A few topological problems
Absolute suspensions and cones
An annulus theorem for suspension spheres
An infinite-dimensional torsion-free FP...group.
Analyse dans les topos lisses
Constructing exotic retracts, factors of manifolds, and generalized manifolds via decompositions
Detecting codimension one manifold factors with the piecewise disjoint arc-disk property and related properties
We show that all finite-dimensional resolvable generalized manifolds with the piecewise disjoint arc-disk property are codimension one manifold factors. We then show how the piecewise disjoint arc-disk property and other general position properties that detect codimension one manifold factors are related. We also note that in every example presently known to the authors of a codimension one manifold factor of dimension n ≥ 4 determined by general position properties, the piecewise disjoint arc-disk...
E...-spaces and injective ...-spaces.
Homogeneous cohomology manifolds which are inverse limits
Isolated fixed points of circle actions on 4-manifolds.
Morphisms between spaces of leaves viewed as fractions
Nichtdifferenzierbare Morphismen differenzierbarer Räume.
On manifolds with nonhomogeneous factors
We present simple examples of finite-dimensional connected homogeneous spaces (they are actually topological manifolds) with nonhomogeneous and nonrigid factors. In particular, we give an elementary solution of an old problem in general topology concerning homogeneous spaces.
On Poincaré Duality Groups of Poly-Linear Type and Their Realisations.
On some operation on sets of mappings
The Index of Manifolds with Toral Actions and Geometric Interpretations of the ... (..., (S1, Mn)) Invariant of Atiyah and Singer.
The Relationship between Homology and Topological Manifolds via Homology Transversaltiy
The Topological Version of Groups Generated by Reflections.
Transversality Theories at Dimension Four.
Variétés d'orbites