2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/66413We give a definition of a noncommutative torsor by a subset of the axioms previously given by Grunspan. We show that noncommutative torsors are an equivalent description of Hopf-Galois objects (without specifying the Hopf algebra). In particular, this shows that the endomorphism of a torsor featuring in Grunspan's definition is redundant.7 pagesQuantum Algebra16W30text