Pseudoderivations, pseudoautomorphisms and simple current modules for vertex algebras
arXiv:math/0503041
Abstract
We exhibit a connection between Etingof-Kazhdan's notion of pseudoderivation and a certain construction of simple current modules for a vertex operator algebra and meanwhile we introduce and study a notion of pseudoendomorphism (pseudoautomorphism).
11 pages; to appear in the Proceedings of the Virginia conference ``Infinite Dimensional Aspects of Representation Theory and Applications,'' May 18-22, 2004