arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2007.11875cs.LO
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从2-序列和线性嵌套序列到正规模态逻辑的自然演绎

From 2-sequents and Linear Nested Sequents to Natural Deduction for Normal Modal Logics

Simone Martini, Andrea Masini, Margherita Zorzi

摘要:

本文将线性套序列和2-序列的方法推广到自然演绎中。公式用空间坐标装饰,允许按照自然演绎的原始精神制定形式系统--每个连接词只有一个引入和一个消除规则,没有额外的(结构)规则,没有明确引用预期的可及性关系克里普克模型。我们给出了从K到S4的正规模态逻辑系统。对于系统的直观版本,我们定义了证明约简,并证明了证明规范化,从而获得了一致性的语法证明。对于逻辑K和K4,我们使用存在谓词(遵循Scott)来制定合理的演绎规则。

英文摘要:

We extend to natural deduction the approach of Linear Nested Sequents and of 2-sequents. Formulas are decorated with a spatial coordinate, which allows a formulation of formal systems in the original spirit of natural deduction -- only one introduction and one elimination rule per connective, no additional (structural) rule, no explicit reference to the accessibility relation of the intended Kripke models. We give systems for the normal modal logics from K to S4. For the intuitionistic versions of the systems, we define proof reduction, and prove proof normalization, thus obtaining a syntactical proof of consistency. For logics K and K4 we use existence predicates (following Scott) for formulating sound deduction rules.

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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