Aguirre Dabán, EduardoFernandez, V.Lafuente, J.2023-06-202023-06-202007-060393-044010.1016/j.geomphys.2007.01.003https://hdl.handle.net/20.500.14352/49806Physical reasons suggested in [J.B. Hartle, S.W. Hawking, Wave function of the universe, Phys. Rev. D41 (1990) 1815-1834] for the Quantum Gravity Problem lead us to study type-changing metrics on a manifold. The most interesting cases are Transverse Rieniann-Lorentz Manifolds. Here we study the conformal geometry of such manifolds.engjournal articlehttp://www.sciencedirect.com/science/article/pii/S0393044007000046http://www.sciencedirect.comrestricted access519.6530.1SingularitiesExtendabilityMetricsFísica matemáticaAnálisis numérico1206 Análisis Numérico