0000000000362539

AUTHOR

Wiesław Kubiś

showing 2 related works from this author

Finitely fibered Rosenthal compacta and trees

2009

We study some topological properties of trees with the interval topology. In particular, we characterize trees which admit a 2-fibered compactification and we present two examples of trees whose one-point compactifications are Rosenthal compact with certain renorming properties of their spaces of continuous functions.

Pure mathematics54D30 46B03 46E15 54C35 54G12Algebra and Number TheoryApplied MathematicsGeneral Topology (math.GN)Fibered knotMathematics::General TopologyFunctional Analysis (math.FA)Mathematics - Functional AnalysisComputational MathematicsFOS: MathematicsCompactification (mathematics)Geometry and TopologyAnalysisMathematics - General TopologyMathematicsRevista de la Real Academia de Ciencias Exactas, Fisicas y Naturales. Serie A. Matematicas
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Almost disjoint families of countable sets and separable complementation properties

2012

We study the separable complementation property (SCP) and its natural variations in Banach spaces of continuous functions over compacta $K_{\mathcal A}$ induced by almost disjoint families ${\mathcal A}$ of countable subsets of uncountable sets. For these spaces, we prove among others that $C(K_{\mathcal A})$ has the controlled variant of the separable complementation property if and only if $C(K_{\mathcal A})$ is Lindel\"of in the weak topology if and only if $K_{\mathcal A}$ is monolithic. We give an example of ${\mathcal A}$ for which $C(K_{\mathcal A})$ has the SCP, while $K_{\mathcal A}$ is not monolithic and an example of a space $C(K_{\mathcal A})$ with controlled and continuous SCP …

Discrete mathematicsWeak topologyApplied MathematicsBanach spaceMathematics::General TopologyDisjoint setsFunctional Analysis (math.FA)Separable spaceMathematics - Functional AnalysisCardinalityDisjoint union (topology)FOS: MathematicsPrimary: 46E15 03E75. Secondary: 46B20 46B26Countable setUncountable setAnalysisMathematicsJournal of Mathematical Analysis and Applications
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