On Lie algebras associated with representation directed algebras
arXiv:0902.3348
Abstract
Let be a representation-finite -algebra. The -Lie algebra associated with has been defined by Ch. Riedtmann. If is representation-directed there is another -Lie algebra associated with defined by C. M. Ringel and denoted by $\CK(B)$. We prove that the Lie algebras and $\CK(B)$ are isomorphic for any representation-directed -algebra .
17 pages