M Shulman - arXiv preprint arXiv:1904.07004, 2019 - arxiv.org
We prove the conjecture that any Grothendieck $(\infty, 1) $-topos can be presented by a Quillen model category that interprets homotopy type theory with strict univalent universes …
E Riehl, M Shulman - arXiv preprint arXiv:1705.07442, 2017 - arxiv.org
We propose foundations for a synthetic theory of $(\infty, 1) $-categories within homotopy type theory. We axiomatize a directed interval type, then define higher simplices from it and …
Univalent homotopy type theory (HoTT) may be seen as a language for the category of ∞- groupoids. It is being developed as a new foundation for mathematics and as an internal …
M Shulman - Mathematical Structures in Computer Science, 2018 - cambridge.org
We combine homotopy type theory with axiomatic cohesion, expressing the latter internally with a version of 'adjoint logic'in which the discretization and codiscretization modalities are …
M Shulman - Mathematical Structures in Computer Science, 2015 - cambridge.org
We describe a homotopical version of the relational and gluing models of type theory, and generalize it to inverse diagrams and oplax limits. Our method uses the Reedy homotopy …
I Orton, AM Pitts - Logical Methods in Computer Science, 2018 - lmcs.episciences.org
The homotopical approach to intensional type theory views proofs of equality as paths. We explore what is required of an object I in a topos to give such a path-based model of type …
S Awodey - Mathematical Structures in Computer Science, 2018 - cambridge.org
The notion of a natural model of type theory is defined in terms of that of a representable natural transfomation of presheaves. It is shown that such models agree exactly with the …
Higher inductive types are a class of type-forming rules, introduced to provide basic (and not- so-basic) homotopy-theoretic constructions in a type-theoretic style. They have proven very …
In recent years, we have seen several new models of dependent type theory extended with some form of modal necessity operator, including nominal type theory, guarded and clocked …