English

A note on the non-Artinianness of top local cohomology modules

Commutative Algebra 2016-06-03 v1

Abstract

Let RR be a Noetherian ring, II an ideal of RR and MM an RR-module. In this article, we examine the question of whether an arbitrary top local cohomology module, HIcd(I,M)(M)\operatorname{H}^{\operatorname{cd}(I,M)}_I(M), is Artinian, or not. Several results related to this question are obtained; in particular, we prove that over a Noetherian local unique factorization domain RR of dimension three, for a finitely generated faithful module MM, a top local cohomology module is Artinian if and only if cd(I,M)=3\operatorname{cd}(I,M)= 3.

Keywords

Cite

@article{arxiv.1606.00814,
  title  = {A note on the non-Artinianness of top local cohomology modules},
  author = {Tuğba Yıldırım},
  journal= {arXiv preprint arXiv:1606.00814},
  year   = {2016}
}