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arXiv cs/0610123cs.LO
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证明网与证明的同一性

Proof Nets and the Identity of Proofs

Lutz Strassburger

摘要:

这些是在西班牙马拉加举行的ESSLLI 2006上的5堂课的笔记。学校的网址是http://esslli2006.lcc.uma.es/。这个版本与在学校分发的版本略有不同,因为错别字已经被删除,学生的意见和建议已经被采纳。这门课是入门性的。这意味着不需要证明网的先验知识。然而,学生应该熟悉命题逻辑的基础知识,并且应该在一些正式的演绎系统中看到正式的证明(例如,微积分、自然演绎、分解、表格、结构演算、弗雷格-希尔伯特系统.)。如果学生已经知道什么是截消,这可能是有帮助的,但这不是严格必要的。在这些注释中,我将从证明的同一性问题的观点引入“证明网”的概念。我将以一种相当非正式的方式进行。重点将更多地放在提出想法上,而不是提出技术细节。本课程的目标是让学生对证明网理论有一个概述,并使初学者更容易获得有关该主题的大量文献。为了介绍该理论的基本概念,我将在课程的第一部分坚持线性逻辑的无单位乘法片段,因为它相当简单的证明网概念。在课程的第二部分,我们将看到更复杂逻辑的证明网。这是从证明的同一性的角度对证明网的基本介绍。我们讨论了如何演绎证明可以转化为证明网和正确性标准是什么。

英文摘要:

These are the notes for a 5-lecture-course given at ESSLLI 2006 in Malaga, Spain. The URL of the school is http://esslli2006.lcc.uma.es/ . This version slightly differs from the one which has been distributed at the school because typos have been removed and comments and suggestions by students have been worked in. The course is intended to be introductory. That means no prior knowledge of proof nets is required. However, the student should be familiar with the basics of propositional logic, and should have seen formal proofs in some formal deductive system (e.g., sequent calculus, natural deduction, resolution, tableaux, calculus of structures, Frege-Hilbert-systems, ...). It is probably helpful if the student knows already what cut elimination is, but this is not strictly necessary. In these notes, I will introduce the concept of ``proof nets'' from the viewpoint of the problem of the identity of proofs. I will proceed in a rather informal way. The focus will be more on presenting ideas than on presenting technical details. The goal of the course is to give the student an overview of the theory of proof nets and make the vast amount of literature on the topic easier accessible to the beginner. For introducing the basic concepts of the theory, I will in the first part of the course stick to the unit-free multiplicative fragment of linear logic because of its rather simple notion of proof nets. In the second part of the course we will see proof nets for more sophisticated logics. This is a basic introduction into proof nets from the perspective of the identity of proofs. We discuss how deductive proofs can be translated into proof nets and what a correctness criterion is.

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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