Hideyuki Koie

collaborators

2 papers

math.RA2019

An application of a theorem of Sheila Brenner for Hochschild extension algebras of a truncated quiver algebra

Hideyuki Koie

Let $A$ be a truncated quiver algebra over an algebraically closed field such that any oriented cycle in the ordinary quiver of $A$ is zero in $A$ . We give the number of the indeco…

math.RA2017

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

Hideyuki Koie, Tomohiro Itagaki, Katsunori Sanada

Let $T$ be a Hochschild extension algebra of a finite dimensional algebra $A$ over a field $K$ by the standard duality $A$ -bimodule $Hom_{K} (A, K)$ . In this paper, we determin…