2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/138212Several versions of the Gravitational Time Dilation effect of General Relativity are formulated by the use of Einstein's Equivalence Principle. It is shown that all of them are logical consequence of a first-order axiom system of Special Relativity extended to accelerated observers.43 pages, 13 figuresGeneral Relativity and Quantum CosmologyMathematical PhysicsLogictext