2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/36084It is shown that in the case of the spherically symmetric static backgrounds there is a gauge in which the Dirac equation is manifestly covariant under rotations. This allows us to separate the spherical variables like in the flat space-time, obtaining a pair of radial equations and a specific form of the radial scalar product.8 pages, LaTeX articleGeneral Relativity and Quantum Cosmologytext