Abstract : Given a regular cardinal κ > ω 1 and a cardinal λ with κ ≤ cf (λ) < λ, we show that NS κ,λ | T is not λ+-saturated, where T is the set of all a∈Pκ(λ) such that |a|=|a∩κ| and cf(sup(a∩κ))=cf(sup(a))=ω.
https://hal-normandie-univ.archives-ouvertes.fr/hal-02145592
Contributeur : Pierre Matet
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Soumis le : lundi 3 juin 2019 - 10:28:43
Dernière modification le : vendredi 28 juin 2019 - 16:37:53
Pierre Matet. Non-saturation of the nonstationary ideal on P κ (λ) in case κ ≤ cf (λ) < λ. Archive for Mathematical Logic, Springer Verlag, 2012, 51 (3-4), pp.425-432. ⟨10.1007/s00153-012-0270-2⟩. ⟨hal-02145592⟩
