2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/55691We show that a necessary condition, for the partition function of four-dimensional Yang-Mills theory to satisfy a S-duality property, is that certain functional determinants, generated by the dual change of variables, cancel each other. This result holds up to non-topological boundary terms in the dual action and modulo the problem of field-strength copies for the Bianchi identity constraint.4 pages, latex, no figures. Basic references on duality addedHigh Energy Physics - Theorytext