2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/180401Recent progress in the application of finite groups to neutrino mass matrices is reviewed, with special emphasis on the tetrahedral symmetry A_4.13 pages, no figure; talk at VI-Silafae, Puerto Vallarta, Nov 06High Energy Physics - PhenomenologyApplication of Finite Groups to Neutrino Mass Matricestext