Adjoining Almost Disjoint Permutations

Mathematical Logic Quarterly 48 (2):189-193 (2002)
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Abstract

We show that it is consistent with ZFC + ¬CH that there is a maxima a most disjoint permutation family A ⊆ Symsuch that A is a proper subset of an eventually different family E ⊆ ℕℕ and |A| < |E|. We also ask severa questions in this area

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10.1002/1521-3870(200202)48:2

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Yi Zhang
Humboldt-University, Berlin

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Towards a Problem of E. van Douwen and A. Miller.Yi Zhang - 1999 - Mathematical Logic Quarterly 45 (2):183-188.
On a Class of M.A.D. Families.Yi Zhang - 1999 - Journal of Symbolic Logic 64 (2):737-746.

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