2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/35495Within the general class of Asymptotically Anti-de Sitter spacetimes that are asymptotic to the A-de-S Schwarzschild metric, we give a simple positive mass theorem based on arguments from causal structure. A general result for all asymptotically A-de-S spacetimes will be given elsewhere.talk given at Fifth Canadian Conference on General Relativity and Relativistic Astrophysics, Waterloo, 1993. (Plain TeX)General Relativity and Quantum Cosmologytext