English

A higher algebraic approach to liftings of modules over derived quotients

Commutative Algebra 2025-04-01 v2 Number Theory Rings and Algebras

Abstract

We show a certain existence of a lifting of modules under the self-Ext2\mathrm{Ext}^2-vanishing condition over the "derived quotient" by using the notion of higher algebra. This refines a work of Auslander-Ding-Solberg's solution of the Auslander-Reiten conjecture for complete interesctions. Together with Auslander's zero-divisor theorem, we show that the existence of such Ext\mathrm{Ext}-vanishing module over derived quotients is equivalent to being local complete intersections.

Keywords

Cite

@article{arxiv.2503.17964,
  title  = {A higher algebraic approach to liftings of modules over derived quotients},
  author = {Ryo Ishizuka},
  journal= {arXiv preprint arXiv:2503.17964},
  year   = {2025}
}

Comments

27 pages; fix typo and add some remarks