Local Homology, Koszul Homology and Serre Classes
Commutative Algebra
2018-04-27 v2
Abstract
Given a Serre class of modules, we compare the containment of the Koszul homology, Ext modules, Tor modules, local homology, and local cohomology in up to a given bound . As some applications, we give a full characterization of noetherian local homology modules. Further, we establish a comprehensive vanishing result which readily leads to the formerly known descriptions of the numerical invariants width and depth in terms of Koszul homology, local homology, and local cohomology. Also, we immediately recover a few renowned vanishing criteria scattered about the literature.
Keywords
Cite
@article{arxiv.1701.07727,
title = {Local Homology, Koszul Homology and Serre Classes},
author = {Kamran Divaani-Aazar and Hossein Faridian and Massoud Tousi},
journal= {arXiv preprint arXiv:1701.07727},
year = {2018}
}
Comments
It will appear in Rocky Mountain Journal of Mathematics