{"title":"拧开螺纹消除","authors":"Gabriele Pulcini","doi":"10.1007/s00153-023-00892-4","DOIUrl":null,"url":null,"abstract":"<div><p>We provide a non-Gentzen, though fully syntactical, cut-elimination algorithm for classical propositional logic. The designed procedure is implemented on <span>\\(\\textsf{GS4}\\)</span>, the one-sided version of Kleene’s sequent system <span>\\(\\textsf{G4}\\)</span>. The algorithm here proposed proves to be more ‘dexterous’ than other, more traditional, Gentzen-style techniques as the size of proofs decreases at each step of reduction. As a corollary result, we show that analyticity always guarantees minimality of the size of <span>\\(\\textsf{GS4}\\)</span>-proofs.</p></div>","PeriodicalId":48853,"journal":{"name":"Archive for Mathematical Logic","volume":null,"pages":null},"PeriodicalIF":0.3000,"publicationDate":"2023-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00153-023-00892-4.pdf","citationCount":"0","resultStr":"{\"title\":\"Cut elimination by unthreading\",\"authors\":\"Gabriele Pulcini\",\"doi\":\"10.1007/s00153-023-00892-4\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>We provide a non-Gentzen, though fully syntactical, cut-elimination algorithm for classical propositional logic. The designed procedure is implemented on <span>\\\\(\\\\textsf{GS4}\\\\)</span>, the one-sided version of Kleene’s sequent system <span>\\\\(\\\\textsf{G4}\\\\)</span>. The algorithm here proposed proves to be more ‘dexterous’ than other, more traditional, Gentzen-style techniques as the size of proofs decreases at each step of reduction. As a corollary result, we show that analyticity always guarantees minimality of the size of <span>\\\\(\\\\textsf{GS4}\\\\)</span>-proofs.</p></div>\",\"PeriodicalId\":48853,\"journal\":{\"name\":\"Archive for Mathematical Logic\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.3000,\"publicationDate\":\"2023-09-22\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://link.springer.com/content/pdf/10.1007/s00153-023-00892-4.pdf\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Archive for Mathematical Logic\",\"FirstCategoryId\":\"100\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s00153-023-00892-4\",\"RegionNum\":4,\"RegionCategory\":\"数学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"Arts and Humanities\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Archive for Mathematical Logic","FirstCategoryId":"100","ListUrlMain":"https://link.springer.com/article/10.1007/s00153-023-00892-4","RegionNum":4,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"Arts and Humanities","Score":null,"Total":0}
引用次数: 0
摘要
我们为经典命题逻辑提供了一种非根岑(non-Gentzen)、但完全语法化的剪切消除算法。所设计的程序是在(textsf{GS4}\)上实现的,它是克莱因序列系统(sequent system \(\textsf{G4}\))的单边版本。与其他更传统的根岑式技术相比,这里提出的算法被证明是更 "灵巧 "的,因为证明的大小在每一步缩减中都会减小。作为一个推论结果,我们证明了解析性总是保证了 \(\textsf{GS4}\) 证明的最小化。
We provide a non-Gentzen, though fully syntactical, cut-elimination algorithm for classical propositional logic. The designed procedure is implemented on \(\textsf{GS4}\), the one-sided version of Kleene’s sequent system \(\textsf{G4}\). The algorithm here proposed proves to be more ‘dexterous’ than other, more traditional, Gentzen-style techniques as the size of proofs decreases at each step of reduction. As a corollary result, we show that analyticity always guarantees minimality of the size of \(\textsf{GS4}\)-proofs.
期刊介绍:
The journal publishes research papers and occasionally surveys or expositions on mathematical logic. Contributions are also welcomed from other related areas, such as theoretical computer science or philosophy, as long as the methods of mathematical logic play a significant role. The journal therefore addresses logicians and mathematicians, computer scientists, and philosophers who are interested in the applications of mathematical logic in their own field, as well as its interactions with other areas of research.