English

Contravariantly infinite resolving subcategories

Commutative Algebra 2026-03-10 v1 Representation Theory

Abstract

Let RR be a commutative Noetherian ring. Denote by modR\textrm{mod}R the category of finitely generated RR-modules. In this paper, a contravariantly infinite subcategory of modR\textrm{mod}R is defined as a full subcategory X\mathscr{X} of modR\textrm{mod}R such that no module outside X\mathscr{X} admits a right X\mathscr{X}-approximation. This paper provides several criteria for contravariant infiniteness in the case where RR is a local complete intersection.

Keywords

Cite

@article{arxiv.2603.07945,
  title  = {Contravariantly infinite resolving subcategories},
  author = {Gen Tanigawa},
  journal= {arXiv preprint arXiv:2603.07945},
  year   = {2026}
}
R2 v1 2026-07-01T11:09:38.399Z