2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/33934The causality principle for the Relativistic Theory of Gravitation (RTG) is presented. It is a straightforward consequence of the RTG basic postulates. The necessary conditions for physical solutions of the gravitational field equations to be fulfilled are given.12 pages, latex fileGeneral Relativity and Quantum Cosmologytext