2026-06-28T14:49:39Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/501102023-08-25T10:46:50Zcom_20.500.14352_14col_20.500.14352_15

Transverse Riemann-Lorentz type-changing metrics with tangent radical Lafuente López, Javier Aguirre Dabán, Eduardo Consider a smooth manifold with a smooth metric which changes bilinear type on a hypersurface Σ and whose radical line field is everywhere tangent to Σ. We describe two natural tensors on Σ and use them to describe “integrability conditions” which are similar to the Gauss–Codazzi conditions. We show that these forms control the smooth extendibility to Σ of ambient curvatures. 2023-06-20T09:38:58Z 2023-06-20T09:38:58Z 2006-03 journal article 0926-2245 10.1016/j.difgeo.2005.08.001 https://hdl.handle.net/20.500.14352/50110 http://www.sciencedirect.com/science/article/pii/S0926224505000768 http://www.sciencedirect.com/ eng restricted access Elsevier Science