兰州理工大学学报 ›› 2021, Vol. 47 ›› Issue (2): 151-155.

• 数理科学 • 上一篇    下一篇

小R-投射模

王永铎*, 李霞   

  1. 兰州理工大学 理学院, 甘肃 兰州 730050
  • 收稿日期:2019-12-19 出版日期:2021-04-28 发布日期:2021-05-11
  • 通讯作者: 王永铎(1974-),男,甘肃靖远人,博士,教授.Email:ydwang@lut.edu.cn
  • 基金资助:
    国家自然科学基金(11861043)

Small R-projective modules

WANG Yong-duo, LI Xia   

  1. School of Science, Lanzhou Univ. of Tech., Lanzhou 730050, China
  • Received:2019-12-19 Online:2021-04-28 Published:2021-05-11

摘要: 引入了小N-投射模和小R-投射模的概念,研究了它们的基本性质.证明了环R是半本原环当且仅当每个右R-模是小R-投射模.

关键词: 小N-投射模, 小R-投射模, 半本原环, 半完备环

Abstract: The concepts of small N-projective modules and small R-projective modules are introduced, basic properties of these modules are studied. It is proved that a ring R is a semiprimitive ring if and only if every right R-module is a small R-projective module.

Key words: small N-projective modules, small R-projective modules, semiprimitive rings, semiperfect rings

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