On invariant points of monotone transforamtions in partially ordered spaces
A. Pelczar (1965)
Annales Polonici Mathematici
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A. Pelczar (1965)
Annales Polonici Mathematici
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Labros Dokas, John Stabakis (1989)
Annales de la Faculté des sciences de Toulouse : Mathématiques
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W. Słowikowski (1959)
Fundamenta Mathematicae
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Ian Stares (1995)
Commentationes Mathematicae Universitatis Carolinae
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We provide a characterisation of monotone normality with an analogue of the Tietze-Urysohn theorem for monotonically normal spaces as well as answer a question due to San-ou concerning the extension of Urysohn functions in monotonically normal spaces. We also extend a result of van Douwen, giving a characterisation of -spaces in terms of semi-continuous functions, as well as answer another question of San-ou concerning semi-continuous Urysohn functions.
Rosalind Young (1929)
Fundamenta Mathematicae
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Milan R. Tasković (1989)
Archivum Mathematicum
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