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arXiv math/0509148math.RA
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换向器环

Commutator rings

Zachary Mesyan

摘要:

一个环称为换位子环,如果每个元素都是加法换位子的和。在本文中,我们给出这样的环的例子。特别地,我们证明了给定任意环R,右R模N和集合X,End_R(\bigoplus_X N)和End_R(\prod_X N)是换位子环当且仅当X是无限的或者End_R(N)本身是换位子环.我们还证明了在任何环上,迹为零的矩阵可以表示为两个矩阵的和。

英文摘要:

A ring is called a commutator ring if every element is a sum of additive commutators. In this paper we give examples of such rings. In particular, we show that given any ring R, a right R-module N, and a set X, End_R(\bigoplus_X N) and End_R(\prod_X N) are commutator rings if and only if either X is infinite or End_R(N) is itself a commutator ring. We also prove that over any ring, a matrix having trace zero can be expressed as a sum of two commutators.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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