The space of w-limit sets of piecewise continuous maps of the interval

According to a well-known result, the collection of all w-limit sets of a continuous map of the interval equipped with the Hausdorff metric is a compact metric space. In this paper, a similar result is proved for piecewise continuous maps with finitely many points of discontinuity, if the points of...

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Published in:Journal of difference equations and applications 2010-02, Vol.16 (2-3), p.275-290
Main Authors: Hofbauer, Franz, Raith, Peter, Smital, Jaroslav
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Language:English
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Continuity
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Intervals
Metric space
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Raith, Peter
Smital, Jaroslav
description According to a well-known result, the collection of all w-limit sets of a continuous map of the interval equipped with the Hausdorff metric is a compact metric space. In this paper, a similar result is proved for piecewise continuous maps with finitely many points of discontinuity, if the points of discontinuity are not periodic for any variant of the map. A variant of f is a map g coinciding with f at any point of continuity and being continuous from one side at any point of discontinuity. It is also shown that w-limit sets of these maps are locally saturating, another property known for continuous maps. However, contrary to the situation for continuous maps, there are piecewise continuous maps having locally saturating sets which are not w-limit sets. A condition implying that a locally saturating set is an w-limit set is presented.
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subjects Collection
Continuity
Difference equations
Discontinuity
Intervals
Metric space
title The space of w-limit sets of piecewise continuous maps of the interval
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