Generalized tilting modules and Frobenius extensions

Autor: Dongxing Fu, Xiaowei Xu, Zhibing Zhao
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Electronic Research Archive, Vol 30, Iss 9, Pp 3337-3350 (2022)
Druh dokumentu: article
ISSN: 2688-1594
DOI: 10.3934/era.2022169?viewType=HTML
Popis: Let $ A/S $ be a ring extension with $ S $ commutative. We prove that $ \omega{\otimes}_SA_A $ is a generalized tilting module if $ \omega_S $ is a generalized tilting module. In this case, we obtain that $ ^\bot \omega $-resol.dim$ _S(M) $ and $ ^\bot (\omega\otimes_SA) $-resol.dim$ _A(M) $ are identical for any $ A $-module $ M $. As an application, we show that $ S $ satisfies gorenstein symmetric Conjecture if and only if so does $ A $. Furthermore, we introduce the concept of $ ^\bot\omega $-Gorenstein projective modules, and we obtain that the relative Gorenstein projectivity is invariant under Frobenius extensions.
Databáze: Directory of Open Access Journals
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