Idempotents of compact monothetic semiclosure semigroups
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Ján Šipoš (1989)
Mathematica Slovaca
Viacheslav I. Malykhin (1999)
Commentationes Mathematicae Universitatis Carolinae
We construct in Bell-Kunen’s model: (a) a group maximal topology on a countable infinite Boolean group of weight and (b) a countable irresolvable dense subspace of . In this model .
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