The hyperspace of non-cut subcontinua of graphs

Given a continuum $X$, let $C(X)$ be the hyperspace of all subcontinua of $X$. We consider the hyperspace $NC^{*}(X)=\{A\in C(X):X\setminus A$ is connected$\}$. In this paper we prove that the only locally connected continua $X$ for which $NC^{*}(X)$ is compact are the arcs and the simple closed curves. We also characterize the finite graphs $G$ for which $NC^{*}(G)$ is connected.

Publication Details

Journal
ArXiv.org
Published
2025-03-23
Primary Topic
Advanced Topology and Set Theory
Type
article
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article

The hyperspace of non-cut subcontinua of graphs

ArXiv.org
Advanced Topology and Set Theory
article

The hyperspace of non-cut subcontinua of graphs

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Abstract

Given a continuum $X$, let $C(X)$ be the hyperspace of all subcontinua of $X$. We consider the hyperspace $NC^{*}(X)=\{A\in C(X):X\setminus A$ is connected$\}$. In this paper we prove that the only locally connected continua $X$ for which $NC^{*}(X)$ is compact are the arcs and the simple closed curves. We also characterize the finite graphs $G$ for which $NC^{*}(G)$ is connected.

ArXiv.org
Openalex Percentile: Top 43%
Advanced Topology and Set Theory
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The hyperspace of non-cut subcontinua of graphs · ArXiv.org (2025) | TGRS Research Map | TGRS