Morita invariance for infinitesimal deformations
Rings and Algebras
2021-04-26 v2
Abstract
Let and be two Morita equivalent finite dimensional associative algebras over a field . It is well known that Hochschild cohomology is invariant under Morita equivalence. Since infinitesimal deformations are connected with the second Hochschild cohomology group, we explicitly describe the transfer map connecting with . This allows us to transfer Morita equivalence between and to that between infinitesimal deformations of them. As an application, when is algebraically closed, we consider the quotient path algebra associated to and describe the presentation by quiver and relations of the infinitesimal deformations of .
Cite
@article{arxiv.2003.10366,
title = {Morita invariance for infinitesimal deformations},
author = {María Julia Redondo and Lucrecia Román and Fiorela Rossi Bertone and Melina Verdecchia},
journal= {arXiv preprint arXiv:2003.10366},
year = {2021}
}