The Hochschild Cohomology ring of preprojective algebras of type Ln

Details The Hochschild Cohomology ring of preprojective algebras of type Ln The Hochschild Cohomology ring of preprojective algebras of type Ln

2010-10-13

arxiv.org/abs/1010.2790v2

Mathematics

Representation Theory

37 pages

Scientific paper

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.

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