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arXiv 2104.13124cs.LO
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一阶逻辑的组合证明与分解定理

Combinatorial Proofs and Decomposition Theorems for First-order Logic

Dominic Hughes, Lutz Straßburger, Jui-Hsuan Wu

摘要:

我们发现一阶逻辑(不平等)的组合和语法证明之间的密切关系。虽然句法证明是在基于推理规则的演绎证明系统中形式化的,但组合证明是独立于任何推理规则集的证明的无语法表示。我们表明,这两个证明表示是相关的,通过一个深推理分解定理,建立了一种新的范式的语法证明。这就产生了(a)一阶组合证明的可靠性和完备性的简单证明,以及(b)一个完全完备性定理:每个组合证明都是一个句法证明的图像。

英文摘要:

We uncover a close relationship between combinatorial and syntactic proofs for first-order logic (without equality). Whereas syntactic proofs are formalized in a deductive proof system based on inference rules, a combinatorial proof is a syntax-free presentation of a proof that is independent from any set of inference rules. We show that the two proof representations are related via a deep inference decomposition theorem that establishes a new kind of normal form for syntactic proofs. This yields (a) a simple proof of soundness and completeness for first-order combinatorial proofs, and (b) a full completeness theorem: every combinatorial proof is the image of a syntactic proof.

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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