On self-injective perfect rings

被引:6
作者
Herbera, D
Shamsuddin, A
机构
[1] AMER UNIV BEIRUT,DEPT MATH,BEIRUT,LEBANON
[2] UNIV AUTONOMA BARCELONA,DEPT MATEMAT,E-08193 BARCELONA,SPAIN
来源
CANADIAN MATHEMATICAL BULLETIN-BULLETIN CANADIEN DE MATHEMATIQUES | 1996年 / 39卷 / 01期
关键词
perfect rings; self-injective rings; quasi-Frobenius rings; injective envelope; semi-local rings;
D O I
10.4153/CMB-1996-007-8
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
Let R be a left and right perfect right self-injective ring. It is shown that if the radical of R is countably generated as a left ideal then R is quasi-Frobenius. It is also shown that the same conclusion can be drawn if r(A boolean AND B) = r(A) + r(B) for all left ideals A and B of R.
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页码:55 / 58
页数:4
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