Journal of Symbolic Logic 85 (1):26-36 (2020)

Abstract
We answer a question of Blass, Di Nasso, and Forti [2, 7] by proving, assuming Continuum Hypothesis or Martin’s Axiom, that there exists a P-point which is not interval-to-one and there exists an interval-to-one P-point which is neither quasi-selective nor weakly Ramsey.
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DOI 10.1017/jsl.2019.79
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