A certain Abelian category of weakly cofinite modules

Let $R$ be a commutative Noetherian ring, $I$ an ideal of $R$ and $M$ an arbitrary $R$-module. We show that if the set $X=\cup_{i\geq 2}{\rm Supp}_R({\rm H}^{i}_{I}(R))$ is finite, then the category of all weakly cofinite modules with respect to the ideal $I$ of $R$ is an Abelian subcategory of the category of $R$-modules. In particular, it is true whenever ${\rm q}(I,R)\leq 1$.

Authors

Institutions

Publication Details

Journal
International Electronic Journal of Algebra
Published
2026-02-15
DOI
https://doi.org/10.24330/ieja.1889754
Primary Topic
Commutative Algebra and Its Applications
Type
article
Field-Weighted Citation Impact
0.00
Controls
|||
ALL TIME
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
article

A certain Abelian category of weakly cofinite modules

Moharram Aghapournahr, Nader Omidi
International Electronic Journal of Algebra
Commutative Algebra and Its Applications
article

A certain Abelian category of weakly cofinite modules

Moharram Aghapournahr, Nader Omidi
article en

Abstract

Let $R$ be a commutative Noetherian ring, $I$ an ideal of $R$ and $M$ an arbitrary $R$-module. We show that if the set $X=\cup_{i\geq 2}{\rm Supp}_R({\rm H}^{i}_{I}(R))$ is finite, then the category of all weakly cofinite modules with respect to the ideal $I$ of $R$ is an Abelian subcategory of the category of $R$-modules. In particular, it is true whenever ${\rm q}(I,R)\leq 1$.

International Electronic Journal of Algebra(Advanced Online Publication)
Islamic Azad University, Tehran (IR), Arak University (IR)
Openalex Percentile: Top 50%
Commutative Algebra and Its Applications
AI Navigator

Ask Laika to Summarize, Analyze, and Connect papers live on the map.

Summarize Papers & Methodologies

Extract key findings, datasets, and comparative methods across publications.

Benchmark Rankings & Visual Analytics

Rank top research institutions, authors, funders, topics, and journals by Field-Weighted Citation Impact (FWCI) and paper volume with instant charts.

Connect Distant Disciplines

Bridge topological clusters on the map to find hidden collaborative intersections.

A certain Abelian category of weakly cofinite modules — Moharram Aghapournahr, Nader Omidi · International Electronic Journal of Algebra (2026) | TGRS Research Map | TGRS