2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/129161We define generalized vector fields, and contraction and Lie derivatives with respect to them. Generalized commutators are also defined.Talk delivered by 3 pages, S.Chatterjee at at 17th DAE-BRNS High Energy Physics Symposium (HEP06), Kharagpur IIT, India, 11-16 Dec 2006Mathematical Physicstext