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arXiv 1604.02196math.LO
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关于一阶完全模态逻辑的Fine定理

Fine's Theorem on First-Order Complete Modal Logics

Robert Goldblatt

AI总结:

本文回顾Fine典范性定理的背景与影响,提出模态逻辑典范有效性的新刻画,明确其与一阶完全性的区别,指出模态代数典范框架构造与超幂构造不可交换。

摘要:

Fine颇具影响力的典范性定理指出,若一个模态逻辑由一类一阶可定义的Kripke框架决定,则它在其典范框架中有效。本文回顾了该结果的背景与语境,以及它对后续研究产生影响的历史。随后,本文提出了一种新的刻画逻辑何时具备典范有效性的特征,明确了它与一阶完全性这一性质的区分点。核心结论是,模态代数典范框架的构造与超幂构造不可交换。

英文摘要:

Fine's influential Canonicity Theorem states that if a modal logic is determined by a first-order definable class of Kripke frames, then it is valid in its canonical frames. This article reviews the background and context of this result, and the history of its impact on further research. It then develops a new characterisation of when a logic is canonically valid, providing a precise point of distinction with the property of first-order completeness. The ultimate point is that the construction of the canonical frame of a modal algebra does not commute with the ultrapower construction.

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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