The hyperspace of noncut subcontinua of graphs and dendrites

Autorzy

Dane publikacji

  • DOI: 10.4064/cm8947-9-2022

  • Tom 173

  • Zeszyt 1

  • Czasopismo: Colloquium Mathematicum

  • Strony: 57-75

  • Data publikacji online: 27.03.2023

Liczba wyświetleń: 0

Liczba pobrań: 0

Abstrakt

Given a continuum $X$, let $C(X)$ denote the hyperspace of all subcontinua of $X$. In this paper we study the Vietoris hyperspace $NC^{*}(X)=\{ A \in C(X):X\setminus A$ is connected$\}$ when $X$ is a finite graph or a dendrite; in particular, we give conditions under which $NC^{*}(X)$ is compact, connected, locally connected or totally disconnected. Also, we prove that if $X$ is a dendrite and the set of endpoints of $X$ is dense, then $NC^{*}(X)$ is homeomorphic to the Baire space of irrational numbers.