Cofiniteness of weakly Laskerian local cohomology modules
Commutative Algebra
2015-03-13 v2
Abstract
Let be an ideal of a Noetherian ring R and M be a finitely generated R-module. We introduce the class of extension modules of finitely generated modules by the class of all modules with and we show it by where is an integer. We prove that for any (or minimax) submodule N of the R-modules are finitely generated, whenever the modules , , ..., are (or weakly Laskerian). As a consequence, it follows that the associated primes of are finite. This generalizes the main results of Bahmanpour and Naghipour, Brodmann and Lashgari, Khashyarmanesh and Salarian, and Hong Quy. We also show that the category of -cofinite ~ -modules forms an Abelian subcategory of the category of all -modules.
Keywords
Cite
@article{arxiv.1211.5748,
title = {Cofiniteness of weakly Laskerian local cohomology modules},
author = {Moharram Aghapournahr and Kamal Bahmanpour},
journal= {arXiv preprint arXiv:1211.5748},
year = {2015}
}
Comments
8 pages, some changes has been done