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Cartesian differential categories are categories equipped with a differential combinator which axiomatizes the directional derivative. Important models of Cartesian differential categories include classical differential calculus of smooth…

Category Theory · Mathematics 2023-06-22 Mario Alvarez-Picallo , Jean-Simon Pacaud Lemay

Cartesian differential categories come equipped with a differential combinator which axiomatizes the fundamental properties of the total derivative from differential calculus. The objective of this paper is to understand when the Kleisli…

Category Theory · Mathematics 2024-02-14 Jean-Simon Pacaud Lemay

Cartesian differential categories come equipped with a differential combinator that formalizes the derivative from multi-variable differential calculus, and also provide the categorical semantics of the differential $\lambda$-calculus. An…

Category Theory · Mathematics 2023-01-24 Sacha Ikonicoff , Jean-Simon Pacaud Lemay

Cartesian difference categories are a recent generalisation of Cartesian differential categories which introduce a notion of "infinitesimal" arrows satisfying an analogue of the Kock-Lawvere axiom, with the axioms of a Cartesian…

Logic in Computer Science · Computer Science 2020-12-01 Mario Alvarez-Picallo , C. -H. Luke Ong

Cartesian differential categories were introduced to provide an abstract axiomatization of categories of differentiable functions. The fundamental example is the category whose objects are Euclidean spaces and whose arrows are smooth maps.…

Category Theory · Mathematics 2014-05-28 Richard Blute , Robin Cockett , Robert Seely

Cartesian differential categories come equipped with a differential combinator that formalizes the directional derivative from multivariable calculus. Cartesian differential categories provide a categorical semantics of the differential…

Logic in Computer Science · Computer Science 2022-11-04 Jean-Simon Pacaud Lemay

The goal of this thesis is threefold: first, to provide a general semantic setting for reasoning about incremental computation. Second, to establish and clarify the connection between derivatives in the incremental sense and derivatives in…

Logic in Computer Science · Computer Science 2020-06-30 Mario Alvarez-Picallo

In this paper, we introduce differential exponential maps in Cartesian differential categories, which generalizes the exponential function $e^x$ from classical differential calculus. A differential exponential map is an endomorphism which…

Category Theory · Mathematics 2020-07-20 Jean-Simon Pacaud Lemay

We revisit the definition of Cartesian differential categories, showing that a slightly more general version is useful for a number of reasons. As one application, we show that these general differential categories are comonadic over…

Category Theory · Mathematics 2015-04-22 G. S. H. Cruttwell

We exhibit the cartesian differential categories of Blute, Cockett and Seely as a particular kind of enriched category. The base for the enrichment is the category of commutative monoids -- or in a straightforward generalisation, the…

Category Theory · Mathematics 2025-08-26 Richard Garner , Jean-Simon Pacaud Lemay

Cai et al. have recently proposed change structures as a semantic framework for incremental computation. We generalise change structures to arbitrary cartesian categories and propose the notion of change action model as a categorical model…

Logic in Computer Science · Computer Science 2020-07-23 Mario Alvarez-Picallo , C. -H. Luke Ong

Differential lambda-categories were introduced by Bucciarelli et al. as models for the simply typed version of the differential lambda-calculus of Ehrhard and Regnier. A differential lambda-category is a cartesian closed differential…

Category Theory · Mathematics 2012-02-28 Oleksandr Manzyuk

The categorified theories known as "doctrines" specify a category equipped with extra structure, analogous to how ordinary theories specify a set with extra structure. We introduce a new framework for doctrines based on double category…

Category Theory · Mathematics 2024-04-09 Michael Lambert , Evan Patterson

Tangent categories are categories equipped with a tangent functor: an endofunctor with certain natural transformations which make it behave like the tangent bundle functor on the category of smooth manifolds. They provide an abstract…

Category Theory · Mathematics 2017-03-10 J. R. B. Cockett , G. S. H. Cruttwell

In 2017, Bauer, Johnson, Osborne, Riehl, and Tebbe (BJORT) showed that the Abelian functor calculus provides an example of a Cartesian differential category. The definition of a Cartesian differential category is based on a differential…

Category Theory · Mathematics 2022-02-21 Robin Cockett , Jean-Simon Pacaud Lemay

Cartesian differential categories come equipped with a differential operator which formalises the total derivative from multivariable calculus. Cofree Cartesian differential categories always exist over a specified base category, where the…

Category Theory · Mathematics 2025-08-13 Jean-Simon Pacaud Lemay

Following the pattern from linear logic, the coKleisli category of a differential category is a Cartesian differential category. What then is the coEilenberg-Moore category of a differential category? The answer is a tangent category! A key…

Category Theory · Mathematics 2019-10-15 Robin Cockett , Jean-Simon Pacaud Lemay , Rory B. B. Lucyshyn-Wright

Cartesian differential categories provide a categorical framework for multivariable differential calculus and also the categorical semantics of the differential $\lambda$-calculus. Taylor series expansion is an important concept for both…

Category Theory · Mathematics 2024-12-18 Jean-Simon Pacaud Lemay

The categorical models of the differential lambda-calculus are additive categories because of the Leibniz rule which requires the summation of two expressions. This means that, as far as the differential lambda-calculus and differential…

Logic in Computer Science · Computer Science 2024-02-14 Thomas Ehrhard

In this paper, we explain how the abstract notion of a differential bundle in a tangent category provides a new way of thinking about the category of modules over a commutative ring and its opposite category. MacAdam previously showed that…

Category Theory · Mathematics 2023-12-19 G. S. H. Cruttwell , Jean-Simon Pacaud Lemay
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