2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/99124Representations of the symmetry group D_n of the n-sided regular polygon have generic multiplication rules if n is prime. Using D_n with n=5 or greater, a particular well-known form of the Majorana neutrino mass matrix is derived.7 pages, 1 figure, dedicated to Dubravko TadicHigh Energy Physics - Phenomenologytext