2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/74367We 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, 2004Quantum Algebra17B69text