A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä
A numerical scale for non-locally connected planar continua
Tekijät: Timo Jolivet, Benoît Loridant, Jun Luo
Kustantaja: ELSEVIER SCIENCE BV
Julkaisuvuosi: 2016
Journal: Topology and its Applications
Tietokannassa oleva lehden nimi: TOPOLOGY AND ITS APPLICATIONS
Lehden akronyymi: TOPOL APPL
Vuosikerta: 202
Aloitussivu: 21
Lopetussivu: 39
Sivujen määrä: 19
ISSN: 0166-8641
eISSN: 1879-3207
DOI: https://doi.org/10.1016/j.topol.2015.12.060
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.