2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/56751The construction of appropriate jet space coordinates for calculating local BRST cohomology groups is discussed. The relation to tensor calculus is briefly reviewed too.11 pages, correction in eq. (29), to appear in Lett.Math.PhysMathematical PhysicsHigh Energy Physics - Theory81T70; 58A20; 53B50; 81T13text