2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/43327The major steps in the development of our knowledge about neutrinos are reviewed. The basics of neutrino oscillation formalism is presented. Neutrino oscillations in the framework of three-neutrino mixing are considered. The evidence for neutrino oscillations is discussed.High Energy Physics - Phenomenologytext