2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/180032In this paper we continue our analysis of a formulation of electrodynamics fully covariant under the full Poincaré group. Transformations under the four different components of the group force on us the introduction of particles, either in the identification by Feynman or in the identification of Dirac.15 pagesMathematical PhysicsDifferential Geometrytext