2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/54943Rigid gauge invariance comprises the symmetry content for physical quantities in a local gauge theory. Its derivation from BRS invariance is thus crucial for determining the physical consequences of the symmetry.6 pages, LaTeX2e, Talk given at the XXIst Conference on Group Theoretical Methods in Physics, Goslar, Juli 1996High Energy Physics - TheoryHigh Energy Physics - Phenomenologytext