Abstract
In this paper, we present S. Shelah's example of a model of set theory in which there are noP-points in βN/N. This settles the famous open question: “Is ‘ZFC+there are noP-points in βN/N’ consistent?”
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Wimmers, E.L. The shelahP-point independence theorem. Israel J. Math. 43, 28–48 (1982). https://doi.org/10.1007/BF02761683
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DOI: https://doi.org/10.1007/BF02761683