Singularities of wavefronts and lightcones in the context of GR via null foliations

2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/33583We describe an approach to the issue of the singularities of null hypersurfaces, due to the focusing of null geodesics, in the context of the recently introduced formulation of GR via null foliations.8 pages, 6 figuresGeneral Relativity and Quantum CosmologySingularities of wavefronts and lightcones in the context of GR via null foliationstext