Group actions on fibered three-manifolds.
Group actions on homology spheres.
Group actions on hypertoral manifolds. II.
Group actions on quasi-symplectic manifolds.
Group actions on rational homology spheres
We study the homology of the fixed point set on a rational homology sphere under the action of a finite group.
Group Actions on the Chern Manifold.
Group Actions with Inequivalent Representations at Fixed Points.
Group Completions and Limit Sets of Kleinian Groups.
Groupes triangulaires lagrangiens en géométrie hyperbolique complexe
Nous présentons quelques résultats au sujet des groupes engendrés par trois involutions antiholomorphes dans le cadre du plan hyperbolique complexe .
Groups acting on covering spaces
Groups in the category of f-manifolds
Groups of piecewise linear homeomorphisms of the real line.
Groups of real analytic diffeomorphisms of the circle with a finite image under the rotation number function
We consider groups of orientation-preserving real analytic diffeomorphisms of the circle which have a finite image under the rotation number function. We show that if such a group is nondiscrete with respect to the -topology then it has a finite orbit. As a corollary, we show that if such a group has no finite orbit then each of its subgroups contains either a cyclic subgroup of finite index or a nonabelian free subgroup.
Groups of transformations of a G-structure whic H leave invariant a substructure.
Groups with Domains of Discontinuity.
Group-theoretic conditions under which closed aspherical manifolds are covered by Euclidean space
Hass, Rubinstein, and Scott showed that every closed aspherical (irreducible) 3-manifold whose fundamental group contains the fundamental group of a closed aspherical surface, is covered by Euclidean space. This theorem does not generalize to higher dimensions. However, we provide geometric tools with which variations of this theorem can be proved in all dimensions.