GAMES AND RAMSEY-LIKE CARDINALS
GAMES AND RAMSEY-LIKE CARDINALS
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比赛和拉姆西式的红雀队
DOI:
10.1017/jsl.2018.75
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发表时间:
2019
期刊:
影响因子:
--
通讯作者:
NIELSEN D
中科院分区:
文献类型:
--
作者:
NIELSEN D
We generalise the α-Ramsey cardinals introduced in Holy and Schlicht (2018) for cardinals α to arbitrary ordinals α, and answer several questions posed in that paper. In particular, we show that α-Ramseys are downwards absolute to the core model K for all α of uncountable cofinality, that strategic ω-Ramsey cardinals are equiconsistent with remarkable cardinals and that strategic α-Ramsey cardinals are equiconsistent with measurable cardinals for all α > ω. We also show that the n-Ramseys satisfy indescribability properties and use them to provide a game-theoretic characterisation of completely ineffable cardinals, as well as establishing further connections between the α-Ramsey cardinals and the Ramsey-like cardinals introduced in Gitman (2011), Feng (1990), and Sharpe and Welch (2011).
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DOI:
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发表时间:
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期刊:
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