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arXiv 0704.1707cs.LO
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双直觉逻辑的无割序列演算:扩展版本

A Cut-free Sequent Calculus for Bi-Intuitionistic Logic: Extended Version

Linda Buisman, Rajeev Goré

摘要:

双直觉主义逻辑是直觉主义逻辑的推广,它具有一个与蕴涵有关的联结对偶。双直觉逻辑是由Rauszer作为具有代数和Kripke语义的Hilbert演算引入的。但她随后对BiInt的"无切“演算最近被Uustalu证明是失败的。我们提出了一个新的切割免费的BiInt演算,并证明它的声音和完整的Kripke语义。确保完整性是复杂的含义和它的对偶之间的相互作用,类似于未来和过去的时态逻辑模态。我们的演算处理这种相互作用,使用扩展序列传递信息的前提下的结论,使用实例化的变量在失败的派生树的叶子。我们简单的终止论证允许我们的演算用于自动演绎,尽管这不是它的主要目的。

英文摘要:

Bi-intuitionistic logic is the extension of intuitionistic logic with a connective dual to implication. Bi-intuitionistic logic was introduced by Rauszer as a Hilbert calculus with algebraic and Kripke semantics. But her subsequent ``cut-free'' sequent calculus for BiInt has recently been shown by Uustalu to fail cut-elimination. We present a new cut-free sequent calculus for BiInt, and prove it sound and complete with respect to its Kripke semantics. Ensuring completeness is complicated by the interaction between implication and its dual, similarly to future and past modalities in tense logic. Our calculus handles this interaction using extended sequents which pass information from premises to conclusions using variables instantiated at the leaves of failed derivation trees. Our simple termination argument allows our calculus to be used for automated deduction, although this is not its main purpose.

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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