Cofiniteness of local cohomology modules for ideals of dimension one
Commutative Algebra
2013-08-29 v1
Abstract
Let denote a commutative Noetherian (not necessarily local) ring, an arbitrary -module and an ideal of of dimension one. It is shown that the -module is finitely generated (resp. weakly Laskerian) for all if and only if the local cohomology module is -cofinite (resp. -weakly cofinite) for all . Also, we show that when is an arbitrary ideal and is finitely generated module such that the -module is weakly Laskerian for all , then is -cofinite for all and for any minimax submodule of , the -modules and are finitely generated, where is a non-negative integer. This generalizes the main result of Bahmanpour-Naghipour \cite{BN} and Brodmann and Lashgari \cite{BL}.
Keywords
Cite
@article{arxiv.1308.6040,
title = {Cofiniteness of local cohomology modules for ideals of dimension one},
author = {Kamal Bahmanpour and Reza Naghipour and Monireh Sedghi},
journal= {arXiv preprint arXiv:1308.6040},
year = {2013}
}
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7 pages