A dynamical approach to compactify the three dimensional Lorentz group.
A Periodic Flow with Infinite Epstein Hierarchy.
A sufficient condition for a group of homeomorphisms to be affine.
Actions localement libres du groupe affine.
Algebraic Hulls and the Folner Property.
An elementary proof of a Lima's theorem for surfaces.
An elementary proof of the following theorem is given:THEOREM. Let M be a compact connected surface without boundary. Consider a C∞ action of Rn on M. Then, if the Euler-Poincaré characteristic of M is non zero there exists a fixed point.
Asymptotic Properties of Foliations
Automorphism Groups of Second Order Differential Equations.
Bifurcation from relative equilibria of noncompact group actions: Skew products, meanders, and drifts.
Bundles with Totally Disconnected Structure Group
Caractérisation des opérations d'algèbres sur les modules différentiels
Compact solvmanifolds of dimension at most 4.
Completing Lie algebra actions to Lie group actions.
Complexification of proper hamiltonian -spaces
Dimension des orbites d'une action de ... sur une variété compacte.
Enden von Räumen mit eigentlichen Transformationsgruppen
Equivalence of control systems with linear systems on Lie groups and homogeneous spaces
The aim of this paper is to prove that a control affine system on a manifold is equivalent by diffeomorphism to a linear system on a Lie group or a homogeneous space if and only if the vector fields of the system are complete and generate a finite dimensional Lie algebra. A vector field on a connected Lie group is linear if its flow is a one parameter group of automorphisms. An affine vector field is obtained by adding a left invariant one. Its projection on a homogeneous space, whenever it exists,...
Ergodic theory, semisimple Lie groups and foliations by manifolds of negative curvature
Examples of Manifolds which are Homogeneous Spaces de Lie Groups of Arbitrarily Large Dimension.
Foliations of defined by -actions
In this paper we give a geometric characterization of the 2-dimensional foliations on compact orientable 3-manifolds defined by a locally free smooth action of .