A1 Refereed original research article in a scientific journal

A numerical scale for non-locally connected planar continua




AuthorsTimo Jolivet, Benoît Loridant, Jun Luo

PublisherELSEVIER SCIENCE BV

Publication year2016

JournalTopology and its Applications

Journal name in sourceTOPOLOGY AND ITS APPLICATIONS

Journal acronymTOPOL APPL

Volume202

First page 21

Last page39

Number of pages19

ISSN0166-8641

eISSN1879-3207

DOIhttps://doi.org/10.1016/j.topol.2015.12.060


Abstract

We introduce a numerical scale to quantify to which extent a planar continuum is not locally connected. For a locally connected continuum, the numerical scale is zero; for a continuum like the topologist's sine curve, the scale is one; for an indecomposable continuum, it is infinite. We use a purely topological framework of fibers and further characterize the local connectedness of a planar continuum in terms of triviality of its fibers. (C) 2016 Elsevier B.V. All rights reserved.




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