On the $\infty$-topos semantics of homotopy type theory

Fuente: arXiv
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Main Author: Riehl, Emily
Format: Preprint
Published: 2022
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author Riehl, Emily
author_facet Riehl, Emily
contents Many introductions to homotopy type theory and the univalence axiom gloss over the semantics of this new formal system in traditional set-based foundations. This expository article, written as lecture notes to accompany a 3-part mini course delivered at the Logic and Higher Structures workshop at CIRM-Luminy, attempts to survey the state of the art, first presenting Voevodsky's simplicial model of univalent foundations and then touring Shulman's vast generalization, which provides an interpretation of homotopy type theory with strict univalent universes in any $\infty$-topos. As we will explain, this achievement was the product of a community effort to abstract and streamline the original arguments as well as develop new lines of reasoning.
format Preprint
id arxiv_https___arxiv_org_abs_2212_06937
institution arXiv
publishDate 2022
record_format arxiv
spellingShingle On the $\infty$-topos semantics of homotopy type theory
Riehl, Emily
Category Theory
Algebraic Topology
Logic
18N60, 18N45, 18N50, 03B38, 55U35
Many introductions to homotopy type theory and the univalence axiom gloss over the semantics of this new formal system in traditional set-based foundations. This expository article, written as lecture notes to accompany a 3-part mini course delivered at the Logic and Higher Structures workshop at CIRM-Luminy, attempts to survey the state of the art, first presenting Voevodsky's simplicial model of univalent foundations and then touring Shulman's vast generalization, which provides an interpretation of homotopy type theory with strict univalent universes in any $\infty$-topos. As we will explain, this achievement was the product of a community effort to abstract and streamline the original arguments as well as develop new lines of reasoning.
title On the $\infty$-topos semantics of homotopy type theory
topic Category Theory
Algebraic Topology
Logic
18N60, 18N45, 18N50, 03B38, 55U35
url https://arxiv.org/abs/2212.06937