A comparison principle and extension of equivariant maps.
A Converse to the P.A. Smith Theorem for Nonunitary Homology Spheres.
A Counterexample to a Conjecture of Steenrod.
A decomposition into homeomorphic handlebodies with naturally equivalent involutions.
A Homology Transfer for a Class of Simplicial Maps.
A linearity theorem for group actions on spheres with applications to homotopy representations.
A Narasimhan-Seshardri-Donaldson Correspondance over Non-orientable Surfaces.
A note on the converse of the Lefschetz theorem for G-maps
The purpose of this note is to prove the converse of the Lefschetz fixed point theorem (CLT) together with an equivariant version of the converse of the Lefschetz deformation theorem (CDT) in the category of finite G-simplicial complexes, where G is a finite group.
A split exact sequence of Mackey functors.
Abelian group actions on algebraic varieties with one fixed point.
Actions cycliques libres sur les 3-Q-sphères
Actions de groupes finis sur : la conjecture de P. A. Smith
Actions of on some surface-bundles over
An Algebraic Model for G-Simple Homotopy Types.
An Equivariant Lefschetz Formula for Finite Reductive Groups.
Äquivariante 2-Felder auf Mannigfaltigkeiten mit Involution.
Äquivariante Homotopie, äquivarianter Bordismus und freie differenzierbare Involutionen auf Sphären.
Balanced splittings of Semi-free actions of finite groups on homotopy spheres.
Cancellation of hyperbolic forms and topological four-manifolds.
Centralizers of gap groups
A finite group G is called a gap group if there exists an ℝG-module which has no large isotropy groups except at zero and satisfies the gap condition. The gap condition facilitates the process of equivariant surgery. Many groups are gap groups and also many groups are not. In this paper, we clarify the relation between a gap group and the structures of its centralizers. We show that a nonsolvable group which has a normal, odd prime power index proper subgroup is a gap group.