2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/179768The entropy of BPS black holes in four space-time dimensions is discussed from both macroscopic and microscopic points of view.23 pages, lecture notes, Strings and Branes: the present paradigm for gauge interactions and cosmology, Cargese 2006High Energy Physics - Theorytext