On the singularity of Mazurkiewicz in absolute neighborhood retracts
On the Uniqueness of the Topological Degree for k-Set-Contractions.
Once More on the Lefschetz Fixed Point Theorem
An abstract version of the Lefschetz fixed point theorem is presented. Then several generalizations of the classical Lefschetz fixed point theorem are obtained.
Periodic solutions for nonautonomous differential equations and inclusions in tubes.
Remark on ANR-divisors
Residual sets not of maximum dimension
Selections and near-selections in metric linear spaces without local convexity
We characterize the AR property in convex subsets of metric linear spaces in terms of certain near-selections.
Symmetrie Products of ANR's.
The compact extension property: the role of compactness
We consider separable metrizable topological spaces. Among other things we prove that there exists a non-contractible space with the compact extension property and we prove a new version of realization of polytopes for ’s.
The Product Formula for the Topological Degree of Strict ...-Contractions.
The Whitehead Theorem in the theory of shapes
Topology and dimension of stable planes: On a conjecture of H. Freudenthal.
Une caractérisation des rétractes absolus de voisinage
We prove that a metric space is an ANR if, and only if, every open subset of X has the homotopy type of a CW-complex.
Various approaches to the fundamental groups