Extension du principe de prolongement des identites aux applications des espaces semi-topogenes
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On -caliber and an application of Prikry’s partial order
Andrzej Szymański (2011)
Commentationes Mathematicae Universitatis Carolinae
We study the concept of -caliber as an alternative to the well known concept of caliber. -caliber and caliber values coincide for regular cardinals greater than or equal to the Souslin number of a space. Unlike caliber, -caliber may take on values below the Souslin number of a space. Under Martin’s axiom, is a -caliber of . Prikry’s poset is used to settle a problem by Fedeli regarding possible values of very weak caliber.
Structure of the set of compatible proximities when the set is finite
Dooher, T.E., Warren, R.H. (1976)
Portugaliae mathematica
Verallgemeinerte topogene Ordnungen.
Dieter Leseberg (1985)
Monatshefte für Mathematik
Currently displaying 1 – 4 of 4
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