5 citations · 5 across the 2 of their papers we have counts for
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Principal configurations around umbilics of spacelike surfaces in null hypersurfaces of
Matias Navarro, Oscar Palmas, Didier A. Solis
We study the principal configurations around an isolated -umbilical point on a generic spacelike surface immersed in a null hypersurface of Minkowski space $\mathbb{R}_1…
Null screen quasi-conformal hypersurfaces in semi-Riemannian manifolds and applications
Matias Navarro, Oscar Palmas, Didier Solis
We introduce a class of null hypersurfaces of a semi-Riemannian manifold, namely, screen quasi-conformal hypersurfaces, whose geometry may be studied through the geometry of its sc…
Null screen isoparametric hypersurfaces in Lorentzian space forms
Matias Navarro, Oscar Palmas, Didier Solis
In this paper we develop the notion of screen isoparametric hypersurface for null hypersurfaces of Robertson-Walker spacetimes. Using this formalism we derive Cartan identities for…
Classification of constant angle hypersurfaces in warped products via eikonal functions
Eugenio Garnica, Oscar Palmas, Gabriel Ruiz-Hernandez
Given a warped product of the real line with a Riemannian manifold of arbitrary dimension, we classify the hypersurfaces whose tangent spaces make a constant angle with the vector…