2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/120386We prove that stable ergodicity is C r open and dense among conservative partially hyperbolic diffeomorphisms with one-dimensional center bundle, for all r in [2,infty]. The proof follows Pugh-Shub program: among conservative partially hyperbolic diffeomorphisms with one-dimensional center bundle, accessibility is C r open and dense, and essential accessibility implies ergodicity.22 pages, 9 figuresDynamical SystemsPrimary 37D30; Secondary 37A25Accessibility and stable ergodicity for partially hyperbolic diffeomorphisms with 1d-center bundletext