A construction of the general relativistic Boltzmann equation.
A convergent post-newtonian approximation for the constraint equations in general relativity
A discrete-time interpretation of the Planck-Einstein equation.
A generalization of Dixon's description of extended bodies
A generalized plane wave metric
A gravitational effective action on a finite triangulation as a discrete model of continuous concepts
We recall how the Gauss-Bonnet theorem can be interpreted as a finite dimensional index theorem. We describe the construction given in hep-th/0512293 of a function that can be interpreted as a gravitational effective action on a triangulation. The variation of this function under local rescalings of the edge lengths sharing a vertex is the Euler density, and we use it to illustrate how continuous concepts can have natural discrete analogs.
A Hadamard type theorem for the space-time.
A hypercontinuous hypersmooth Schwarzschild line element transformation.
A model of gauge theory with invariant variables.
A Morse theory for light rays on stably causal lorentzian manifolds
A new characterization of -stable hypersurfaces in space forms
In this paper we study the -stability of closed hypersurfaces with constant -th mean curvature in Riemannian manifolds of constant sectional curvature. In this setting, we obtain a characterization of the -stable ones through of the analysis of the first eigenvalue of an operator naturally attached to the -th mean curvature.
A note on noncommutative and false noncommutative spaces.
A note on proper conformal vector fields in Bianchi type I space-times.
A principle involving the variation of the metric tensor in a stationary space-time of general relativity
A propos de la conjecture de la balle liquide en relativité générale
A review of procedures for summing Kapteyn series in mathematical physics.
A scalar geodesic deviation equation and a phase theorem.
A singular lagrangian model for N-body relativistic interactions
A space-time theorem in the de Sitter-world. (Ein Raum-Zeit-Satz für die de Sitter-Welt.)
A speculative approach to quantum gravity.