2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/93624The relation between the special relativity and quantum mechanics is discussed. Based on the postulate that space-time inversion is equavalent to particle-antiparticle transformation, the essence of special relativity is explored and the relativistic modification on Stationary Schrödinger Equation is derived.13 pages, LaTex, no figureQuantum Physicstext