吉林大学学报(理学版) ›› 2022, Vol. 60 ›› Issue (4): 800-804.

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Frobenius扩张下的GC-平坦性

周绪杰, 赵志兵   

  1. 安徽大学 数学科学学院, 合肥 230601
  • 收稿日期:2021-09-26 出版日期:2022-07-26 发布日期:2022-07-26
  • 通讯作者: 赵志兵 E-mail:zbzhao@ahu.edu.cn

GC-Flatness under Frobenius Extensions

ZHOU Xujie, ZHAO Zhibing   

  1. School of Mathematical Sciences, Anhui University, Hefei 230601, China
  • Received:2021-09-26 Online:2022-07-26 Published:2022-07-26

摘要: 设A/S是一个环的Frobenius扩张, 且S是凝聚环, C是半对偶S-模. 首先, 利用构造法证明相对于半对偶模的GC-平坦性在环的Frobenius扩张下是保持的, 即对于A-模M, MAGCSA-平坦模当且仅当MSGC-平坦的; 其次, 证明相对于半对偶模的GC-平坦维数在环的Frobenius扩张下是不变的.

关键词: 半对偶模;  , GC-平坦模;  , GC-平坦维数; Frobenius扩张

Abstract: Let A/S be a Frobenius extension of rings with S coherent and C a semidualizing S-module. Firstly, we prove that GC-flatness with respect to a semidualizing module is invariant under Frobenius extensions by using the construction method, that is, for an A-module M, MA is GCSA-flat module if and only if MS is GC-flat. Secondly,  we prove that GC-flat dimension with respect to a semidualizing module is preserved under Frobenius extensions.

Key words: semidualizing module, GC-flat module, GC-flat dimension, Forbenius extension

中图分类号: 

  • O154.2