2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/42064Recent neutrino oscillation experiments are yielding valuable information on the nature of neutrino masses and mixings even though we are far from a complete understanding of the new physics implied by them. In these lectures, I summarize the current theoretical status of neutrino mass physics.60 pages, latex, no figures, UMD-PP-03-22High Energy Physics - Phenomenologytext