2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/139162\noindent 1. Generalities\hfil\break 2. Lie groups and Lie algebras\hfil\break 3. The unitary groups\hfil\break 4. Representations of the SU(n) groups (and of their algebras)\hfil\break 5. The tensor method for unitary groups, and\hb the permutation group\hfil\break 6. Relativistic invariance. The Lorentz group\hfil\break 7. General representation of relativistic stateslecture notesHigh Energy Physics - Phenomenologytext