Eine Verallgemeinerung Topologischer Mannigfaltigkeiten.
Embedding, compression and fiberwise homotopy theory.
E...-spaces and injective ...-spaces.
General Position in the Poincaré Duality Category.
Generalized manifolds ANR's and AR's and null decompositions of manifolds
Geometrically Defined Transfers, Comparisons.
Homogeneous cohomology manifolds which are inverse limits
Intersection R-Torsion and Analytic Torsion for Pseudomanifolds.
Intersection Whitehead Torsion and the s-Cobordism Theorem for Pseudomanifolds.
Isolated fixed points of circle actions on 4-manifolds.
Lefschetz fixed point theorem for intersection homology.
Line bundles with . A six dimensional example
We exhibit a six dimensional manifold with a line bundle on it which is not the pullback of a bundle on .
Line bundles with . Higher order obstruction
We study secondary obstructions to representing a line bundle as the pull-back of a line bundle on and we interpret them geometrically.
Local subhomeotopy groups of bounded surfaces.
Manifolds with a special type of conelike singularities.
Morphisms between spaces of leaves viewed as fractions
Nichtdifferenzierbare Morphismen differenzierbarer Räume.
On 4-manifolds with free fundamental group.
On a Theorem of Barden.
On -bubbles in n-dimensional compacta
A topological space X is called an -bubble (n is a natural number, is Čech cohomology with integer coefficients) if its n-dimensional cohomology is nontrivial and the n-dimensional cohomology of every proper subspace is trivial. The main results of our paper are: (1) Any compact metrizable -bubble is locally connected; (2) There exists a 2-dimensional 2-acyclic compact metrizable ANR which does not contain any -bubbles; and (3) Every n-acyclic finite-dimensional -trivial metrizable compactum...