English

Ordinal ultrafilters versus P-hierarchy

Logic 2012-11-15 v2

Abstract

An earlier paper, entitled "P-hierarchy on βω\beta\omega", investigated the relations between ordinal ultrafilters and the so-called P-hierarchy. This study is continued in the present paper and focuses on the aspects of characterization of classes of finite index, existence, generic existence and the Rudin-Keisler-order.

Keywords

Cite

@article{arxiv.1201.2148,
  title  = {Ordinal ultrafilters versus P-hierarchy},
  author = {Andrzej Starosolski},
  journal= {arXiv preprint arXiv:1201.2148},
  year   = {2012}
}

Comments

19 pages

R2 v1 2026-06-21T20:02:51.473Z