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Bankston, Paul

Coarse topologies in nonstandard extensions via separative ultrafilters. (English) Zbl 0496.54040

Ill. J. Math. 27, 459-466 (1983).
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Cited in 2 Documents

MSC:

54J05 Nonstandard topology
03H99 Nonstandard models
54D15 Higher separation axioms (completely regular, normal, perfectly or collectionwise normal, etc.)
54D35 Extensions of spaces (compactifications, supercompactifications, completions, etc.)
54A25 Cardinality properties (cardinal functions and inequalities, discrete subsets)

Keywords:

Martin’s axiom; omega 1-saturated extensions; Tikhonov space; coarse topologies; nonstandard extensions; separation properties; separative ultrafilters
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