2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/74276In this article, we give a simple and direct proof of the Yoshida-Nicolaescu Theorem in a more general context by using the theory of partial signatures. We do not impose the usual condition of non-degeneracy at the endpoints and use a natural definition of the Maslov index.Differential Geometry58J32; 58B15text