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Proceedings of the American Mathematical Society

ISSN 1088-6826(online) ISSN 0002-9939(print)



$ p$-points in iterated forcing extensions

Author: Judy Roitman
Journal: Proc. Amer. Math. Soc. 69 (1978), 314-318
MSC: Primary 02K05
MathSciNet review: 0469759
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Abstract: Selective ultrafilters exist in direct iterated ccc extensions whose length has uncountable cofinality, as do p-points which are not selective. Nonselective p-points also exist e.g. in an iterated Laver or Mathias extension of length $ {\omega _2}$ over a model of CH.

References [Enhancements On Off] (What's this?)

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