Constructive sheaf models of type theory

Constructive sheaf models of type theory
复制标题

类型论的构造层模型

DOI:
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发表时间:
2019
影响因子:
0.5
通讯作者:
Christian Sattler
Christian Sattler
中科院分区:
计算机科学4区
文献类型:
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作者:
T. Coquand;Fabian Ruch;Christian Sattler

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摘要我们提供了一价类型论的层模型概念的一个建设性版本。我们首先将现有的一元类型理论的构造模型相对化,使之在一个基本范畴之上。然后,基范畴的任何Grothendieck拓扑都会产生一组左精确模态,我们通过将presheaf模型对这组左精确模态进行局部化来恢复类型论模型。我们提供了一些例子。
Abstract We provide a constructive version of the notion of sheaf models of univalent type theory. We start by relativizing existing constructive models of univalent type theory to presheaves over a base category. Any Grothendieck topology of the base category then gives rise to a family of left-exact modalities, and we recover a model of type theory by localizing the presheaf model with respect to this family of left-exact modalities. We provide then some examples.