2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/34582A deformation of special relativity based on a dispersion relation with an energy independent speed of light and a symmetry between positive and negative energy states is proposed. The deformed Lorentz transformations, generators and algebra are derived and some consequences are discussed.6 pages, 0 figuresGeneral Relativity and Quantum Cosmologytext