2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/117570The locality hypothesis is generally considered necessary for the study of the kinematics of non-inertial systems in special relativity. In this paper we discuss this hypothesis, showing the necessity of an improvement, in order to get a more clear understanding of the various concepts involved, like coordinate velocity and standard velocity of light. Concrete examples are shown, where these concepts are discussed.23 pagesGeneral Relativity and Quantum Cosmologytext