2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/200438We prove the existence of 3/4-BPS preons in four- and five-dimensional gauged supergravities by explicitly constructing them as smooth quotients of the AdS_4 and AdS_5 maximally supersymmetric backgrounds, respectively. This result illustrates how the spacetime topology resurrects a fraction of supersymmetry previously ruled out by the local analysis of the Killing spinor equations.10 pages (a minor imprecision has been corrected)High Energy Physics - Theorytext