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arXiv 2101.09655cs.LO
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关系类型论(所有证明)

Relational Type Theory (All Proofs)

Aaron Stump, Benjamin Delaware, Christopher Jenkins

摘要:

本文介绍了关系类型论(RelTT),一种新的方法,类型论与外延原则,基于关系语义的类型。该理论的类型构造是系统F加上关系组合、逆和项到关系的应用的提升。一个简洁的可实现性语义,这些类型。本文展示了如何在RelTT的类型论的传统利益的一些建设是可能的,包括基本类型的eta-法律,归纳类型与他们的归纳原则,和积极的递归类型。一个至关重要的作用是由一个名为身份包含的引理,它细化了参数多态性语义中熟悉的身份扩展属性。本文最后给出了RelTT的一个典型系统,为实现RelTT铺平了道路。

英文摘要:

This paper introduces Relational Type Theory (RelTT), a new approach to type theory with extensionality principles, based on a relational semantics for types. The type constructs of the theory are those of System F plus relational composition, converse, and promotion of application of a term to a relation. A concise realizability semantics is presented for these types. The paper shows how a number of constructions of traditional interest in type theory are possible in RelTT, including eta-laws for basic types, inductive types with their induction principles, and positive-recursive types. A crucial role is played by a lemma called Identity Inclusion, which refines the Identity Extension property familiar from the semantics of parametric polymorphism. The paper concludes with a type system for RelTT, paving the way for implementation.

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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