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Published in 2018 at "Topology and its Applications"
DOI: 10.1016/j.topol.2018.02.005
Abstract: Abstract Given a metric space X = ( X , d ) we show in ZF that: (a) The following are equivalent: (i) For every two closed and disjoint subsets A , B of X,…
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Keywords:
real valued;
continuous real;
spaces continuous;
uniformly continuous ... See more keywords
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Published in 2019 at "Topology and its Applications"
DOI: 10.1016/j.topol.2018.11.008
Abstract: Abstract The various types of ultrafilter-completeness on zero-sets of uniformly continuous functions are introduced, their properties are studied and characterizations in the category Z U n i f are given.
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Keywords:
continuous functions;
uniformly continuous;
ultrafilter completeness;
sets uniformly ... See more keywords
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Published in 2020 at "Topology and its Applications"
DOI: 10.1016/j.topol.2020.107369
Abstract: Abstract Straight spaces are metric spaces X having the property that for a cover X = A ∪ B by two closed sets, any continuous function f : X → R is uniformly continuous provided…
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Keywords:
versions straightness;
continuous functions;
uniformly continuous;
pre straight ... See more keywords