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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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交换环上的强w-投射模
, PP. 148-151
Keywords: 强w-投射模,遗传环,DW-环
Abstract:
设R是交换环,R-模P称为强w-投射模,是指对任意的无挠w-模M,都有Ext1R(P,M)=0.证明了强w-投射模或者是投射模,或者其投射维数不低于2.通过对强w-投射模的讨论,给出了半单环、DW-环和遗传环的新刻画.
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