A Synthetic Perspective on -Category Theory: Fibrational and Semantic Aspects

J Weinberger - arXiv preprint arXiv:2202.13132, 2022 - arxiv.org
Reasoning about weak higher categorical structures constitutes a challenging task, even to
the experts. One principal reason is that the language of set theory is not invariant under the …

Syntax and models of Cartesian cubical type theory

C Angiuli, G Brunerie, T Coquand, R Harper… - … Structures in Computer …, 2021 - cambridge.org
We present a cubical type theory based on the Cartesian cube category (faces,
degeneracies, symmetries, diagonals, but no connections or reversal) with univalent …

Internal parametricity for cubical type theory

E Cavallo, R Harper - Logical Methods in Computer Science, 2021 - lmcs.episciences.org
We define a computational type theory combining the contentful equality structure of
cartesian cubical type theory with internal parametricity primitives. The combined theory …

Two-sided cartesian fibrations of synthetic -categories

J Weinberger - Journal of Homotopy and Related Structures, 2024 - Springer
Within the framework of Riehl–Shulman's synthetic (∞, 1)-category theory, we present a
theory of two-sided cartesian fibrations. Central results are several characterizations of the …

Internal sums for synthetic fibered (∞, 1)-categories

J Weinberger - Journal of Pure and Applied Algebra, 2024 - Elsevier
We give structural results about bifibrations of (internal)(∞, 1)-categories with internal sums.
This includes a higher version of Moens' Theorem, characterizing cartesian bifibrations with …

[PDF][PDF] A Formal Logic for Formal Category Theory.

MS New, DR Licata - FoSSaCS, 2023 - library.oapen.org
We present a domain-specific type theory for constructions and proofs in category theory.
The type theory axiomatizes notions of category, functor, profunctor and a generalized form …

Synthetic fibered -category theory

U Buchholtz, J Weinberger - arXiv preprint arXiv:2105.01724, 2021 - arxiv.org
arXiv:2105.01724v6 [math.CT] 12 Aug 2022 Page 1 Synthetic fibered (∞,1)-category theory Ulrik
Buchholtza and Jonathan Weinbergerb aFunctional Programming Lab, School of Computer …

[PDF][PDF] Syntax and semantics of modal type theory

D Gratzer - 2023 - pure.au.dk
One idiosyncratic framing of type theory is as the study of operations invariant under
substitution. Modal type theory, by contrast, concerns the controlled integration of operations …

Formalizing the∞-Categorical Yoneda Lemma

N Kudasov, E Riehl, J Weinberger - Proceedings of the 13th ACM …, 2024 - dl.acm.org
Formalized 1-category theory forms a core component of various libraries of mathematical
proofs. However, more sophisticated results in fields from algebraic topology to theoretical …

Strict stability of extension types

J Weinberger - arXiv preprint arXiv:2203.07194, 2022 - arxiv.org
We show that the extension types occurring in Riehl--Shulman's work on synthetic $(\infty, 1)
$-categories can be interpreted in the intended semantics in a way so that they are strictly …