Acyclicity test of complexes modulo Serre subcategories using the residue fields
Commutative Algebra
2025-04-17 v2 Rings and Algebras
Abstract
Let be a commutative noetherian ring, and let (resp. ) be a Serre(resp. localizing) subcategory of the category of -modules. If is an unbounded complex of -modules Tor-perpendicular to and is an integer, then is in for each -module in if and only if is in for each prime ideal such that is in , where is the residue field at . As an application, we show that for any -module , is in for each prime ideal such that is in if and only if is in for each cyclic -module in . We also obtain some new characterizations of regular and Gorenstein rings in the case of consists of finite modules with supports in a specialization-closed subset of .
Cite
@article{arxiv.2503.06354,
title = {Acyclicity test of complexes modulo Serre subcategories using the residue fields},
author = {Mitsuyasu Hashimoto and Xi Tang},
journal= {arXiv preprint arXiv:2503.06354},
year = {2025}
}