2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/179751Orthogonality criterion is used to shown in a very simple and general way that anomalous bound-state solutions for the Coulomb potential (hydrino states) do not exist as bona fide solutions of the Schrödinger, Klein-Gordon and Dirac equations.6 pagesHigh Energy Physics - TheoryQuantum Physicstext