Przeglądaj Bulletin of the Section of Logic według tematu "ultrafilter"
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Compounding Objects
(Wydawnictwo Uniwersytetu Łódzkiego, 2020-06-30)We prove a characterization theorem for filters, proper filters and ultrafilters which is a kind of converse of Łoś's theorem. It is more natural than the usual intuition of these terms as large sets of coordinates, which ...