2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/51644We consider no-scale extended supergravity models as they arise from string and M-theory compactifications in presence of fluxes. The special role of gauging axion symmetries for the Higgs and superHiggs mechanism is outlined.AMS-LaTeX, 16 pages. Some misprints corrected, references addedHigh Energy Physics - Theorytext