by Erdmann, K., Holm, T..
Series: 1997-13, Preprints
We study stable homomorphisms for twisted bimodule structures
on a finite-dimensional self-injective algebra. We use this to give
a presentation for the Hochschild cohomology ring of self-injective
Nakayama algebras. By derived equivalence, this gives also the Hochschild
cohomology ring for arbitrary self-injective algebras whose stable Auslander-
Reiten quiver is of the form (Z)A n = ! 8 e ?. Moreover, we obtain a
new characterization of self-injective Nakayama algebras.
This paper was published in:
Forum Mathematicum 11 (1999), 177-201