On Riemannian manifolds satisfying a certain curvature condition imposed on the Weyl curvature tensor
On rotation and vibration motions of molecules
On some type of curvature conditions
In this paper we present a review of recent results on semi-Riemannian manifolds satisfying curvature conditions of pseudosymmetry type.
On the asymptotic geometry of gravitational instantons
We investigate the geometry at infinity of the so-called “gravitational instantons”, i.e. asymptotically flat hyperkähler four-manifolds, in relation with their volume growth. In particular, we prove that gravitational instantons with cubic volume growth are ALF, namely asymptotic to a circle fibration over a Euclidean three-space, with fibers of asymptotically constant length.
On the cohomology of twistor flag spaces
On the curvature of Chern-Lagrange connection.
On the Geroch group
On the Global Structure of Crystalline Surfaces.
On the invariance properties and the hamiltonian of the unified affine electromagnetism and gravitation theories
On the relation between the Einstein and the Komar expressions for the energy of the gravitational field
On the rheonomic Finslerian mechanical systems.
On the tangential velocity arising in a crystalline approximation of evolving plane curves
In a crystalline algorithm, a tangential velocity is used implicitly. In this short note, it is specified for the case of evolving plane curves, and is characterized by using the intrinsic heat equation.
Optimal inequalities for embedded space-times
Positive energy in general relativity
Prescribing Gauss curvature of surfaces in 3-dimensional spacetimes Application to the Minkowski problem in the Minkowski space
We study the existence of surfaces with constant or prescribed Gauss curvature in certain Lorentzian spacetimes. We prove in particular that every (non-elementary) 3-dimensional maximal globally hyperbolic spatially compact spacetime with constant non-negative curvature is foliated by compact spacelike surfaces with constant Gauss curvature. In the constant negative curvature case, such a foliation exists outside the convex core. The existence of these foliations, together with a theorem of C. Gerhardt,...
Problèmes mixtes pour le système de Maxwell
Quantification de certains espaces hermitiens symétriques
Quantification d'une variété symplectique
Quantization on submanifolds
Quasi-exactly solvable Schrödinger operators in three dimensions.