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We extend to general Cartesian categories the idea of Coherent Differentiation recently introduced by Ehrhard in the setting of categorical models of Linear Logic. The first ingredient is a summability structure which induces a partial…

Logic in Computer Science · Computer Science 2023-06-08 Thomas Ehrhard , Aymeric Walch

In this paper we propose unifying the categories of cochain complexes $\text{Ch}(\mathcal{C})$ and modules $\widehat{A}\text{-mod}$ over a repetitive algebra $\widehat{A}$. Motivated by their striking similarities and importance, we…

Representation Theory · Mathematics 2024-03-29 Germán Benitez , Pedro Rizzo

Derivations extend the concept of differentiation from functions to algebraic structures as linear operators satisfying the Leibniz rule. In Lie algebras, derivations form a Lie algebra via the commutator bracket of linear endomorphisms.…

Rings and Algebras · Mathematics 2025-07-17 Alfonso Di Bartolo , Gianmarco La Rosa

We study the homotopy category $\mathsf{K}_{N}(\mathcal{B})$ of $N$-complexes of an additive category $\mathcal{B}$ and the derived category $\mathsf{D}_{N}(\mathcal{A})$ of an abelian category $\mathcal{A}$. First we show that both…

Category Theory · Mathematics 2017-11-22 Osamu Iyama , Kiriko Kato , Jun-ichi Miyachi

In this paper, we introduce the notion of a von Neumann category, as a generalization and categorification of von Neumann algebra. A von Neumann category is a premonoidal category with compatible dagger structure which embeds as a double…

Category Theory · Mathematics 2012-09-04 Richard Blute , Marc Comeau

The central structure in various versions of noncommutative geometry is a differential calculus on an associative algebra. This is an analogue of the calculus of differential forms on a manifold. In this short review we collect examples of…

High Energy Physics - Theory · Physics 2008-02-03 F. M"uller-Hoissen

Let $A$ be an algebra over a commutative ring $k$. It is known that the categories of non-commutative descent data, of comodules over the Sweedler canonical coring, of right $A$-modules with a flat connection are isomorphic as braided…

Quantum Algebra · Mathematics 2012-10-31 A. L. