Difference between revisions of "Wedderburn-Artin theorem"
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| − | A theorem which fully describes the structure of associative Artinian rings (cf. [[Artinian ring|Artinian ring]]) without nilpotent ideals. An associative ring | + | {{TEX|done}} |
| + | A theorem which fully describes the structure of associative Artinian rings (cf. [[Artinian ring|Artinian ring]]) without nilpotent ideals. An associative ring $R$ (cf. [[Associative rings and algebras|Associative rings and algebras]]) has the minimum condition for right ideals and has no nilpotent ideals if and only if $R$ is the direct sum of a finite number of ideals, each of which is isomorphic to a complete ring of matrices of finite order over a suitable skew-field; this decomposition into a direct sum is unique apart from the ordering of its terms. This theorem was first obtained by J. Wedderburn for finite-dimensional algebras over a field, and was proved by E. Artin [[#References|[1]]] in its final formulation. | ||
====References==== | ====References==== | ||
Revision as of 14:43, 15 April 2014
A theorem which fully describes the structure of associative Artinian rings (cf. Artinian ring) without nilpotent ideals. An associative ring $R$ (cf. Associative rings and algebras) has the minimum condition for right ideals and has no nilpotent ideals if and only if $R$ is the direct sum of a finite number of ideals, each of which is isomorphic to a complete ring of matrices of finite order over a suitable skew-field; this decomposition into a direct sum is unique apart from the ordering of its terms. This theorem was first obtained by J. Wedderburn for finite-dimensional algebras over a field, and was proved by E. Artin [1] in its final formulation.
References
| [1] | E. Artin, "The influence of J.H.M. Wedderburn on the development of modern algebra" Bull. Amer. Math. Soc. , 56 (1950) pp. 65–72 |
Comments
References
| [a1] | J.H.M. Wedderburn, "Lectures on matrices" , Dover, reprint (1964) |
| [a2] | C. Faith, "Algebra: rings, modules, and categories" , 1 , Springer (1973) pp. 380, 369 |
| [a3] | P.M. Cohn, "Algebra" , 2 , Wiley (1989) pp. 174ff |
How to Cite This Entry:
Wedderburn-Artin theorem. Encyclopedia of Mathematics. URL: http://encyclopediaofmath.org/index.php?title=Wedderburn-Artin_theorem&oldid=23125
Wedderburn-Artin theorem. Encyclopedia of Mathematics. URL: http://encyclopediaofmath.org/index.php?title=Wedderburn-Artin_theorem&oldid=23125
This article was adapted from an original article by K.A. Zhevlakov (originator), which appeared in Encyclopedia of Mathematics - ISBN 1402006098. See original article