On the existence of escaping geodesics.
On the existence of geodesics in static Lorentz manifolds with singular boundary
On the existence of multiple geodesics in static space-times
On the geodesic connectedeness of Lorentzian manifolds.
On the geodesics flow of tori without conjugate points.
On the Geodesics of the Bergman Metric.
On the geometry at infinity of the universal covering of
On the geometry of complex Grassmann manifold, its noncompact dual and coherent states.
On the geometry of tangent bundles with a class of metrics
We introduce a class of metrics on the tangent bundle of a Riemannian manifold and find the Levi-Civita connections of these metrics. Then by using the Levi-Civita connection, we study the conformal vector fields on the tangent bundle of the Riemannian manifold. Finally, we obtain some relations between the flatness (resp. local symmetry) properties of the tangent bundle and the flatness (resp. local symmetry) on the base manifold.
On the geometry of tangent bundles with the metric II+III
The main purpose of this paper is to investigate some relations between the flatness or locally symmetric property on the tangent bundle TM equipped with the metric II+III and the same property on the base manifold M and study geodesics by means of the adapted frame on TM.
On the Lengths of Closed Geodesics on Almost Round Spheres.
On the Lengths of Closed Geodesics on Convex Surfaces.
On the mod p Betti numbers of loop spaces.
On the Number of Closed Geodesics on Projective Spaces.
On the projective Finsler metrizability and the integrability of Rapcsák equation
A. Rapcsák obtained necessary and sufficient conditions for the projective Finsler metrizability in terms of a second order partial differential system. In this paper we investigate the integrability of the Rapcsák system and the extended Rapcsák system, by using the Spencer version of the Cartan-Kähler theorem. We also consider the extended Rapcsák system completed with the curvature condition. We prove that in the non-isotropic case there is a nontrivial Spencer cohomology group in the sequences...
On the set of homogeneous geodesics of a left-invariant metric.
On the spectral theory and dynamics of asymptotically hyperbolic manifolds
We present a brief survey of the spectral theory and dynamics of infinite volume asymptotically hyperbolic manifolds. Beginning with their geometry and examples, we proceed to their spectral and scattering theories, dynamics, and the physical description of their quantum and classical mechanics. We conclude with a discussion of recent results, ideas, and conjectures.
On tori having poles.
Periodic geodesics generator.
Periodic trajectories of a class of Lorentz-metrics of a time-dependent gravitational field.