Canonical forms for separability structures with less than five Killing tensors
Cauchy's problem for Bach's equations of general relativity.
Characterization of -lightlike warped product of indefinite Kenmotsu manifolds
Characterizations of spacelike general helices in Lorentzian manifolds
Chern-Simons forms of pseudo-Riemannian homogeneity on the oscillator group.
Classification of compact complex homogeneous spaces with invariant volumes.
Compact space-like hypersurfaces in de Sitter space.
Compact space-like submanifolds with parallel mean curvature vector of a pseudo-Riemannian space
Complete classification of parallel Lorentz surfaces in neutral pseudo hyperbolic 4-space
A Lorentz surface of an indefinite space form is called a parallel surface if its second fundamental form is parallel with respect to the Van der Waerden-Bortolotti connection. Such surfaces are locally invariant under the reflection with respect to the normal space at each point. Parallel surfaces are important in geometry as well as in general relativity since extrinsic invariants of such surfaces do not change from point to point. Recently, parallel Lorentz surfaces in 4D neutral pseudo Euclidean...
Complete classification of spatial surfaces with parallel mean curvature vector in arbitrary non-flat pseudo-Riemannian space forms
Submanifolds with parallel mean curvature vector play important roles in differential geometry, theory of harmonic maps as well as in physics. Spatial surfaces in 4D Lorentzian space forms with parallel mean curvature vector were classified by B. Y. Chen and J. Van der Veken in [9]. Recently, spatial surfaces with parallel mean curvature vector in arbitrary pseudo-Euclidean spaces are also classified in [7]. In this article, we classify spatial surfaces with parallel mean curvature vector in pseudo-Riemannian...
Complete Maximal spacelike hypersurfaces of H ...
Complete space-like submanifolds in a de Sitter space with parallel mean curvature vector.
Complete space-like submanifolds in de Sitter space.
Complete space-like submanifolds with constant scalar curvature in a de Sitter space.
Complétude des deux-tores lorentziens
Complétude des variétés Lorentziennes à courbure constante.
Complétude et flots nul-géodésibles en géométrie lorentzienne
On étudie la complétude géodésique des flots nul-prégéodésiques sur les variétés lorentziennes compactes, ce qui donne une obstruction à être nul-géodésique. On montre que lorsque l’orthogonal du champ de vecteurs engendrant le flot considéré s’intègre en un feuilletage , la complétude du flot se lit sur l’holonomie de . On montre ainsi qu’il n’existe pas de flots nul-géodésiques lisses sur . On montre aussi qu’un -tore lorentzien est nul-complet si et seulement si ses feuilletages de type lumière...
Complex Analytic Curves and Maximal Surfaces.
Complex timelike isothermic surfaces and their geometric transformations.
Conformal geometry and spatially homogeneous cosmology