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Article . 2016
Data sources: zbMATH Open
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Article . 2016
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ARTINIANNESS OF COMPOSED LOCAL COHOMOLOGY MODULES

Artinianness of composed local cohomology modules
Authors: Saremi, H.;

ARTINIANNESS OF COMPOSED LOCAL COHOMOLOGY MODULES

Abstract

Summary: Let \(R\) be a commutative Noetherian ring, and let \(\underline{a}, \underline{b}\) be two ideals of \(R\) such that \(R/(\underline{a}+\underline{b})\) is Artinian. Let \(M\) and \(N\) be two finitely generated \(R\)-modules. We prove that \(H_{\underline{b}}^j(H_{\underline{a}}^t(M,N))\) is Artinian for \(j=0,1\), where \(t=\mathrm{inf}\{i\in\mathbb{N}_0: H_{\underline{a}}^i(M,N)\,\,\text{is not finitely generated}\,\,\}\). Also, we prove that if \(\mathrm{dim}\,\mathrm{Supp}\,(H_{fa}^i(M,N))\leq 2\), then \(H_{\underline{b}}^1(H_{\underline{a}}^i(M,N))\) is Artinian for all \(i\). Moreover, we show that if \(\mathrm{dim}\,N=d\), then \(H_{\underline{b}}^j(H_{\underline{a}}^{d-1}(N))\) is Artinian for all \(j\geq 1\).

Related Organizations
Keywords

Artinian modules, Local cohomology and commutative rings, generalized local cohomology, Commutative Artinian rings and modules, finite-dimensional algebras, local cohomology

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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