Praca poświęcona jest różnym aspektom ściągalności i ich związkom z tzw. ANR-ami. Szczególna uwagapoświęcona jest abstrakcyjnym wielościanom (czyli bryłom kompleksów symplicjalnych dowolnej mocy)wyposażonym w topologię Whitehead'a. Wprowadzone są przestrzenie LC^n i podanych jest kilka ichcharakteryzacji (m.in. przez przedłużalność odwzorowań ciągłych, przez homotopie czy częściowąrealizację wielościanów). Głównym wynikiem pracy jest twierdzenie Dugundjiego charakteryzująceskończenie wymiarowe ANR-y.The paper is devoted to various aspects of contractibility and their connections with so-calledANR's. Simplicial complexes and their spaces (equipped with the Whitehead topology) are widelystudied. LC^n spaces are introduced and characterized (e...
The paper studies the extension problem of continuous maps between axiomatic locally finite spaces (...
Abstract. We characterize metric spaces X whose hyperspaces 2X or Bd(X) of non-empty closed (bounded...
AbstractLet Y be a finite full subcomplex of a simplicial complex X. For any subdivision X′ of X kee...
Praca poświęcona jest zagadnieniu retraktów, absolutnych retraktów (otoczeniowych). Główny nacisk po...
AbstractWe characterize complete metric absolute (neighborhood) retracts in terms of existence of ce...
AbstractIn this paper we generalize the concept of absolute neighborhood retract by introducing the ...
In this note we discuss the information needed to compute the homology groups of a topological space...
SummaryTwo finite simplicial complexes have the same simple homotopy type if and only if, when they ...
Let Y be an absolute neighbourhood retract (ANR) for the class of metric spaces and let X be a topol...
Abstract. We investigate one-point reduction methods of finite topological spaces. These methods all...
AbstractIf X is a finite-dimensional, complete, metric AR (or ANR), then X×R∞ is R∞ (or an open subs...
ing generalization of absolute neighborhood retracts. Definition. A compact subset X of a metric spa...
The basic result of Oka theory, due to Gromov, states that every continuous map f from a Stein manif...
AbstractK. Borsuk proved that the intersection of a decreasing sequence of AR's is a fundamental abs...
In recent years a number of generalizations of the notion of absolute neighborhood retract (ANR) hav...
The paper studies the extension problem of continuous maps between axiomatic locally finite spaces (...
Abstract. We characterize metric spaces X whose hyperspaces 2X or Bd(X) of non-empty closed (bounded...
AbstractLet Y be a finite full subcomplex of a simplicial complex X. For any subdivision X′ of X kee...
Praca poświęcona jest zagadnieniu retraktów, absolutnych retraktów (otoczeniowych). Główny nacisk po...
AbstractWe characterize complete metric absolute (neighborhood) retracts in terms of existence of ce...
AbstractIn this paper we generalize the concept of absolute neighborhood retract by introducing the ...
In this note we discuss the information needed to compute the homology groups of a topological space...
SummaryTwo finite simplicial complexes have the same simple homotopy type if and only if, when they ...
Let Y be an absolute neighbourhood retract (ANR) for the class of metric spaces and let X be a topol...
Abstract. We investigate one-point reduction methods of finite topological spaces. These methods all...
AbstractIf X is a finite-dimensional, complete, metric AR (or ANR), then X×R∞ is R∞ (or an open subs...
ing generalization of absolute neighborhood retracts. Definition. A compact subset X of a metric spa...
The basic result of Oka theory, due to Gromov, states that every continuous map f from a Stein manif...
AbstractK. Borsuk proved that the intersection of a decreasing sequence of AR's is a fundamental abs...
In recent years a number of generalizations of the notion of absolute neighborhood retract (ANR) hav...
The paper studies the extension problem of continuous maps between axiomatic locally finite spaces (...
Abstract. We characterize metric spaces X whose hyperspaces 2X or Bd(X) of non-empty closed (bounded...
AbstractLet Y be a finite full subcomplex of a simplicial complex X. For any subdivision X′ of X kee...