On the group of homotopy equivalences of simply connected five manifolds.
On the homotopy embeddability of complexes in Euclidean space. I. The weak thickening theorem.
On the structure of 5-dimensional Poincaré duality spaces.
Poincaré Dualität für Räume mit Normalisierung
Poincaré duality and commutative differential graded algebras
We prove that every commutative differential graded algebra whose cohomology is a simply-connected Poincaré duality algebra is quasi-isomorphic to one whose underlying algebra is simply-connected and satisfies Poincaré duality in the same dimension. This has applications in rational homotopy, giving Poincaré duality at the cochain level, which is of interest in particular in the study of configuration spaces and in string topology.
Poincaré Duality and Groups of Type (FP).
Poincaré duality and integral cycles
Poincaré duality groups of dimension two.
Poincaré duality groups of dimension two, II.
Poincaré Spaces, Their Normal Fibrations and Surgery.
Poincaré submersions.
Rational L-groups of Bieberbach groups.
Seifert Fibre Spaces and Poincaré Duality Groups.
Singularities, double points, controlled topology and chain duality.
Spherical Fibrations and Manifolds.
-structures and homotopy equivalences.
Splitting Theorems for Certain PD3-Groups.
Splittings of Poincaré Duality Groups.
Sur certaines équivalences d'homotopies
On sait qu’il y a 144 classes d’homotopies d’applications de dans lui-même dont la restriction à est homotope à l’identité: ce sont des exemples d’applications qui induisent l’identité en homologie et en homotopie. Plus généralement, soit un complexe de Poincaré 1-connexe de dimension , qui n’a pas le type d’homotopie rationnelle de : si est formel, nous montrons que le groupe des classes d’homotopies d’applications de dans , dont la restriction au -squelette est homotope à l’identité,...
The Formal Dimension of a Toplogical Space.