Correction to my paper "Topological contraction principle" (Fundamenta Mathematicae 110 (1980), pp. 135-144)
Corrections to "On the computation of the Nielsen numbers and the converse of the Lefschetz coincidence theorem" (Fund. Math. 140 (1992), 191–196)
Corrigendum et addendum ad: “Minimal cell coverings of sphere bundles over spheres”
Corrigendum to: “On ".
Counting connected components of the complement of the image of a codimension 1 map
Covering maps for locally path-connected spaces
We define Peano covering maps and prove basic properties analogous to classical covers. Their domain is always locally path-connected but the range may be an arbitrary topological space. One of characterizations of Peano covering maps is via the uniqueness of homotopy lifting property for all locally path-connected spaces. Regular Peano covering maps over path-connected spaces are shown to be identical with generalized regular covering maps introduced by Fischer and Zastrow....
Coverings and ring-groupoids.
Critical point theory with symmetries.
Deformations of Algebras and Cohomology of Fixed Point Sets.
Degré topologique pour les fonctions convexes.
El objeto de esta nota es presentar una noción del grado topológico para funciones reales convexas sci (semicontinuas inferiormente) basándose en la teoría del grado introducida por F. Browder.
Der Conner-Floyd-Isomorphismus für Abelsche Gruppen.
Diametrically contractive maps and fixed points.
Die Euler-Poincaré-Charakteristik und ihre topologische Weiterentwicklung.
Dimension and -translations
Some theorems characterizing the metric and covering dimension of arbitrary subspaces in a Euclidean space will be obtained in terms of -translations; some of them were proved in our previous paper [G1] under the additional assumption of the boundedness of subspaces.
Dimension theory and large Riemannian manifolds.
Dimensionsgrad for locally connected Polish spaces
It is shown that for every n ≥ 2 there exists an n-dimensional locally connected Polish space with Dimensionsgrad 1.
Dualité dans la cohomologie des espaces localement compacts
Duan's fixed point theorem: proof and generalization.
Důkaz Brouwerovy věty metodou teorie grafů
Dynamical zeta functions, congruences in Nielsen theory and Reidemeister torsion
In this paper we prove trace formulas for the Reidemeister numbers of group endomorphisms and the rationality of the Reidemeister zeta function in the following cases: the group is finitely generated and the endomorphism is eventually commutative; the group is finite; the group is a direct sum of a finite group and a finitely generated free Abelian group; the group is finitely generated, nilpotent and torsion free. We connect the Reidemeister zeta function of an endomorphism of a direct sum of a...