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arXiv:1012.4532 [math.LO]AbstractReferencesReviewsResources

On union ultrafilters

Peter Krautzberger

Published 2010-12-21, updated 2011-02-15Version 2

We present some new results on union ultrafilters. We characterize stability for union ultrafilters and, as the main result, we construct a new kind of unordered union ultrafilter.

Categories: math.LO, math.GN
Subjects: 03E75, 54D80, 05D10
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