2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/33883Results on the observables of the Euclidean supergravity in terms of the Dirac eigenvalues are briefly revisited.4 pages, LATeX, submitted as constribution to "Concise Encyclopaedia of Supersymmetry"General Relativity and Quantum Cosmologytext