenius endomorphism 18:Nonassociative algebra 4621:Annals of Mathematics 4521:Structure of algebras 4301:Zhevlakov et al. 1982 3963: 3874: 3639: 3477: 3209:Hypercomplex algebras 3165:), which begin with: 3125:, which require that 3048:hyperbolic quaternion 2919: 2917:{\displaystyle \{0\}} 2893: 2794: 2651:depending on authors. 2599:(right alternative). 2556: 2509: 1845:: the product of any 1555:depending on authors. 1506:depending on authors. 935:non-associative rings 928: 906: 677:is not assumed to be 540: 493: 456: 248: 202: 5093:Shirshov, Anatoly I. 4747:Merkurjev, Alexander 4497:It follows from the 3890: 3794: 3562: 3403: 3137:, for some elements 3023:Alternative algebras 2941:vector cross product 2902: 2891:{\displaystyle (,,)} 2810: 2716: 2545: 2456: 2274:nilpotent of index 2 2115:Nilpotent of index 3 2089:th power commutative 2082:th power associative 1823:th power commutative 1724:th power associative 1601:(right alternative). 1166:Group with operators 1109:Complemented lattice 944:Algebraic structures 915: 893: 781:noncommutative rings 671:algebra over a field 667:distributive algebra 562:Noncommutative rings 511: 473: 436: 280:Non-associative ring 216: 189: 146:Algebraic structures 5060:Schafer, Richard D. 4755:Tignol, Jean-Pierre 4414:, pp. 237–262. 3760:Alternative: every 3489:form a subspace Der 3485:The derivations on 3324:is in particular a 3312:Associated algebras 3190:alternative algebra 3111:(dimension 2), the 3107:(dimension 1), the 3075:multilinear algebra 2125:Nilpotent of index 1220:Composition algebra 980:Quasigroup and loop 683:algebraic structure 321:Commutative algebra 160:Associative algebra 42:Algebraic structure 4957:10.1007/BF00969304 4745:Knus, Max-Albert; 3958: 3869: 3715:commutes with any 3692:Commutative: each 3677:). An algebra is 3634: 3535:Enveloping algebra 3472: 3396:with the property 3378:Derivation algebra 3372:Derivation algebra 3362:derivation algebra 3222:are considered in 3123:Quadratic algebras 3060:special relativity 2914: 2888: 2789: 2551: 2504: 1342:(right powers) or 923: 901: 853:derivation algebra 774:While this use of 575:Semiprimitive ring 535: 488: 451: 259:Related structures 243: 197: 133:Inner automorphism 119:Ring homomorphisms 4913:978-0-387-95447-9 4729:978-0-821-84640-7 4673:978-1-498-78560-0 4616:Albert, A. Adrian 4552:Albert, A. Adrian 4516:Albert, A. Adrian 3980:, an exceptional 3954: 3883:or equivalently, 3868: 3711:Associative: any 3630: 3600: 3597: 3527:) a structure of 3468: 3101:Division algebras 3095:filtered algebras 3083:symmetric algebra 2977:algebraic variety 2756: 2748: 2643:Jordan identity: 2554:{\displaystyle A} 2397:power associative 2395:) together imply 2357:power associative 2355:) together imply 2319:are incompatible. 2296:are incompatible. 2260:power associative 2230:power associative 2219:power associative 2215:Right alternative 2196:power associative 2161:are incompatible. 2043:power associative 1986:right alternative 1929:power associative 1888:elements so that 1762:for all integers 1717:Power associative 1653:for all integers 1279: 1278: 881:equipped with an 659: 658: 616:Geometric algebra 327:Commutative rings 178:Category of rings 32:Non-associativity 16:(Redirected from 5133: 5112: 5087: 5055: 5030: 5001: 4960: 4937: 4886:McCrimmon, Kevin 4881: 4852: 4850: 4819: 4786: 4741: 4710:Jacobson, Nathan 4705: 4677: 4662:(2nd ed.). 4655: 4645: 4611: 4577: 4547: 4502: 4495: 4475: 4469: 4463: 4457: 4451: 4445: 4439: 4433: 4427: 4421: 4415: 4409: 4403: 4397: 4391: 4385: 4379: 4373: 4364: 4358: 4352: 4346: 4340: 4334: 4328: 4322: 4316: 4310: 4304: 4298: 4292: 4286: 4280: 4274: 4268: 4262: 4256: 4250: 4244: 4238: 4232: 4226: 4220: 4217:Knus et al. 1998 4214: 4205: 4199: 4193: 4187: 4181: 4175: 4169: 4163: 4157: 4151: 4145: 4139: 4133: 4127: 4118: 4112: 4106: 4100: 4094: 4088: 4079: 4073: 4064: 4058: 4049: 4043: 4034: 4028: 4022: 4016: 3994:List of algebras 3967: 3965: 3964: 3959: 3952: 3948: 3947: 3920: 3919: 3878: 3876: 3875: 3870: 3866: 3749:) commutes with 3722:Flexible: every 3643: 3641: 3640: 3635: 3628: 3598: 3595: 3481: 3479: 3478: 3473: 3466: 3243:list of algebras 3230:Genetic algebras 3220:Poisson algebras 3087:exterior algebra 2923: 2921: 2920: 2915: 2897: 2895: 2894: 2889: 2798: 2796: 2795: 2790: 2754: 2753: 2746: 2680: 2669: 2657: 2650: 2646: 2637: 2629: 2622: 2613: 2605: 2598: 2594: 2587: 2579: 2575: 2571: 2560: 2558: 2557: 2552: 2536: 2513: 2511: 2510: 2505: 2410: 2390: 2370: 2350: 2330: 2307: 2226:left alternative 2209: 2182: 2174: 2159: 2147: 2135: 2128: 2088: 2081: 2065:are always true. 1982:left alternative 1961: 1948: 1941: 1937: 1926: 1913: 1887: 1881:and there exist 1880: 1855: 1848: 1844: 1831: 1822: 1808: 1792: 1776: 1765: 1761: 1745: 1738: 1732: 1723: 1706: 1683: 1667: 1656: 1652: 1639: 1632: 1626: 1600: 1580: 1554: 1534: 1505: 1478: 1444: 1428: 1412: 1386: 1376: 1362: 1351: 1341: 1328: 1318: 1314: 1310: 1306: 1302: 1295:Usual properties 1271: 1264: 1257: 1046:Commutative ring 975:Rack and quandle 940: 939: 932: 930: 929: 924: 922: 910: 908: 907: 902: 900: 869:commutative ring 823:are unital, but 798:identity element 651: 644: 637: 622:Operator algebra 608:Clifford algebra 544: 542: 541: 536: 531: 530: 518: 497: 495: 494: 489: 487: 486: 481: 460: 458: 457: 452: 450: 449: 444: 422:Ring of integers 416: 413:Integers modulo 364:Euclidean domain 252: 250: 249: 244: 242: 234: 229: 206: 204: 203: 198: 196: 100:Product of rings 86:Fractional ideal 45: 37: 36: 21: 5141: 5140: 5136: 5135: 5134: 5132: 5131: 5130: 5116: 5115: 5109: 5076: 5052: 5019: 4990: 4914: 4896:Springer-Verlag 4848:10.2307/2032920 4808: 4798:Springer-Verlag 4775: 4730: 4702: 4692:Springer-Verlag 4684:, ed. (2011) . 4682:Herstein, I. N. 4674: 4653: 4634:10.2307/1969457 4575:10.2307/1990399 4536: 4511: 4506: 4505: 4499:Artin's theorem 4496: 4489: 4484: 4479: 4478: 4470: 4466: 4458: 4454: 4446: 4442: 4434: 4430: 4422: 4418: 4410: 4406: 4398: 4394: 4386: 4382: 4374: 4367: 4359: 4355: 4347: 4343: 4335: 4331: 4323: 4319: 4311: 4307: 4299: 4295: 4287: 4283: 4275: 4271: 4263: 4259: 4251: 4247: 4239: 4235: 4227: 4223: 4215: 4208: 4200: 4196: 4188: 4184: 4176: 4172: 4164: 4160: 4152: 4148: 4140: 4136: 4128: 4121: 4113: 4109: 4101: 4097: 4089: 4082: 4074: 4067: 4059: 4052: 4044: 4037: 4029: 4025: 4017: 4013: 4008: 3990: 3971:The article on 3943: 3939: 3915: 3911: 3891: 3888: 3887: 3795: 3792: 3791: 3672: 3563: 3560: 3559: 3537: 3522: 3504: 3494: 3404: 3401: 3400: 3380: 3374: 3355: 3333: 3314: 3267: 3250: 3245: 3109:complex numbers 3071:Graded algebras 3056:Minkowski space 2987:Jordan algebras 2970:complex numbers 2934:Euclidean space 2930: 2903: 2900: 2899: 2811: 2808: 2807: 2749: 2717: 2714: 2713: 2695: 2678: 2667: 2655: 2648: 2644: 2631: 2627: 2620: 2607: 2603: 2596: 2592: 2585: 2577: 2573: 2569: 2546: 2543: 2542: 2518: 2457: 2454: 2453: 2451:multilinear map 2435: 2429: 2422:are equivalent. 2420:anticommutative 2404: 2379: 2364: 2339: 2324: 2317:Jacobi identity 2301: 2294:anticommutative 2280:Anticommutative 2272:together imply 2270:anticommutative 2258:together imply 2252:Jordan identity 2244:together imply 2242:Jordan identity 2203: 2194:together imply 2188:Jordan identity 2176: 2166: 2157: 2138: 2133: 2126: 2119:Jacobi identity 2109:Jordan identity 2099:anticommutative 2086: 2079: 2075:are equivalent. 2029:Anticommutative 2013:Jordan identity 1959: 1956: 1943: 1939: 1932: 1921: 1911: 1901: 1895: 1889: 1882: 1878: 1869: 1863: 1857: 1850: 1846: 1839: 1826: 1820: 1797: 1781: 1767: 1763: 1747: 1740: 1736: 1727: 1721: 1688: 1672: 1658: 1654: 1641: 1634: 1630: 1608: 1582: 1562: 1536: 1513: 1510:Jordan identity 1480: 1452: 1449:Jacobi identity 1436: 1433:Anticommutative 1420: 1394: 1378: 1364: 1360: 1343: 1330: 1320: 1316: 1315:over the field 1312: 1308: 1304: 1300: 1297: 1284: 1275: 1246: 1245: 1244: 1215:Non-associative 1197: 1186: 1185: 1175: 1155: 1144: 1143: 1132:Map of lattices 1128: 1124:Boolean algebra 1119:Heyting algebra 1093: 1082: 1081: 1075: 1056:Integral domain 1020: 1009: 1008: 1002: 956: 918: 916: 913: 912: 896: 894: 891: 890: 776:non-associative 729:Jordan algebras 655: 626: 625: 558: 548: 547: 526: 522: 514: 512: 509: 508: 482: 477: 476: 474: 471: 470: 445: 440: 439: 437: 434: 433: 414: 384:Polynomial ring 334:Integral domain 323: 313: 312: 238: 230: 225: 217: 214: 213: 192: 190: 187: 186: 172:Involutive ring 57: 46: 40: 35: 28: 23: 22: 15: 12: 11: 5: 5139: 5129: 5128: 5114: 5113: 5107: 5088: 5074: 5056: 5050: 5031: 5017: 5002: 4988: 4961: 4951:(1): 178–180. 4938: 4912: 4904:10.1007/b97489 4882: 4853: 4820: 4806: 4787: 4773: 4742: 4728: 4706: 4700: 4678: 4672: 4646: 4612: 4548: 4534: 4510: 4507: 4504: 4503: 4486: 4485: 4483: 4480: 4477: 4476: 4464: 4460:McCrimmon 2004 4452: 4450:, p. 113. 4440: 4428: 4416: 4404: 4402:, p. 321. 4392: 4388:McCrimmon 2004 4380: 4365: 4353: 4341: 4329: 4317: 4315:, p. 148. 4305: 4303:, p. 343. 4293: 4291:, p. 179. 4281: 4279:, p. 319. 4269: 4267:, p. 710. 4257: 4245: 4233: 4229:Rosenfeld 1997 4221: 4219:, p. 451. 4206: 4194: 4182: 4170: 4168:, p. 153. 4166:McCrimmon 2004 4158: 4146: 4134: 4119: 4107: 4095: 4080: 4078:, p. 128. 4065: 4050: 4048:, p. 553. 4035: 4023: 4010: 4009: 4007: 4004: 4003: 4002: 3996: 3989: 3986: 3982:Jordan algebra 3978:Albert algebra 3969: 3968: 3957: 3951: 3946: 3942: 3938: 3935: 3932: 3929: 3926: 3923: 3918: 3914: 3910: 3907: 3904: 3901: 3898: 3895: 3881: 3880: 3865: 3862: 3859: 3856: 3853: 3850: 3847: 3844: 3841: 3838: 3835: 3832: 3829: 3826: 3823: 3820: 3817: 3814: 3811: 3808: 3805: 3802: 3799: 3787:is defined by 3778: 3777: 3758: 3741:Jordan: every 3739: 3720: 3709: 3668: 3645: 3644: 3633: 3627: 3624: 3621: 3618: 3615: 3612: 3609: 3606: 3603: 3594: 3591: 3588: 3585: 3582: 3579: 3576: 3573: 3570: 3567: 3551:of an algebra 3536: 3533: 3518: 3500: 3490: 3483: 3482: 3471: 3465: 3462: 3459: 3456: 3453: 3450: 3447: 3444: 3441: 3438: 3435: 3432: 3429: 3426: 3423: 3420: 3417: 3414: 3411: 3408: 3376:Main article: 3373: 3370: 3351: 3329: 3313: 3310: 3266: 3263: 3249: 3246: 3239: 3238: 3236:Triple systems 3233: 3227: 3216: 3206: 3205: 3204: 3193: 3182: 3172: 3151: 3120: 3098: 3079:tensor algebra 3077:, such as the 3064: 3063: 3044: 3030: 3020: 3001:characteristic 2997: 2990: 2984: 2950: 2944: 2929: 2926: 2913: 2910: 2907: 2887: 2884: 2881: 2878: 2875: 2872: 2869: 2866: 2863: 2860: 2857: 2854: 2851: 2848: 2845: 2842: 2839: 2836: 2833: 2830: 2827: 2824: 2821: 2818: 2815: 2800: 2799: 2788: 2784: 2781: 2778: 2775: 2771: 2768: 2765: 2762: 2759: 2752: 2745: 2742: 2739: 2736: 2733: 2730: 2727: 2724: 2721: 2694: 2691: 2683: 2682: 2660: 2659: 2652: 2641: 2640: 2639: 2617: 2616: 2615: 2589: 2550: 2539: 2538: 2503: 2500: 2497: 2494: 2491: 2488: 2485: 2482: 2479: 2476: 2473: 2470: 2467: 2464: 2461: 2431:Main article: 2428: 2425: 2424: 2423: 2401: 2400: 2361: 2360: 2321: 2320: 2298: 2297: 2287: 2284:nil of index 2 2277: 2263: 2249: 2235: 2234: 2233: 2200: 2199: 2163: 2162: 2149: 2122: 2112: 2105:Nil of index 2 2102: 2095:Nil of index 2 2092: 2076: 2066: 2056: 2046: 2036: 2026: 2016: 2006: 2005: 2004: 1978: 1964:characteristic 1955: 1952: 1951: 1950: 1915: 1906: 1899: 1893: 1874: 1867: 1861: 1833: 1816: 1815: 1814: 1809:(compare with 1794: 1734: 1714: 1713: 1712: 1707:(compare with 1685: 1628: 1602: 1556: 1507: 1446: 1430: 1414: 1388: 1296: 1293: 1283: 1280: 1277: 1276: 1274: 1273: 1266: 1259: 1251: 1248: 1247: 1243: 1242: 1237: 1232: 1227: 1222: 1217: 1212: 1206: 1205: 1204: 1198: 1192: 1191: 1188: 1187: 1184: 1183: 1180:Linear algebra 1174: 1173: 1168: 1163: 1157: 1156: 1150: 1149: 1146: 1145: 1142: 1141: 1138:Lattice theory 1134: 1127: 1126: 1121: 1116: 1111: 1106: 1101: 1095: 1094: 1088: 1087: 1084: 1083: 1074: 1073: 1068: 1063: 1058: 1053: 1048: 1043: 1038: 1033: 1028: 1022: 1021: 1015: 1014: 1011: 1010: 1001: 1000: 995: 990: 984: 983: 982: 977: 972: 963: 957: 951: 950: 947: 946: 921: 899: 786:An algebra is 681:. That is, an 657: 656: 654: 653: 646: 639: 631: 628: 627: 619: 618: 590: 589: 583: 577: 571: 559: 554: 553: 550: 549: 546: 545: 534: 529: 525: 521: 517: 498: 485: 480: 461: 448: 443: 431:-adic integers 424: 418: 409: 395: 394: 393: 392: 386: 380: 379: 378: 366: 360: 354: 348: 342: 324: 319: 318: 315: 314: 311: 310: 309: 308: 296: 295: 294: 288: 276: 275: 274: 256: 255: 254: 253: 241: 237: 233: 228: 224: 221: 207: 195: 174: 168: 162: 156: 142: 141: 135: 129: 115: 114: 108: 102: 96: 95: 94: 88: 76: 70: 58: 56:Basic concepts 55: 54: 51: 50: 26: 9: 6: 4: 3: 2: 5138: 5127: 5124: 5123: 5121: 5110: 5108:0-12-779850-1 5104: 5100: 5099: 5094: 5089: 5085: 5081: 5077: 5075:0-486-68813-5 5071: 5067: 5066: 5061: 5057: 5053: 5051:0-8218-8408-5 5047: 5043: 5039: 5038: 5032: 5028: 5024: 5020: 5018:0-7923-4390-5 5014: 5010: 5009: 5003: 4999: 4995: 4991: 4989:0-521-01792-0 4985: 4981: 4977: 4973: 4969: 4968: 4962: 4958: 4954: 4950: 4946: 4945: 4939: 4935: 4931: 4927: 4923: 4919: 4915: 4909: 4905: 4901: 4897: 4893: 4892: 4887: 4883: 4879: 4875: 4871: 4867: 4863: 4859: 4854: 4849: 4844: 4840: 4836: 4832: 4831: 4826: 4821: 4817: 4813: 4809: 4807:3-540-66360-6 4803: 4799: 4795: 4794: 4788: 4784: 4780: 4776: 4774:0-8218-0904-0 4770: 4766: 4762: 4761: 4756: 4752: 4748: 4743: 4739: 4735: 4731: 4725: 4721: 4717: 4716: 4711: 4707: 4703: 4701:3-6421-1036-3 4697: 4693: 4689: 4688: 4683: 4679: 4675: 4669: 4665: 4661: 4660: 4652: 4647: 4643: 4639: 4635: 4631: 4627: 4623: 4622: 4617: 4613: 4609: 4605: 4601: 4597: 4593: 4589: 4585: 4581: 4576: 4571: 4567: 4563: 4562: 4557: 4553: 4549: 4545: 4541: 4537: 4535:0-8218-1024-3 4531: 4527: 4523: 4522: 4517: 4513: 4512: 4500: 4494: 4492: 4487: 4474:, p. 57. 4473: 4468: 4462:, p. 57. 4461: 4456: 4449: 4444: 4438:, p. 24. 4437: 4432: 4425: 4420: 4413: 4408: 4401: 4396: 4390:, p. 56. 4389: 4384: 4378:, p. 14. 4377: 4372: 4370: 4362: 4357: 4350: 4345: 4338: 4333: 4327:, p. 18. 4326: 4321: 4314: 4309: 4302: 4297: 4290: 4285: 4278: 4273: 4266: 4261: 4255:, p. 92. 4254: 4249: 4243:, p. 36. 4242: 4241:Jacobson 1968 4237: 4231:, p. 91. 4230: 4225: 4218: 4213: 4211: 4204:, p. 17. 4203: 4198: 4192:, p. 16. 4191: 4186: 4180:, p. 28. 4179: 4174: 4167: 4162: 4156:, p. 18. 4155: 4150: 4143: 4138: 4132:, p. 13. 4131: 4126: 4124: 4117:, p. 91. 4116: 4111: 4105:, p. 12. 4104: 4099: 4092: 4087: 4085: 4077: 4072: 4070: 4063:, p. 30. 4062: 4057: 4055: 4047: 4042: 4040: 4032: 4027: 4020: 4015: 4011: 4000: 3997: 3995: 3992: 3991: 3985: 3983: 3979: 3974: 3955: 3944: 3940: 3933: 3930: 3924: 3916: 3912: 3908: 3905: 3899: 3893: 3886: 3885: 3884: 3863: 3860: 3854: 3851: 3848: 3842: 3836: 3833: 3830: 3824: 3821: 3818: 3812: 3809: 3803: 3797: 3790: 3789: 3788: 3786: 3783: 3775: 3771: 3767: 3763: 3759: 3756: 3752: 3748: 3744: 3740: 3737: 3733: 3729: 3725: 3721: 3718: 3714: 3710: 3707: 3703: 3699: 3695: 3691: 3690: 3689: 3686: 3684: 3680: 3676: 3671: 3666: 3662: 3658: 3654: 3650: 3631: 3625: 3622: 3616: 3613: 3607: 3601: 3592: 3589: 3586: 3580: 3577: 3571: 3565: 3558: 3557: 3556: 3554: 3550: 3546: 3542: 3532: 3530: 3526: 3521: 3516: 3512: 3508: 3503: 3498: 3493: 3488: 3469: 3460: 3454: 3451: 3448: 3445: 3442: 3439: 3433: 3427: 3424: 3418: 3415: 3412: 3406: 3399: 3398: 3397: 3395: 3391: 3387: 3386: 3379: 3369: 3367: 3363: 3359: 3354: 3349: 3345: 3341: 3337: 3332: 3327: 3323: 3320:over a field 3319: 3309: 3307: 3302: 3300: 3296: 3292: 3288: 3284: 3280: 3277:over a field 3276: 3272: 3262: 3260: 3256: 3244: 3237: 3234: 3231: 3228: 3225: 3221: 3217: 3214: 3210: 3207: 3202: 3198: 3194: 3191: 3187: 3183: 3180: 3177: 3173: 3170: 3167: 3166: 3164: 3160: 3156: 3152: 3148: 3144: 3140: 3136: 3132: 3128: 3124: 3121: 3118: 3114: 3110: 3106: 3102: 3099: 3096: 3092: 3089:over a given 3088: 3084: 3080: 3076: 3072: 3069: 3068: 3067: 3061: 3057: 3053: 3050:algebra over 3049: 3045: 3042: 3038: 3034: 3031: 3028: 3024: 3021: 3018: 3014: 3010: 3006: 3002: 2998: 2995: 2991: 2988: 2985: 2982: 2979:(for general 2978: 2974: 2971: 2967: 2963: 2959: 2955: 2954:vector fields 2951: 2948: 2945: 2942: 2938: 2935: 2932: 2931: 2925: 2908: 2879: 2876: 2873: 2870: 2867: 2861: 2855: 2852: 2849: 2846: 2843: 2837: 2831: 2828: 2825: 2822: 2819: 2805: 2782: 2779: 2776: 2769: 2766: 2763: 2760: 2757: 2743: 2740: 2737: 2731: 2725: 2719: 2712: 2711: 2710: 2708: 2704: 2700: 2690: 2688: 2677: 2676: 2675: 2673: 2665: 2653: 2642: 2635: 2625: 2624: 2618: 2611: 2601: 2600: 2591:Alternative: 2590: 2584:Associative: 2583: 2582: 2581: 2566: 2564: 2548: 2534: 2530: 2526: 2522: 2517: 2516: 2515: 2501: 2495: 2492: 2489: 2486: 2483: 2480: 2474: 2471: 2468: 2465: 2462: 2452: 2448: 2444: 2440: 2434: 2421: 2417: 2414: 2413: 2412: 2408: 2398: 2394: 2389: 2386: 2382: 2377: 2374: 2373: 2372: 2368: 2358: 2354: 2349: 2346: 2342: 2337: 2334: 2333: 2332: 2328: 2318: 2314: 2311: 2310: 2309: 2305: 2295: 2291: 2288: 2285: 2281: 2278: 2275: 2271: 2267: 2264: 2261: 2257: 2253: 2250: 2247: 2243: 2239: 2236: 2231: 2227: 2223: 2222: 2220: 2216: 2213: 2212: 2211: 2207: 2197: 2193: 2189: 2186: 2185: 2184: 2180: 2173: 2169: 2160: 2156:nil of index 2153: 2150: 2146: 2142: 2136: 2132:nil of index 2129: 2123: 2120: 2116: 2113: 2110: 2106: 2103: 2100: 2096: 2093: 2090: 2083: 2077: 2074: 2070: 2067: 2064: 2060: 2057: 2054: 2050: 2047: 2044: 2040: 2037: 2034: 2030: 2027: 2024: 2020: 2017: 2014: 2010: 2007: 2002: 1998: 1994: 1993: 1991: 1987: 1983: 1979: 1976: 1972: 1969: 1968: 1967: 1965: 1946: 1935: 1930: 1924: 1919: 1916: 1909: 1905: 1898: 1892: 1885: 1877: 1873: 1866: 1860: 1853: 1842: 1837: 1834: 1829: 1824: 1817: 1812: 1807: 1803: 1800: 1795: 1791: 1787: 1784: 1779: 1778: 1775: 1771: 1760: 1757: 1753: 1750: 1743: 1735: 1730: 1725: 1718: 1715: 1710: 1705: 1701: 1698: 1694: 1691: 1686: 1682: 1678: 1675: 1670: 1669: 1666: 1662: 1651: 1647: 1644: 1637: 1629: 1624: 1620: 1616: 1612: 1606: 1603: 1598: 1594: 1590: 1586: 1578: 1574: 1570: 1566: 1560: 1557: 1552: 1548: 1544: 1540: 1532: 1528: 1524: 1520: 1517: 1511: 1508: 1503: 1499: 1495: 1491: 1487: 1483: 1476: 1472: 1468: 1464: 1460: 1456: 1450: 1447: 1443: 1439: 1434: 1431: 1427: 1423: 1418: 1415: 1410: 1406: 1402: 1398: 1392: 1389: 1385: 1381: 1375: 1371: 1367: 1358: 1355: 1354: 1353: 1350: 1346: 1340: 1337: 1333: 1327: 1323: 1292: 1290: 1272: 1267: 1265: 1260: 1258: 1253: 1252: 1250: 1249: 1241: 1238: 1236: 1233: 1231: 1228: 1226: 1223: 1221: 1218: 1216: 1213: 1211: 1208: 1207: 1203: 1200: 1199: 1195: 1190: 1189: 1182: 1181: 1177: 1176: 1172: 1169: 1167: 1164: 1162: 1159: 1158: 1153: 1148: 1147: 1140: 1139: 1135: 1133: 1130: 1129: 1125: 1122: 1120: 1117: 1115: 1112: 1110: 1107: 1105: 1102: 1100: 1097: 1096: 1091: 1086: 1085: 1080: 1079: 1072: 1069: 1067: 1066:Division ring 1064: 1062: 1059: 1057: 1054: 1052: 1049: 1047: 1044: 1042: 1039: 1037: 1034: 1032: 1029: 1027: 1024: 1023: 1018: 1013: 1012: 1007: 1006: 999: 996: 994: 991: 989: 988:Abelian group 986: 985: 981: 978: 976: 973: 971: 967: 964: 962: 959: 958: 954: 949: 948: 945: 942: 941: 938: 936: 933:-algebras as 888: 884: 880: 878: 873: 870: 865: 863: 859: 855: 854: 849: 845: 841: 840:endomorphisms 837: 833: 828: 826: 822: 818: 814: 810: 806: 802: 799: 796:if it has an 795: 791: 790: 784: 782: 777: 772: 770: 766: 762: 758: 754: 750: 746: 742: 738: 737:cross product 734: 730: 726: 722: 718: 714: 710: 706: 702: 698: 694: 691: 687: 684: 680: 676: 672: 668: 664: 652: 647: 645: 640: 638: 633: 632: 630: 629: 624: 623: 617: 613: 612: 611: 610: 609: 604: 603: 602: 597: 596: 595: 588: 584: 582: 578: 576: 572: 570: 569:Division ring 566: 565: 564: 563: 557: 552: 551: 523: 507: 505: 499: 483: 469: 468:-adic numbers 467: 462: 446: 432: 430: 425: 423: 419: 417: 410: 408: 404: 403: 402: 401: 400: 391: 387: 385: 381: 377: 373: 372: 371: 367: 365: 361: 359: 355: 353: 349: 347: 343: 341: 337: 336: 335: 331: 330: 329: 328: 322: 317: 316: 307: 303: 302: 301: 297: 293: 289: 287: 283: 282: 281: 277: 273: 269: 268: 267: 263: 262: 261: 260: 235: 231: 222: 219: 212: 211:Terminal ring 208: 185: 181: 180: 179: 175: 173: 169: 167: 163: 161: 157: 155: 151: 150: 149: 148: 147: 140: 136: 134: 130: 128: 124: 123: 122: 121: 120: 113: 109: 107: 103: 101: 97: 93: 89: 87: 83: 82: 81: 80:Quotient ring 77: 75: 71: 69: 65: 64: 63: 62: 53: 52: 49: 44:→ Ring theory 43: 39: 38: 33: 19: 5097: 5064: 5036: 5007: 4966: 4948: 4942: 4890: 4861: 4858:Mat. Sbornik 4857: 4834: 4828: 4792: 4759: 4751:Rost, Markus 4714: 4686: 4658: 4625: 4619: 4565: 4559: 4520: 4472:Koecher 1999 4467: 4455: 4443: 4431: 4426:, p. 4. 4424:Schafer 1995 4419: 4407: 4395: 4383: 4376:Schafer 1995 4361:Albert 1948a 4356: 4349:Albert 1948a 4344: 4332: 4320: 4313:Schafer 1995 4308: 4296: 4289:Mikheev 1976 4284: 4277:Albert 1948b 4272: 4265:Kokoris 1955 4260: 4253:Schafer 1995 4248: 4236: 4224: 4197: 4185: 4178:Schafer 1995 4173: 4161: 4149: 4144:, p. 5. 4142:Schafer 1995 4137: 4115:Schafer 1995 4110: 4098: 4093:, p. 3. 4091:Schafer 1995 4076:Schafer 1995 4061:Schafer 1995 4046:Albert 1948a 4033:, p. 1. 4031:Schafer 1995 4026: 4021:, Chapter 1. 