Displaying similar documents to “On the existence of true uniform ultrafilters”

The G δ -topology and incompactness of ω α

Isaac Gorelic (1996)

Commentationes Mathematicae Universitatis Carolinae

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We establish a relation between covering properties (e.gĿindelöf degree) of two standard topological spaces (Lemmas 4 and 5). Some cardinal inequalities follow as easy corollaries.