Ordinal ultrafilters versus P-hierarchy

• Autorzy: Andrzej Starosolski
• Języki publikacji: EN

Abstrakty

EN

An earlier paper [Starosolski A., P-hierarchy on βω, J. Symbolic Logic, 2008, 73(4), 1202–1214] investigated the relations between ordinal ultrafilters and the so-called P-hierarchy. The present paper focuses on the aspects of characterization of classes of ultrafilters of finite index, existence, generic existence and the Rudin-Keisler-order.

Słowa kluczowe

EN

P-hierarchy; Ordinal ultrafilters; P-points; Monotone sequential contour; (Relatively) RK-minimal points

Kategorie tematyczne

• 03E05: Other combinatorial set theory
• 03E20: Other classical set theory (including functions, relations, and set algebra)

• Wydawca: De Gruyter Open
• Czasopismo: Open Mathematics
• Rocznik: 2014
• Tom: 12
• Numer: 1
• Strony: 84-96

Daty

wydano

2014-01-01

online

2013-10-30

Twórcy

autor

Andrzej Starosolski

• Silesian University of Technology,

Bibliografia

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Identyfikatory

DOI

10.2478/s11533-013-0320-y