2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/34997We prove that a globally hyperbolic spacetime with its causality relation is a bicontinuous poset whose interval topology is the manifold topology. This provides an abstract mathematical setting in which one can study causality independent of geometry and differentiable structure.9 pagesGeneral Relativity and Quantum Cosmologytext