34 citations · 76 across the 19 of their papers we have counts for
5 papers · 1 filter
A simplification problem in manifold theory
Jean-Claude Hausmann, Bjørn Jahren
Two smooth manifolds M and N are called R-diffeomorphic if their product with the real line are diffeomorphic. We consider the following simplification problem: does R-diffeomorphi…
Conjugation spaces and 4-manifolds
Ian Hambleton, Jean-Claude Hausmann
We show that 4-dimensional conjugation manifolds are all obtained from branched 2-fold coverings of knotted surfaces in Z/2-homology 4-spheres.
Equivariant Bundles and Isotropy Representations
Ian Hambleton, Jean-Claude Hausmann
We introduce a new construction, the isotropy groupoid, to organize the orbit data for split -spaces. We show that equivariant principal -bundles over split -CW complexes…
Geometric descriptions of polygon and chain spaces
Jean-Claude Hausmann
We give a few simple methods to geometically describe some polygon and chain-spaces in R^d. They are strong enough to give tables of m-gons and m-chains when m <= 6.
Equivariant principal bundles over spheres and cohomogeneity one manifolds
Ian Hambleton, Jean-Claude Hausmann
We classify SO(n)-equivariant principal bundles over in terms of their isotropy representations over the north and south poles. This is an example of a general result classif…