2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/117566It is shown that cosmological spacetime manifold has the structure of a Lie group and a spinor space. This leads naturally to the Minkowski metric on tangent spaces and the Lorentzian metric on the manifold and makes it possible to dispense with double-valued representations.12 pages, LaTeX 2eGeneral Relativity and Quantum CosmologyOn Cosmological Spacetime Structure and Symmetry: Manifold as a Lie Group, Spinor Structure and Symmetry Group, Minkowski Metric, and Unnecessariness of Double-Valued Representationstext