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Norms on possibilities II: more ccc ideals on 2^{omega}

Andrzej Rosłanowski·Saharon Shelah
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Abstract

We use the method of norms on possibilities to answer a question of Kunen and construct a ccc sigma --ideal on 2^omega with various closure properties and distinct from the ideal of null sets, the ideal of meager sets and their intersection.

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Andrzej Rosłanowski, Saharon Shelah. 1997-03-15. Norms on possibilities II: more ccc ideals on 2^{omega}. https://arxiv.org/abs/math/9703222

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