On the test properties of the Frobenius endomorphism
Commutative Algebra
2026-04-29 v1
Abstract
In this paper, we prove two theorems concerning the test properties of the Frobenius endomorphism over commutative Noetherian local rings of prime characteristic . Our first theorem generalizes a result of Funk-Marley on the vanishing of Ext and Tor modules, while our second theorem generalizes one of our previous results on maximal Cohen-Macaulay tensor products. In these earlier results, we replace with a more general module , where is a Cohen-Macaulay ring, is a Cohen-Macaulay -module with full support, and is the module viewed as an -module via the -th iteration of the Frobenius endomorphism. We also provide examples and present applications of our results, yielding new characterizations of the regularity of local rings.
Keywords
Cite
@article{arxiv.2502.15048,
title = {On the test properties of the Frobenius endomorphism},
author = {Olgur Celikbas and Arash Sadeghi and Yongwei Yao},
journal= {arXiv preprint arXiv:2502.15048},
year = {2026}
}