English

Melkersson condition on Serre subcategories

Commutative Algebra 2014-04-29 v1

Abstract

Let RR be a commutative noetherian ring, let a\frak a and b\frak b be two ideals of RR; and let \Ss\Ss be a Serre subcategory of RR-modules. We give a necessary and sufficient condition by which \Ss\Ss satisfies CaC_{\frak a} and CbC_{\frak b} conditions. As an conclusion we show that over a artinian local ring, every Serre subcategory satisfies CaC_{\frak a} condition. We also show that \Ssa\Ss_{\frak a} is closed under extension of modules. If \Ss\Ss is a torsion subcategory, we prove that SS satisfies CaC_{\frak a} condition. We prove that CaC_{\frak a} condition can be transferred via rings homomorphism. As some applications, we give several results concerning with Serre subcategories in local cohomology theory.

Keywords

Cite

@article{arxiv.1404.6711,
  title  = {Melkersson condition on Serre subcategories},
  author = {Reza Sazeedeh and Rasul Rasuli},
  journal= {arXiv preprint arXiv:1404.6711},
  year   = {2014}
}
R2 v1 2026-06-22T03:59:30.254Z