4019:Schafer 1995 4014: 3970: 3882: 3784: 3781: 3779: 3773: 3769: 3765: 3761: 3754: 3750: 3746: 3742: 3735: 3731: 3727: 3723: 3716: 3712: 3705: 3701: 3697: 3693: 3687: 3682: 3678: 3674: 3669: 3664: 3660: 3656: 3652: 3648: 3646: 3552: 3548: 3544: 3540: 3538: 3524: 3519: 3506: 3501: 3496: 3491: 3486: 3484: 3393: 3389: 3383: 3381: 3365: 3361: 3357: 3352: 3347: 3343: 3339: 3335: 3330: 3325: 3321: 3317: 3315: 3303: 3298: 3294: 3290: 3286: 3282: 3278: 3274: 3270: 3268: 3255:zero divisor 3251: 3212: 3178: 3168: 3162: 3158: 3146: 3142: 3138: 3134: 3130: 3126: 3105:real numbers 3091:vector space 3065: 3051: 3016: 3012: 3008: 3004: 2980: 2972: 2965: 2961: 2952:Algebras of 2947:Lie algebras 2936: 2803: 2801: 2706: 2702: 2698: 2696: 2686: 2684: 2671: 2663: 2661: 2633: 2609: 2567: 2562: 2540: 2532: 2528: 2524: 2520: 2446: 2442: 2438: 2436: 2419: 2415: 2406: 2402: 2396: 2392: 2387: 2384: 2380: 2375: 2366: 2362: 2356: 2352: 2347: 2344: 2340: 2335: 2326: 2322: 2316: 2312: 2303: 2299: 2293: 2289: 2283: 2279: 2273: 2269: 2265: 2259: 2255: 2251: 2245: 2241: 2237: 2229: 2225: 2218: 2214: 2205: 2201: 2195: 2191: 2187: 2178: 2167: 2164: 2155: 2151: 2144: 2140: 2131: 2124: 2118: 2114: 2108: 2104: 2098: 2094: 2085: 2078: 2072: 2068: 2062: 2058: 2052: 2048: 2042: 2038: 2032: 2028: 2022: 2018: 2012: 2008: 2000: 1996: 1989: 1985: 1981: 1974: 1970: 1957: 1944: 1933: 1928: 1922: 1907: 1903: 1896: 1890: 1883: 1875: 1871: 1864: 1858: 1851: 1840: 1827: 1819: 1810: 1805: 1801: 1798: 1789: 1785: 1782: 1773: 1769: 1758: 1755: 1751: 1748: 1741: 1728: 1720: 1708: 1703: 1699: 1696: 1692: 1689: 1680: 1676: 1673: 1664: 1660: 1649: 1645: 1642: 1635: 1622: 1618: 1614: 1610: 1596: 1592: 1588: 1584: 1576: 1572: 1568: 1564: 1550: 1546: 1542: 1538: 1530: 1526: 1522: 1518: 1515: 1501: 1497: 1493: 1489: 1485: 1481: 1474: 1470: 1466: 1462: 1458: 1454: 1441: 1437: 1425: 1421: 1408: 1404: 1400: 1396: 1383: 1379: 1373: 1369: 1365: 1348: 1344: 1338: 1335: 1331: 1325: 1321: 1298: 1285: 1240:Hopf algebra 1214: 1178: 1171:Vector space 1136: 1076: 1005:Group theory 1003: 968: / 934: 886: 882: 876: 871: 866: 861: 857: 851: 847: 843: 835: 831: 829: 825:Lie algebras 816: 812: 808: 804: 800: 793: 787: 785: 775: 773: 768: 764: 760: 756: 752: 748: 744: 740: 725:Lie algebras 720: 716: 712: 704: 700: 697:vector space 692: 685: 666: 662: 660: 620: 606: 605: 601:Free algebra 599: 598: 592: 591: 560: 503: 465: 428: 397: 396: 376:Finite field 325: 272:Finite field 258: 257: 184:Initial ring 144: 143: 117: 116: 59: 4841:: 705–710. 4628:: 318–328. 4568:: 552–593. 4448:Albert 2003 4412:Kurosh 1947 3529:Lie algebra 3515:Lie bracket 3316:An algebra 3176:quaternions 3113:quaternions 2679:= = = {0} 2604:= − = − = − 2416:Commutative 2336:Commutative 2266:Commutative 2224:Similarly, 2192:commutative 2039:Alternative 2019:Commutative 2009:Alternative 1997:alternative 1975:alternative 1971:Associative 1559:Alternative 1417:Commutative 1391:Associative 1329:and either 1225:Lie algebra 1210:Associative 1114:Total order 1104:Semilattice 1078:Ring theory 827:never are. 695:if it is a 679:associative 581:Simple ring 292:Jordan ring 166:Graded ring 48:Ring theory 5084:0145.25601 5027:0867.53002 4998:0841.17001 4930:1044.17001 4878:0041.16803 4816:1072.17513 4783:0955.16001 4608:0033.15402 4544:0023.19901 4509:References 4436:Okubo 2005 4400:Rowen 2008 4202:Okubo 2005 4190:Okubo 2005 4154:Okubo 2005 4130:Okubo 2005 4103:Okubo 2005 3511:commutator 3385:derivation 3248:Properties 3241:See also: 3150:octonions. 2994:commutator 2674:such that 2619:Flexible: 2439:associator 2433:Associator 2427:Associator 2329:) ∉ {2,3,5 1856:elements: 1289:identities 673:where the 587:Commutator 346:GCD domain 5095:(1982) . 5068:. Dover. 5062:(1995) . 4664:CRC Press 4584:0002-9947 4554:(1948a). 4518:(2003) . 4006:Citations 3931:− 3861:⋅ 3852:⋅ 3843:− 3834:⋅ 3825:⋅ 3816:↦ 3620:↦ 3584:↦ 3517:gives Der 3452:⋅ 3440:⋅ 3416:⋅ 3392:is a map 3293:is just ( 3273:on a set 3259:sedenions 3197:sedenions 3186:octonions 3117:octonions 3041:sedenions 3027:octonions 2780:∈ 2774:∀ 2741:∈ 2514:given by 2499:→ 2493:× 2487:× 2475:⋅ 2469:⋅ 2463:⋅ 1920:of index 1838:of index 1836:Nilpotent 1235:Bialgebra 1041:Near-ring 998:Lie group 966:Semigroup 821:octonions 733:octonions 528:∞ 306:Semifield 5120:Category 4888:(2004). 4757:(1998). 4712:(1968). 