Abstract : We study variants of (more or less) known square‐like principles obtained by replacing equality with covering. We show that these weaker principles are still strong enough to yield scales with many good (or even better) points. Such scales can be used to construct large pseudo‐Kurepa families.
https://hal-normandie-univ.archives-ouvertes.fr/hal-02145570
Contributeur : Pierre Matet
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Soumis le : lundi 3 juin 2019 - 10:15:14
Dernière modification le : vendredi 28 juin 2019 - 16:39:00
Pierre Matet. Scales with various kinds of good points. Mathematical Logic Quarterly, Wiley, 2018, 64 (4-5), pp.349-370. ⟨10.1002/malq.201600047⟩. ⟨hal-02145570⟩
