Trace ideals, conductors, and ideals of finite (phantom) projective dimension
Commutative Algebra
2025-01-29 v2
Abstract
In this paper, we consider whether parameter test ideals, conductors, -ideals, and trace ideals are contained in an ideal whose quotient ring has finite phantom projective dimension (for example, ideals generated by a system of parameters or ideals with finite projective dimension). One of the main results asserts that such inclusions do not exist in quasi-Gorenstein complete local domains. We also provide examples of Cohen-Macaulay local rings with good properties where such inclusions occur, thus answering negatively a question of Huneke-Swanson.
Keywords
Cite
@article{arxiv.2501.03442,
title = {Trace ideals, conductors, and ideals of finite (phantom) projective dimension},
author = {Kaito Kimura},
journal= {arXiv preprint arXiv:2501.03442},
year = {2025}
}
Comments
14 pages