The class of Gorenstein injective modules is covering if and only if it is closed under direct limits
Commutative Algebra
2024-09-18 v2
Abstract
We prove that the class of Gorenstein injective modules, , is special precovering if and only if it is covering if and only if it is closed under direct limits. This adds to the list of examples that support Enochs' conjecture:\\ "Every covering class of modules is closed under direct limits".\\ We also give a characterization of the rings for which is covering: the class of Gorenstein injective left -modules is covering if and only if is left noetherian, and such that character modules of Gorenstein injective left modules are Gorenstein flat.
Keywords
Cite
@article{arxiv.2403.02493,
title = {The class of Gorenstein injective modules is covering if and only if it is closed under direct limits},
author = {Alina Iacob},
journal= {arXiv preprint arXiv:2403.02493},
year = {2024}
}