In the first part of the course the classical theory of compound interest is developed. In the second part the "term structure of interest rate" and the concept of "duration" are defined in the framework of the financial markets. Finally in the third part the fundamental results of the classical semi-deterministic immunization theory are supplied.Massimo de Felice, Franco Moriconi, "La teoria dell'immunizzazione finanziaria", il Mulino, 1991Elisa Luciano, Lorenzo Peccati, "Matematica per la gestione finanziaria", Editori Riuniti, 1997.