2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/140476In particular instances and in particular regions the Einsteinian gravity exerts a repulsive action -- and without any cosmological term. This fact could have an interest for the explanation of the dark energy, and for the gravitational collapses.8 pages, 6 figures, LaTeXGeneral Physicstext