Spacelike Salkowski and anti-Salkowski curves with a spacelike principal normal in Minkowski 3-space.
Space-like surfaces in an anti-de Sitter space
Special cohomogeneity one isometric actions on irreducible symmetric spaces of types I and II.
Spectral Geometry of Compact Hermitian Symmetric Submanifolds.
Spectre du laplacien et longueurs des géodésiques périodiques. II
Spectre du laplacien et longueurs des géodésiques périodiques. I
Steiner's formula for the volume of a parallel hypersurface in a riemannian manifold
Submanifold averaging in Riemannian and symplectic geometry
We give a canonical construction of an “isotropic average” of given -close isotropic submanifolds of a symplectic manifold. For this purpose we use an improvement (obtained in collaboration with H. Karcher) of Weinstein’s submanifold averaging theorem and apply “Moser’s trick”. We also present an application to Hamiltonian group actions.
Submanifolds of a Lorentzian para-Sasakian manifold.
Submanifolds of Constant Mean Curvature.
Submanifolds of Euclidean space with parallel mean curvature vector.
Submanifolds of -structure manifold satisfying .
Submanifolds with harmonic mean curvature vector field in contact 3-manifolds
Biharmonic or polyharmonic curves and surfaces in 3-dimensional contact manifolds are investigated.
Submanifolds with Prescribed Mean Curvature Vector.
Sur la détermination, par des données de Cauchy, des champs de Killing admis par un espace-temps
Sur la géométrie des sous-fibrés et des feuilletages lagrangiens
Sur le théorème de Gauss-Bonnet pour les pseudo-métriques singulières
Surfaces à courbure extrinsèque négative dans l'espace hyperbolique
Surfaces with non-zero normal curvature tensor
Studiamo la topologia differenziale e la geometria delle superfici compatte con curvatura normale non-nulla in spazio della curvatura costante.
Surfaces with Parallel Normalized Mean Curvature Vector.