2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/221363We present a variational formulation of electrodynamics using de Rham even and odd differential forms. Our formulation relies on a variational principle more complete than the Hamilton principle and thus leads to field equations with external sources and permits the derivation of the constitutive relations. We interpret a domain in space-time as an odd de Rham 4-current. This permits a treatment of different types of boundary problems in an unified way. In particular we obtain a smooth transition to the infinitesimal version by using a current with a one point support.23 pages, to appear in Int. J. Geom. Methods Mod. Phys. (IJGMMP)Mathematical PhysicsDifferential Geometry49S05, 70S05text