arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1912.02130math.LO
收藏

$\kappa$-强正常力迫公理

The $κ$-Strongly Proper Forcing Axiom

David Asperó, Sean Cox, Asaf Karagila, Christoph Weiss

AI总结:

研究高阶力迫公理的相容性,通过超紧基数力迫得到$\kappa$-强正常且$\kappa$-格力迫公理的一致性,消除大基数需求,并构造$2^\kappa$任意大的模型,同时证明其某些自然强化的不相容性。

摘要:

我们研究获得力迫公理相容性的方法,特别是更高阶的力迫公理。我们首先在一个具有超紧基数$\theta>\kappa$的模型上进行力迫,以获得$\kappa$-强正常且$\kappa$-格力迫概念的力迫公理的相容性,然后消除对大基数的需求。证明通过$\kappa$-强正常力迫的一个自然反射性质进行。我们还构造了该力迫公理的一个模型,其中$2^\kappa$任意大,并证明了该公理某些自然强化的不相容性。

英文摘要:

We study methods to obtain the consistency of forcing axioms, and particularly higher forcing axioms. We first force over a model with a supercompact cardinal $θ>κ$ to get the consistency of the forcing axiom for $κ$-strongly proper forcing notions which are also $κ$-lattice, and then eliminate the need for large cardinals. The proof goes through a natural reflection property for $κ$-strongly proper forcings. We also produce a model of this forcing axiom with $2^κ$ arbitrarily large, and prove the inconsistency of certain natural strengthenings of the axiom.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