The Hochschild Cohomology ring of preprojective algebras of type Ln
arXiv:1010.2790
Abstract
We compute the Hochschild Cohomology of a finite-dimensional preprojective algebra of generalized Dynkin type Ln over a field of characteristic different from 2 . In particular, we describe the ring structure of the Hochschild Cohomology ring under the Yoneda product by giving an explicit presentation by generators and relations.
37 pages