On a generic property of geodesic flows.
On Blaschke manifolds and harmonic manifolds
On Conjugate and Focal Points in Semi-Riemannian Geometry.
On Existence and Comparison of Conjugate Points in Riemannian and Lorentzian Geometry.
On extremal mappings in complex ellipsoids
Using a generalization of [Pol] we present a description of complex geodesics in arbitrary complex ellipsoids.
On lengths of closed geodesics
On Metrics on S2 All of Whose Geodesics Are Closed.
On non-Uniqueness of Complex Geodesies in Convex Bounded Domains
Si studiano «combinazioni convesse complesse» per mappe olomorfe dal disco unità di in un dominio convesso limitato di uno spazio di Banach complesso , e se ne traggono conseguenze sul carattere globale della non unicità per le geodetiche complesse di .
On some class of nearly conformally symmetric manifolds
On the closedness of approximation spectra
Generalizing Cusick’s theorem on the closedness of the classical Lagrange spectrum for the approximation of real numbers by rational ones, we prove that various approximation spectra are closed, using penetration properties of the geodesic flow in cusp neighbourhoods in negatively curved manifolds and a result of Maucourant [Mau].
On the connection between the nonholonomic metric on the Heisenberg group with the Grushin metric.
On the Differentiability of a Distance Function
On the Entropy of the Geodesic Flow in Manifolds Without Conjugate Points.
On the Equivariant Morse Chain Complex of the Space of Closed Curves.
On the Existence of Closed Geodesics on Spherical Manifolds.
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.