Mathematics – Logic
Scientific paper
2012-01-10
Mathematics
Logic
21 pages
Scientific paper
An earlier paper, entitled "P-hierarchy on $\beta\omega$", 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.
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