2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/55475We formulate classical actions for N=1 supergravity in D=(1,3) as a gauge theory of OSp(1|4). One may choose the action such that it does not include a cosmological term.latex, talk given at the International Seminar on Supersymmetries and Quantum Symmetries, Dubna, Russia, July 22 - 26, 1997 and at the 31st International Symposium Ahrenshoop on the Theory of Elementary Particles, Buckow, September 2-6, 1997High Energy Physics - Theorytext