Displaying similar documents to “Ultrafilters over measurable cardinals”

Thin ultrafilters

Jana Flašková (2005)

Acta Universitatis Carolinae. Mathematica et Physica

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Compounding Objects

Zvonimir Šikić (2020)

Bulletin of the Section of Logic

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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 is actually unconvincing in the case of ultrafilters. As a bonus, we get a very simple proof of Łoś's theorem.