English

$L_\infty$-structure on Barzdell's complex for monomial algebras

Rings and Algebras 2020-08-20 v1

Abstract

Let AA be a monomial associative finite dimensional algebra over a field k\Bbbk of characteristic zero. It is well known that the Hochschild cohomology of AA can be computed using Bardzell's complex B(A)B(A). The aim of this article is to describe an explict LL_\infty-structure on B(A)B(A) that induces a weak equivalence of LL_\infty-algebras between B(A)B(A) and the Hochschild complex C(A)C(A) of AA. This allows us to describe the Maurer-Cartan equation in terms of elements of degree 22 in B(A)B(A). Finally, we make concrete computations when AA is a truncated algebra, and we prove that Bardzell's complex for radical square zero algebras is in fact a dg-Lie algebra.

Keywords

Cite

@article{arxiv.2008.08122,
  title  = {$L_\infty$-structure on Barzdell's complex for monomial algebras},
  author = {María Julia Redondo and Fiorela Rossi Bertone},
  journal= {arXiv preprint arXiv:2008.08122},
  year   = {2020}
}
R2 v1 2026-06-23T17:56:52.179Z