2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/62263Let $G$ be a Lie group, $\g$ its Lie algebra, and $U_h(\g)$ the corresponding quantum group. We consider some examples of $U_h(\g)$-invariant one and two parameter quantizations on $G$-manifolds.Latex2e, 13 pp. A talk at the workshop "New homological and categorical methods in mathematical physics", Manchester, July 5-12, 2001Quantum Algebratext