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arXiv 1910.01697cs.LO
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模态逻辑S5的Henkin式完备性证明

A Henkin-style completeness proof for the modal logic S5

Bruno Bentzen

摘要:

本文提出了一个最近的形式化的Henkin风格的完整性证明的命题模态逻辑S5使用精益定理证明。形式化的证明接近于Hughes和Cresswell的证明,但是这个系统基于不同的公理选择,更好地描述为一个Mendelson系统,增加了K,T,S4和B的公理方案,以及必要性规则作为推理规则。该语言有假和蕴涵作为唯一的原始逻辑连接词和必要性作为唯一的原始模态算子。完整的源代码可以在www.example.com上获得,并且已经使用Lean 3.4.2进行了类型检查。

英文摘要:

This paper presents a recent formalization of a Henkin-style completeness proof for the propositional modal logic S5 using the Lean theorem prover. The proof formalized is close to that of Hughes and Cresswell, but the system, based on a different choice of axioms, is better described as a Mendelson system augmented with axiom schemes for K, T, S4, and B, and the necessitation rule as a rule of inference. The language has the false and implication as the only primitive logical connectives and necessity as the only primitive modal operator. The full source code is available online at https://github.com/bbentzen/mpl/ and has been typechecked with Lean 3.4.2.

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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