2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/104885We state several sufficient conditions for compact spacelike surface in the3-dimensional de Sitter space to be totally geodesic or spherical.4 pagesDifferential Geometry53C42; 53B30, 53B45Compact spacelike surfaces in the 3-dimensional de Sitter spacetext