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半单环的几个特征
引用本文:黎奇升 庹清. 半单环的几个特征[J]. 吉首大学学报(自然科学版), 1998, 19(3): 13-15
作者姓名:黎奇升 庹清
作者单位:吉首大学数学与计算机科学系!吉首,416000,吉首大学数学与计算机科学系!吉首,416000
摘    要:本文利用准正则环、SF─环、P─内射性给出了半单环的几个新刻画。

关 键 词:半单环  准正则环  SF─环  P─内射

Several Characterizations of Semisimple Rings
Li Qishen, Tuo Qin. Several Characterizations of Semisimple Rings[J]. Journal of Jishou University(Natural Science Edition), 1998, 19(3): 13-15
Authors:Li Qishen   Tuo Qin
Abstract:In this paper, we prove the following main results: For a given ring R, the followingconditions are equivalent:(1) R is a semisimple ring,(2) Each one-sided ideal E=0 contains an. idempotent and R contains no infinite pair-wise orthogonal idempotents,(3) Each maximal essential right ideal I of R is finitely generated and P-injective,(4) Each maximal essential left ideal L of R is finitely generated and P-injective.
Keywords:semisimple rings   quasi-regular rings   SF-rings   P-injective
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