3988:See also 3661:centroid 3509:). The 3499:) in End 3364:and the 2975:) or an 2928:Examples 2282:implies 2256:flexible 2246:flexible 2228:implies 2217:implies 2130:implies 2117:implies 2107:implies 2097:implies 2084:implies 2051:implies 2049:Flexible 2041:implies 2033:flexible 2031:implies 2023:flexible 2021:implies 2011:implies 2001:flexible 1999:implies 1990:flexible 1973:implies 1942:so that 1825:for all 1766:so that 1726:for all 1657:so that 1605:Flexible 1363:so that 1071:Lie ring 1036:Semiring 856:and the 815:for all 709:bilinear 669:) is an 300:Semiring 286:Lie ring 68:Subrings 4922:2014924 4870:0020986 4738:0251099 4642:1969457 4600:0027750 4592:1990399 3679:central 3360:), the 3304:Kurosh 3157:(where 3017:special 2968:or the 2664:nucleus 2445:is the 1962:of any 1813:above). 1768:0 < 1711:below). 1659:0 < 1202:Algebra 1194:Algebra 1099:Lattice 1090:Lattice 879:-module 794:unitary 502:Prüfer 104:•  5105:  5082:  5072:  5048:  5025:  5015:  4996:  4986:  4934:Errata 4928:  4920:  4910:  4876:  4868:  4864:(62). 4814:  4804:  4781:  4771:  4736:  4726:  4698:  4670:  4640:  4606:  4598:  4590:  4582:  4542:  4532:  3953:  3867:  3629:  3599:  3596:  3467:  3306:proved 3085:, and 2755:  2747:  2699:center 2693:Center 2313:Unital 2290:Unital 2238:Unital 2152:Unital 1995:Thus, 1988:, and 1357:Unital 1230:Graded 1161:Module 1152:Module 1051:Domain 970:Monoid 789:unital 731:, the 154:Module 127:Kernel 4837:(5). 4654:(PDF) 4638:JSTOR 4588:JSTOR 4482:Notes 3338:) of 3037:GF(2) 2956:on a 2636:) ≠ 2 2632:char( 2612:) ≠ 2 2608:char( 2409:) = 2 2405:char( 2369:) = 0 2365:char( 2325:char( 2306:) ≠ 3 2302:char( 2208:) ≠ 2 2204:char( 2181:) ≤ 3 2172:GF(2) 2137:with 1772:< 1663:< 1504:) = 0 1196:-like 1154:-like 1092:-like 1061:Field 1019:-like 993:Magma 961:Group 955:-like 953:Group 874:: An 846:as a 803:with 699:over 690:field 506:-ring 370:Field 266:Field 74:Ideal 61:Rings 5103:ISBN 5070:ISBN 5046:ISBN 5013:ISBN 4984:ISBN 4908:ISBN 4802:ISBN 4769:ISBN 4724:ISBN 4696:ISBN 4668:ISBN 4580:ISSN 4530:ISBN 3780:The 3768:) = 3647:The 3543:and 3269:The 3218:The 3195:the 3188:(an 3184:the 3174:the 3153:The 3141:and 3058:for 3046:The 2960:(if 2898:are 2804:C(A) 2697:The 2662:The 2576:and 2568:Let 2437:The 2418:and 2378:and 2338:and 2315:and 2292:and 2268:and 2254:and 2240:and 2190:and 2177:dim( 2154:and 2139:2 ≤ 2071:and 2061:and 1958:For 1931:and 1496:) + 1488:) + 1307:and 1299:Let 1026:Ring 1017:Ring 759:and 747:), ( 665:(or 5080:Zbl 5023:Zbl 4994:Zbl 4976:doi 4953:doi 4926:Zbl 4900:doi 4874:Zbl 4843:doi 4812:Zbl 4779:Zbl 4630:doi 4604:Zbl 4570:doi 4540:Zbl 3663:of 3655:of 3651:or 3388:on 3161:is 3007:= ( 3005:x*y 2964:is 2701:of 2670:in 2656:= 0 2649:= 0 2647:or 2645:= 0 2628:= − 2621:= 0 2597:= 0 2593:= 0 2586:= 0 2519:= ( 2441:on 2403:If 2363:If 2331:}: 2323:If 2300:If 2202:If 2175:or 2165:If 1947:≠ 0 1936:= 0 1925:≥ 2 1918:Nil 1912:≠ 0 1879:= 0 1843:≥ 2 1830:≥ 2 1744:≥ 2 1731:≥ 2 1638:≥ 2 1535:or 1479:or 1477:= 0 1469:+ ( 1461:+ ( 1440:= − 1031:Rng 864:". 842:of 792:or 5122:: 5078:. 5044:. 5021:. 4992:. 4982:. 4974:. 4949:17 4947:. 4932:. 4924:. 4918:MR 4916:. 4906:. 4898:. 4872:. 4866:MR 4862:20 4860:. 4833:. 4827:. 4810:. 4800:. 4777:. 4767:. 4753:; 4749:; 4734:MR 4732:. 4722:. 4694:. 4666:. 4636:. 4626:50 4624:. 4602:. 4596:MR 4594:. 4586:. 4578:. 4566:64 4564:. 4558:. 4538:. 4528:. 4490:^ 4368:^ 4209:^ 4122:^ 4083:^ 4068:^ 4053:^ 4038:^ 3757:); 3738:); 3708:); 3555:: 3531:. 3382:A 3368:. 3297:)( 3289:, 3203:). 3192:); 3135:sx 3133:+ 3131:re 3129:= 3127:xx 3081:, 3013:yx 3009:xy 2983:); 2689:. 2623:. 2572:, 2565:. 2533:yz 2527:− 2521:xy 2411:: 2383:= 2371:: 2343:= 2308:: 2221:. 2210:: 2183:: 2170:≠ 2143:≤ 1984:, 1966:: 1927:: 1910:−1 1886:−1 1854:−1 1806:xx 1804:= 1790:xx 1788:= 1777:. 1754:= 1746:: 1704:xx 1702:= 1695:= 1681:xx 1679:= 1668:. 1648:= 1640:: 1623:yx 1617:= 1611:xy 1607:: 1597:xx 1591:= 1585:yx 1577:xy 1571:= 1565:xx 1561:: 1551:yx 1545:= 1539:xy 1531:yx 1525:= 1512:: 1502:xy 1494:zx 1486:yz 1471:zx 1463:yz 1455:xy 1451:: 1442:yx 1438:xy 1435:: 1426:yx 1424:= 1422:xy 1419:: 1409:yz 1403:= 1397:xy 1393:: 1382:≝ 1374:xe 1372:= 1368:= 1366:ex 1349:xx 1347:≝ 1334:≝ 1324:≝ 1303:, 937:. 813:xe 811:= 807:= 805:ex 783:. 