2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/226732In this talk a previous theorem on geodesic completeness of diagonal cylindrical spacetimes will be generalized to cope with the nondiagonal case. A sufficient condition for such spacetimes to be causally geodesically complete will be given5 pp. Proceedings of ERE'99General Relativity and Quantum Cosmologytext