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arXiv · 1205.5985

Local cohomology modules and Gorenstein injectivity with respect to a semidualizing module

Majid Rahro Zargar
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Abstract

Let $(R,\fm)$ be a local ring and let $C$ be a semidualizing $R$--module. In this paper, we are concerned in $C$--injective and $G_{C}$--injective dimensions of certain local cohomology modules of $R$. Firstly, the injective dimension of $C$ and the above quantities of dimensions is compared. Then, as an application of the above comparisons, a characterization of a dualizing module of $R$ is given. Finally, it is shown that if $R$ is Cohen-Macaulay of dimension $d$ such that $\H_{\fm}^{d}(C)$ is $C$--injective, then $R$ is Gorernstein. This is an answer to the question which was recently presented.

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Majid Rahro Zargar. 2012-05-27. Local cohomology modules and Gorenstein injectivity with respect to a semidualizing module. https://arxiv.org/abs/1205.5985

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