2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/66997We determine the derivation algebras and the isomorphism classes of a family of the simple Lie algebras introduced recently by Xu [Manuscripta Math 100 (1999), 489-518]. The structure space of these algebras is given explicitly.14 pages, latexQuantum Algebratext