34 citations · 76 across the 19 of their papers we have counts for
22 papers
The cell-dispensability obstruction for spaces and manifolds
Jean-Claude Hausmann
We compare two properties for a CW-space of finite type: (1) being homotopy equivalent to a CW-complex without -cells for (()-cellfree) and (2) $H…
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…
Counting polygon spaces, Boolean functions and majority games
Jean-Claude Hausmann
We explain why numbers occurring in the classification of polygon spaces coincide with numbers of self-dual equivalence classes of threshold functions, or of regular Boolean functi…
Triangles on planar Jordan -curves
Jean-Claude Hausmann
We prove that a Jordan $\calc^1$-curve in the plane contains any non-flat triangle up to translation and homothety with positive ratio. This is false if the curve is not . The…
Simple Hamiltonian manifolds
Jean-Claude Hausmann, Tara S. Holm
A simple Hamiltonian manifold is a closed connected symplectic manifold equipped with a Hamiltonian action of a torus T with moment map Phi: M-->t^*, such that the fixed set M^T ha…
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.