Universal deformation rings and self-injective Nakayama algebras
Group Theory
2019-03-20 v2 Representation Theory
Abstract
Let be a field and let be an indecomposable finite dimensional -algebra such that there is a stable equivalence of Morita type between and a self-injective split basic Nakayama algebra over . We show that every indecomposable finitely generated -module has a universal deformation ring and we describe explicitly as a quotient ring of a power series ring over in finitely many variables. This result applies in particular to Brauer tree algebras, and hence to -modular blocks of finite groups with cyclic defect groups.
Keywords
Cite
@article{arxiv.1702.02841,
title = {Universal deformation rings and self-injective Nakayama algebras},
author = {Frauke M. Bleher and Daniel J. Wackwitz},
journal= {arXiv preprint arXiv:1702.02841},
year = {2019}
}
Comments
24 pages