2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/140708These are expanded notes for a short course given at the Universidad Nacional de La Plata. They aim at giving a self-contained account of the results of Alain Connes and Michel Dubois--Violette.17 pagesQuantum AlgebraGeneral Relativity and Quantum Cosmologytext