Arcwise connectedness of a hyperspace of non-connected subspaces of a continuum

Authors

  • Alejandro Illanes Instituto de Matemáticas, Universidad Nacional Autónoma de México

Keywords:

Arcwise connectedness, continuum, decomposability, hyperspaces, terminal subcontinua

Abstract

For a metric continuum X, let Cn(X) be the hyperspace of nonempty closed subsets of X with at most n components. Answering a question by J. Camargo and S. Macías, in this paper we prove that if n ≥ 2 and X is a hereditarily decomposable continuum not containing terminal subcontinua, then Cn(X) \ C1(X) is arcwise connected.

References

J. Brazas, Constructing arcs from paths by collapsing subloops, Rocky Mountain J. Math. 54 (2024), no. 4, 965–974.

J. Camargo and S. Macías, More on quotients of n-fold hyperspaces, Houston J. Math. 50, no. 2, (2024), 443–475.

A. Illanes and S. B. Nadler, Jr., Hyperspaces, Fundamentals and recent advances, Monographs and Textbooks in Pure and Applied Math. Vol. 216, Marcel Dekker, Inc. New York and Basel, 1999.

S. B. Nadler, Jr., Hyperspaces of Sets, Monographs and Textbooks in Pure and Applied Math. Vol. 49, Marcel Dekker, Inc., New York, N.Y. 1978. Reprinted in: Aportaciones Matemáticas de la Sociedad Matemática Mexicana, Serie Textos #33, 2006.

Published

2025-09-21

How to Cite

Illanes, A. (2025). Arcwise connectedness of a hyperspace of non-connected subspaces of a continuum. Topology Proceedings, 68, 17–22. Retrieved from https://topology.journals.yorku.ca/index.php/tp/article/view/15

Issue

Section

Continuum Theory (Research Papers)

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