吉林大学学报(理学版) ›› 2024, Vol. 62 ›› Issue (4): 781-786.

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平凡环扩张上的强Ding投射模

李润华, 张翠萍   

  1. 西北师范大学 数学与统计学院, 兰州 730070
  • 收稿日期:2023-11-07 出版日期:2024-07-26 发布日期:2024-07-26
  • 通讯作者: 张翠萍 E-mail:zhangcp@nwnu.edu.cn

Strongly Ding Projective Modules over Trivial Ring Extensions

LI Runhua, ZHANG Cuiping   

  1. College of Mathematics and Statistics, Northwest Normal University, Lanzhou 730070, China
  • Received:2023-11-07 Online:2024-07-26 Published:2024-07-26

摘要: 设R<M是平凡环扩张, 其中R是环, M是(R,R)-双模. 在特定条件下, 证明(X,α)是强Ding投射左R<M模, 并且coker(α)是强Ding投射左R-模.

关键词: 平凡扩张, Ding投射模, 强Ding投射模

Abstract: Let R<M be a trivial ring extension, where R be a ring, M be an (R,R)-bimodule. We prove that (X,α) is a strongly Ding projective left R<M-module,and coker(α) is a strongly Ding projective left R-module under certain conditions.

Key words: trivial extension, Ding projective module, strongly Ding projective module

中图分类号: 

  • O153.3