The shelahP-point independence theorem
@article{Wimmers1982TheSI, title={The shelahP-point independence theorem}, author={E. Wimmers}, journal={Israel Journal of Mathematics}, year={1982}, volume={43}, pages={28-48} }
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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