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arXiv math/0504065math.LOmath.CT
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逻辑没有逻辑

Logic Without Syntax

Dominic Hughes

摘要:

本文提出了一个抽象的,数学公式的经典命题逻辑。它一层一层地进行:(1)抽象的、无语法的命题;(2)抽象的、无语法的收缩弱化证明;(3)分布;(4)公理(p或非p)。抽象命题对应于范畴G(Rel^L)的对象,其中G是Hyland-Tan双胶合构造,Rel是集合和关系的标准集范畴,L是文字的集合。抽象证明是Gl(Rel^L)的一个紧正交子范畴的态射,其中我们定义Gl为G的一个松弛变体。证明了L上的自由二元积和范畴(收缩弱化逻辑)是Gl(Rel^L)的一个满子范畴,自由分配格范畴(收缩弱化分配逻辑)是Gl(Rel^L)的一个满子范畴.我们探讨一般的结构,增加公理,这是不是雷尔特定的或(p或不p)特定的。

英文摘要:

This paper presents an abstract, mathematical formulation of classical propositional logic. It proceeds layer by layer: (1) abstract, syntax-free propositions; (2) abstract, syntax-free contraction-weakening proofs; (3) distribution; (4) axioms (p OR NOT p). Abstract propositions correspond to objects of the category G(Rel^L) where G is the Hyland-Tan double glueing construction, Rel is the standard category of sets and relations, and L is a set of literals. Abstract proofs are morphisms of a tight orthogonality subcategory of Gl(Rel^L), where we define Gl as a lax variant of G. We prove that the free binary product-sum category (contraction-weakening logic) over L is a full subcategory of Gl(Rel^L), and the free distributive lattice category (contraction-weakening-distribution logic) is a full subcategory of Gl(Rel^L). We explore general constructions for adding axioms, which are not Rel-specific or (p OR NOT p)-specific.

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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