English

One-tilting classes and modules over commutative rings

Commutative Algebra 2016-06-06 v2 Category Theory Rings and Algebras Representation Theory

Abstract

We classify 1-tilting classes over an arbitrary commutative ring. As a consequence, we classify all resolving subcategories of finitely presented modules of projective dimension at most 1. Both these collections are in 1-1 correspondence with faithful Gabriel topologies of finite type, or equivalently, with Thomason subsets of the spectrum avoiding a set of primes associated in a specific way to the ring. We also provide a generalization of the classical Fuchs and Salce tilting modules, and classify the equivalence classes of all 1-tilting modules. Finally we characterize the cases when tilting modules arise from perfect localizations.

Keywords

Cite

@article{arxiv.1507.02811,
  title  = {One-tilting classes and modules over commutative rings},
  author = {Michal Hrbek},
  journal= {arXiv preprint arXiv:1507.02811},
  year   = {2016}
}

Comments

19 pages, 1 figure

R2 v1 2026-06-22T10:09:23.834Z