2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/134800If H is a finite dimensional quasi-Hopf algebra and A is a left H-module algebra, we prove that there is a Morita context connecting the smash product A#H and the subalgebra of invariants A^{H}. We define also Galois extensions and prove the connection with this Morita context, as in the Hopf case.20 pages, minor changes, accepted to Communications in AlgebraQuantum Algebra16W30text