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zbMath0606.54021MaRDI QIDQ3744873

Shoulian Yang

Publication date: 1985

Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.

zbMATH Keywords

countable compactness ultrafilters Rudin-Keisler order

Mathematics Subject Classification ID

Compactness (54D30) Cardinality properties (cardinal functions and inequalities, discrete subsets) (54A25) Product spaces in general topology (54B10)

Related Items (3)

Three orderings on \(\beta(\omega)\setminus\omega\) ⋮ Countable compactness and finite powers of topological groups without convergent sequences ⋮ Recent advances in minimal topological groups

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