2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/34850General relativity in the form where gravitational perturbations together with other physical fields propagate on an auxiliary background is considered. With using the Katz-Bi{č}ák-Lynden-Bell technique new conserved currents, divergences of antisymmetric tensor densities(superpotentials), in an arbitrary curved spacetime are constructed.LATEX, 8 pagesGeneral Relativity and Quantum Cosmologytext