Frobenius 扩张上的 Gorenstein 投射与内射维数
K理论与同调
2019-07-15 v4
摘要
设 为环的 Frobenius 扩张。我们证明:(1) 对任意左 -模 , 是 Gorenstein 投射(内射)的当且仅当其底层左 -模 是 Gorenstein 投射(内射)的。(2) 若 ,则 ,对 Gorenstein 内射维数的对偶结论亦成立。(3) 若该扩张为分裂的,则 。
引用
@article{arxiv.1801.07305,
title = {Gorenstein projective and injective dimensions over Frobenius extensions},
author = {Wei Ren},
journal= {arXiv preprint arXiv:1801.07305},
year = {2019}
}
备注
A corrigendum version of Comm. Algebra,46(12):5348-5354, 2018. A typo in Proposition 3.2 is fixed, and the assumption that the extension is split is added for Theorem 3.3, 3.4, and Corollary 3.5. arXiv admin note: text overlap with arXiv:1707.05885