arXiv · math/9303207
It is proved that -- consistently -- there can be no ccc closed P-sets in the remainder space omega^* .
Ryszard Frankiewicz, Saharon Shelah, Pawel Zbierski. 1993-03-15. On closed P-sets with ccc in the space omega^*. https://arxiv.org/abs/math/9303207
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