山东大学学报(理学版) ›› 2017, Vol. 52 ›› Issue (11): 92-94.doi: 10.6040/j.issn.1671-9352.0.2017.008
王小青,梁力*
WANG Xiao-qing, LIANG Li*
摘要: 研究了强余挠模的忠实平坦余基变换。令R是环,S是忠实平坦R-代数,在一些额外的条件之下,证明了R-模G是强余挠的当且仅当HomR(S,G)是强余挠R-模且Ext>0R(S,G)=0;当且仅当HomR(S,G)是强余挠S-模且Ext>0R(S,G)=0。
中图分类号:
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