C-Gorenstein projective, injective, flat modules and trivial ring extensions

被引:0
作者
Mao, Lixin [1 ]
机构
[1] Nanjing Inst Technol, Sch Math & Phys, Nanjing 211167, Peoples R China
基金
中国国家自然科学基金;
关键词
Semidualizing module; trivial extension; DIMENSION; COVERS;
D O I
10.1515/gmj-2025-2045
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
Let C be a semidualizing module over a commutative ring R and let R & ltimes; C {R\ltimes C} be the trivial extension of R by C. We prove that (1) ( M , f ) {(M,f)} is a Gorenstein projective R & ltimes; C {R\ltimes C} -module if and only if M is a C-Gorenstein projective R-module; (2) [ M , g ] {[M,g]} is a Gorenstein injective R & ltimes; C {R\ltimes C} -module if and only if M is a C-Gorenstein injective R-module; (3) if R is a coherent ring, then ( M , f ) {(M,f)} is a Gorenstein flat R & ltimes; C {R\ltimes C} -module if and only if M is a C-Gorenstein flat R-module. Some applications of these results are given.
引用
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页数:10
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