2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/34980We exploit four-dimensional tensor identities to give a very simple proof of the existence of a Lanczos potential for a Weyl tensor in four dimensions with any signature, and to show that the potential satisfies a simple linear second order differential equation, e.g., a wave equation in Lorentz signature. Furthermore, we exploit higher dimensional tensor identities to obtain the analogous results for (m,m)-forms in 2m dimensions.8 pages; Tex fileGeneral Relativity and Quantum CosmologyDifferential Geometrytext