2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/55297In these lectures we review how some of the recent developments in string theory are closely related to generic properties of supersymmetry. Lectures given at the Nato Advanced Study Institute on "Strings, Branes and Dualities", Cargese, May 26 - June 14, 1997.76 pages, Latex, 5 figures, uses crckapb.sty, minor changesHigh Energy Physics - Theorytext