摘要
引入多余余满可缩模与本质满可缩模,得到了多余余满可缩模具有Morita不变性,证明了在Morita对偶下多余余满可缩模与本质满可缩模构成了Morita对偶对.同时研究了多余余满可缩环的性质,证明了右多余余满可缩的右PP环是半本原环.
Introduce superfluous co-epi-retractable modules and essential epi-retractable mod- ules, obtain that being superfluous co-epi-retractable modules is a Morita invariant, and prove that superfluous co-epi-retractable modules and essential epi-retractable modules are dual each other un- der Morita duality. Also study the characterizations of superfluous co-epi-retractable rings, show thatevery right superfluous co-epi-retractable and right PP ring is semiprimitive.
出处
《福建师范大学学报(自然科学版)》
CAS
CSCD
北大核心
2013年第6期6-9,共4页
Journal of Fujian Normal University:Natural Science Edition
关键词
多余余满可缩模
本质满可缩模
半本原环
superfluous co-epi-retractable module
essential epi-retractable module
semiprimitive ring