English

Auslander's Theorem and n-Isolated Singularities

Commutative Algebra 2022-01-25 v2 Representation Theory

Abstract

One of the most stunning results in the representation theory of Cohen-Macaulay rings is Auslander's well known theorem which states a CM local ring of finite CM type can have at most an isolated singularity. There have been some generalizations of this in the direction of countable CM type by Huneke and Leuschke. In this paper, we focus on a different generalization by restricting the class of modules. Here we consider modules which are high syzygies of MCM modules over non-commutative rings, exploiting the fact that non-commutative rings allow for finer homological behavior. We then generalize Auslander's Theorem in the setting of complete Gorenstein local domains by examining path algebras, which preserve finiteness of global dimension.

Keywords

Cite

@article{arxiv.2101.08294,
  title  = {Auslander's Theorem and n-Isolated Singularities},
  author = {Josh Stangle},
  journal= {arXiv preprint arXiv:2101.08294},
  year   = {2022}
}

Comments

17 pages, no figures

R2 v1 2026-06-23T22:21:56.501Z