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Are a and d your cup of tea?

Saharon Shelah
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Abstract

We show that, consistently, every MAD family has cardinality strictly bigger than the dominating number, that is a > d, thus solving one of the oldest problems on cardinal invariants of the continuum. The method is a contribution to the theory of iterated forcing for making the continuum large.

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Saharon Shelah. 2000-12-18. Are a and d your cup of tea?. https://doi.org/10.1007/bf02392740

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