2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/47772We propose the relations 1/e - e =3 and tan(2theta_W)=3/2, where e is the positron charge and theta_W is the weak angle. Present experimental data support these relations to a very high accuracy. We suggest that some duality relates the weak isospin and hypercharge gauge groups of the standard electroweak theory.Latex, 6 pagesHigh Energy Physics - PhenomenologyHigh Energy Physics - Theorytext