Dehnungsuntersuchungen an Sphärenabbildungen.
Deloopings of the spaces of long embeddings
The homotopy fiber of the inclusion from the long embedding space to the long immersion space is known to be an iterated based loop space (if the codimension is greater than two). In this paper we deloop the homotopy fiber to obtain the topological Stiefel manifold, combining results of Lashof and of Lees. We also give a delooping of the long embedding space, which can be regarded as a version of Morlet-Burghelea-Lashof's delooping of the diffeomorphism group of the disk relative to the boundary....
Démonstration homologique des théorèmes de périodicité de Bott, I
Démonstration homologique des théorèmes de périodicité de Bott, II. Homologie et cohomologie des groupes classiques et de leurs espaces homogènes
Démonstration homologique des théorèmes de périodicité de Bott, III
Dénombrement des types de K-homotopie. Théorie de la déformation
Depth and equivariant cohomology.
Der Cohomologiering von komplexen Quadriken.
Der Conner-Floyd-Isomorphismus für Abelsche Gruppen.
Der Einfluss von K*(-) auf U* (-).
Der freie Schleifenraum für Räume mit fast freier rationaler Kohomologie-Algebra.
Der Pontryagin-Ring von Quotienten eines Torus.
Derivations on the Nijenhuis-Schouten bracket algebra
Derived de Rham Complex and Cyclic Homology.
Describing toric varieties and their equivariant cohomology
Topologically, compact toric varieties can be constructed as identification spaces: they are quotients of the product of a compact torus and the order complex of the fan. We give a detailed proof of this fact, extend it to the non-compact case and draw several, mostly cohomological conclusions. In particular, we show that the equivariant integral cohomology of a toric variety can be described in terms of piecewise polynomials on the fan if the ordinary integral cohomology is concentrated in even...
Detecting Stable Homotopy Classes by Primary BP Cohomology Operations.
Detection of some lements in the stable homotopy groups of spheres.
Diagonal fibrations are pointwise fibrations.
Diagonals on the permutahedra, multiplihedra and associahedra.
Diametrically contractive maps and fixed points.