Some submersions of CR-hypersurfaces of Kähler-Einstein manifold.
Some theorems on austere submanifolds.
Some theorems on compact conformally symmetric Riemannian spaces
Some topics in spectral geometry
Some topological aspects of C* actions on compact Kaehler manifolds.
Some Topological Properties of Kähler Manifolds and Homogeneous Spaces.
Some type of semisymmetry on two classes of almost Kenmotsu manifolds
The object of the present paper is to study some types of semisymmetry conditions on two classes of almost Kenmotsu manifolds. It is shown that a -almost Kenmotsu manifold satisfying the curvature condition is locally isometric to the hyperbolic space . Also in -almost Kenmotsu manifolds the following conditions: (1) local symmetry , (2) semisymmetry , (3) , (4) , (5) locally isometric to the hyperbolic space are equivalent. Further, it is proved that a -almost Kenmotsu manifold satisfying...
Some uniqueness and nonexistence theorems for embedded minimal surfaces.
Some vector subbundles of a cotangent bundle of order 2
Sous-groupes discrets des groupes de Lie : rigidité, arithméticité
Sous-variétés complexes d'Einstein de l'espace projectif
Sous-variétés lagrangiennes et lagrangiennes exactes des fibrés cotangents.
Space time manifolds and contact structures.
Spacelike hypersurfaces in de Sitter space with constant higher-order mean curvature.
Spacelike hypersurfaces with constant scalar curvature.
Spacelike maximal surfaces with constant scalar normal curvature in a normal contact Lorentzian manifold.
Spacelike Salkowski and anti-Salkowski curves with a spacelike principal normal in Minkowski 3-space.
Spacelike submanifolds in indefinite space form
In this paper, we get an intrinsic inequality for spacelike submanifolds in indefinite space form , . We also get some rigidity theorems for such spacelike submanifolds.
Space-like surfaces in an anti-de Sitter space
Spaces with a covariant constant linear geometric object