2026-05-28T20:41:37Zhttps://riuma.uma.es/rest/oai/request

oai:riuma.uma.es:10630/263082026-02-03T11:04:30Zcom_10630_2254col_10630_37953

00925njm 22002777a 4500 dc Gutiérrez-López, Manuel author Olea-Andrades, Benjamín author 2023 We show a property on the null cones in a Lorentzian manifold near a conjugate point, which contributes to the understanding of the behaviour of the exponential map. We also give an analogous property in the Riemannian case. Gutiérrez, M., Olea, B. On the regularity of null cones and geodesic spheres. Anal.Math.Phys. 13, 30 (2023). https://doi.org/10.1007/s13324-023-00791-0 https://hdl.handle.net/10630/26308 https://doi.org/10.1007/s13324-023-00791-0 Hipersuperficies Geometría semi-riemanniana On the regularity of null cones and geodesic spheres