769:cd 755:)) 753:bc 745:cd 743:)( 741:ab 727:, 719:→ 715:× 661:A 614:• 585:• 579:• 573:• 567:• 500:• 463:• 426:• 420:• 411:• 405:• 388:• 382:• 374:• 368:• 362:• 356:• 350:• 344:• 338:• 332:• 304:• 298:• 290:• 284:• 278:• 270:• 264:• 209:• 182:• 176:• 170:• 164:• 158:• 152:• 137:• 131:• 125:• 110:• 98:• 90:• 84:• 78:• 72:• 66:• 5111:. 5086:. 5054:. 5029:. 5000:. 4978:: 4959:. 4955:: 4936:. 4902:: 4880:. 4851:. 4845:: 4835:6 4818:. 4785:. 4740:. 4704:. 4676:. 4644:. 4632:: 4610:. 4572:: 4546:. 4501:. 3956:. 3950:) 3945:2 3941:a 3937:( 3934:L 3928:) 3925:a 3922:( 3917:2 3913:L 3909:2 3906:= 3903:) 3900:a 3897:( 3894:Q 3879:, 3864:x 3858:) 3855:a 3849:a 3846:( 3840:) 3837:x 3831:a 3828:( 3822:a 3819:2 3813:x 3810:: 3807:) 3804:a 3801:( 3798:Q 3785:Q 3774:a 3772:( 3770:L 3766:a 3764:( 3762:L 3755:a 3753:( 3751:R 3747:a 3745:( 3743:L 3736:a 3734:( 3732:R 3728:a 3726:( 3724:L 3719:; 3717:R 3713:L 3706:a 3704:( 3702:R 3698:a 3696:( 3694:L 3683:K 3675:A 3673:( 3670:K 3665:A 3657:A 3632:. 3626:a 3623:x 3617:x 3614:: 3611:) 3608:a 3605:( 3602:R 3593:; 3590:x 3587:a 3581:x 3578:: 3575:) 3572:a 3569:( 3566:L 3553:A 3549:a 3545:R 3541:L 3525:A 3523:( 3520:K 3507:A 3505:( 3502:K 3497:A 3495:( 3492:K 3487:A 3470:. 3464:) 3461:y 3458:( 3455:D 3449:x 3446:+ 3443:y 3437:) 3434:x 3431:( 3428:D 3425:= 3422:) 3419:y 3413:x 3410:( 3407:D 3394:D 3390:A 3358:A 3356:( 3353:K 3348:A 3344:A 3340:K 3336:A 3334:( 3331:K 3326:K 3322:K 3318:A 3299:v 3295:u 3291:v 3287:u 3283:X 3279:K 3275:X 3213:R 3179:H 3169:C 3163:R 3159:K 3147:e 3143:s 3139:r 3097:. 3062:. 3052:R 3043:. 3019:. 3011:+ 2981:K 2973:C 2966:R 2962:K 2937:R 2912:} 2909:0 2906:{ 2886:) 2883:] 2880:n 2877:, 2874:A 2871:, 2868:A 2865:[ 2862:, 2859:] 2856:A 2853:, 2850:n 2847:, 2844:A 2841:[ 2838:, 2835:] 2832:A 2829:, 2826:A 2823:, 2820:n 2817:[ 2814:( 2787:} 2783:A 2777:r 2770:n 2767:r 2764:= 2761:r 2758:n 2751:| 2744:A 2738:n 2735:{ 2732:= 2729:) 2726:A 2723:( 2720:C 2707:A 2703:A 2687:A 2681:. 2672:A 2668:n 2658:. 2638:. 2634:K 2614:. 2610:K 2588:. 2578:z 2574:y 2570:x 2563:A 2549:A 2537:. 2535:) 2531:( 2529:x 2525:z 2523:) 2502:A 2496:A 2490:A 2484:A 2481:: 2478:] 2472:, 2466:, 2460:[ 2449:- 2447:K 2443:A 2407:K 2399:. 2388:x 2385:x 2381:x 2367:K 2359:. 2348:x 2345:x 2341:x 2327:K 2304:K 2286:. 2276:. 2262:. 2248:. 2232:. 2206:K 2198:. 2179:A 2168:K 2158:n 2148:. 2145:n 2141:N 2134:N 2127:n 2121:. 2111:. 2101:. 2091:. 2087:n 2080:n 2055:. 2045:. 2035:. 2025:. 2015:. 2003:. 1977:. 1960:K 1949:. 1945:y 1940:y 1934:x 1923:n 1908:n 1904:y 1902:… 1900:2 1897:y 1894:1 1891:y 1884:n 1876:n 1872:x 1870:… 1868:2 1865:x 1862:1 1859:x 1852:n 1847:n 1841:n 1832:. 1828:n 1821:n 1802:x 1799:x 1793:. 1786:x 1783:x 1774:n 1770:k 1764:k 1759:x 1756:x 1752:x 1749:x 1742:n 1737:n 1733:. 1729:n 1722:n 1700:x 1697:x 1693:x 1690:x 1684:. 1677:x 1674:x 1665:n 1661:k 1655:k 1650:x 1646:x 1643:x 1636:n 1631:n 1627:. 1625:) 1621:( 1619:x 1615:x 1613:) 1609:( 1599:) 1595:( 1593:y 1589:x 1587:) 1583:( 1579:) 1575:( 1573:x 1569:y 1567:) 1563:( 1553:) 1549:( 1547:x 1543:x 1541:) 1537:( 1533:) 1529:( 1527:x 1523:x 1521:) 1519:y 1516:x 1514:( 1500:( 1498:z 1492:( 1490:y 1484:( 1482:x 1475:y 1473:) 1467:x 1465:) 1459:z 1457:) 1453:( 1445:. 1429:. 1413:. 1411:) 1407:( 1405:x 1401:z 1399:) 1395:( 1387:. 1384:e 1380:x 1370:x 1361:e 1345:x 1339:x 1336:x 1332:x 1326:x 1322:x 1317:K 1313:A 1309:z 1305:y 1301:x 1270:e 1263:t 1256:v 920:Z 898:Z 887:R 883:R 877:R 872:R 862:A 848:K 844:A 838:- 836:K 832:A 817:x 809:x 801:e 767:( 765:b 763:( 761:a 757:d 751:( 749:a 721:A 717:A 713:A 707:- 705:K 701:K 693:K 686:A 650:e 643:t 636:v 533:) 524:p 520:( 516:Z 504:p 484:p 479:Q 466:p 447:p 442:Z 429:p 415:n 240:Z 236:1 232:/ 227:Z 223:= 220:0 194:Z 34:. 20:)

Index

Nonassociative algebra
Non-associativity
Algebraic structure
Ring theory
Rings
Subrings
Ideal
Quotient ring
Fractional ideal
Total ring of fractions
Product of rings
Free product of associative algebras
Tensor product of algebras
Ring homomorphisms
Kernel
Inner automorphism
Frobenius endomorphism
Algebraic structures
Module
Associative algebra
Graded ring
Involutive ring
Category of rings
Initial ring
Terminal ring
Field
Finite field
Non-associative ring
Lie ring
Jordan ring

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