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arXiv 2411.04786math.LO
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高阶算术中确定性的界限

The Limits of Determinacy in Higher-Order Arithmetic

Juan Pablo Aguilera, Thibaut Kouptchinsky

AI总结:

本文在超算术层级中逐级界定有限差分的确定性强度,推广Montalbán-Shore定理至所有Borel层级,并证明反射原理与量化确定性公理等价,解答了Pacheco和Yokoyama的两个问题。

摘要:

我们证明了超算术层级中集合的有限差分的确定性强度,在有限阶和超限阶算术子系统的框架下,逐级给出了上界和下界,将Montalbán-Shore定理推广到Borel层级中他们处理的层级之外的每一个层级。我们还证明了高阶算术的反射原理与量化确定性公理之间的等价性,回答了Pacheco和Yokoyama的两个问题。

英文摘要:

We prove level-by-level upper and lower bounds on the strength of determinacy for finite differences of sets in the hyperarithmetical hierarchy in terms of subsystems of finite-and transfinite-order arithmetic, extending the Montalbán-Shore theorem to each of the levels of the Borel hierarchy beyond the one they treated. We also prove equivalences between reflection principles for higher-order arithmetic and quantified determinacy axioms, answering two questions of Pacheco and Yokoyama.

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。

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