2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/40045The Bethe-Salpeter equation for bound states of a fermion-antifermion pair in the instantaneous approximation for the involved interaction kernel is converted into an equivalent matrix eigenvalue problem with explicitly (algebraically) given matrices.4 pages, LaTeX, contributed to the International Conference on "Quark Confinement and the Hadron Spectrum IV," July 3 - 8, 2000, Vienna, AustriaHigh Energy Physics - PhenomenologyNuclear Theorytext