2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/105047This is a Thesis submitted for the degree of Doctor Philosophiae at S.I.S.S.A./I.S.A.S.100 pages, 14 figures, Ph.D. ThesisAnalysis of PDEsAnalysis of singular solutions for two nonlinear wave equationstext