Serre subcategory, generalized local homology and generalized local cohomology modules

This paper deals with generalized local homology and generalized local cohomology modules belong to a Serre category of the category of $R$-modules under some conditions. For an ideal $I$ of $R$, the concept of the condition $C^I$ on a Serre category which is dual to the condition $C_I$ of Melkersson is defined. As a main result, it is shown that for a finitely generated $R$-module $M$ with $pd(M) <\infty$ and a minimax $R$-module $N$ of any Serre category $\mathcal{S}$ satisfying the condition $C^I$, the generalized local homology $\text{H}^I_i(M,N)$ belongs to $\mathcal{S}$ for all $i>pd(M)$. Also, if $\mathcal{S}$ satisfies the condition $C_I$, then the generalized local cohomology module $\text{H}^i_I(M,N)\in \mathcal{S}$ for all $i>pd(M)$.

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Publication Details

Journal
International Electronic Journal of Algebra
Published
2025-02-16
DOI
https://doi.org/10.24330/ieja.1640842
Primary Topic
Algebraic structures and combinatorial models
Type
article
Field-Weighted Citation Impact
0.00
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article

Serre subcategory, generalized local homology and generalized local cohomology modules

Marziyeh Hatamkhani
International Electronic Journal of Algebra
Algebraic structures and combinatorial models
article

Serre subcategory, generalized local homology and generalized local cohomology modules

Marziyeh Hatamkhani
article en

Abstract

This paper deals with generalized local homology and generalized local cohomology modules belong to a Serre category of the category of $R$-modules under some conditions. For an ideal $I$ of $R$, the concept of the condition $C^I$ on a Serre category which is dual to the condition $C_I$ of Melkersson is defined. As a main result, it is shown that for a finitely generated $R$-module $M$ with $pd(M) <\infty$ and a minimax $R$-module $N$ of any Serre category $\mathcal{S}$ satisfying the condition $C^I$, the generalized local homology $\text{H}^I_i(M,N)$ belongs to $\mathcal{S}$ for all $i>pd(M)$. Also, if $\mathcal{S}$ satisfies the condition $C_I$, then the generalized local cohomology module $\text{H}^i_I(M,N)\in \mathcal{S}$ for all $i>pd(M)$.

International Electronic Journal of AlgebraVol. 38(38)
Arak University (IR)
Openalex Percentile: Top 94%
Algebraic structures and combinatorial models
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