The ordinary quivers of Hochschild extension algebras for self-injective Nakayama algebras

Abstract

Let $T$ be a Hochschild extension algebra of a finite dimensional algebra $A$ over a field $K$ by the standard duality $A$-bimodule ${\mathrm{Hom}}_K(A,K)$. In this paper, we determine the ordinary quiver of $T$ if $A$ is a self-injective Nakayama algebra by means of the $\mathbb{N}$-graded second Hochschild homology group $H{H}_2(A)$ in the sense of Sköldberg.

17 pages, 5 figures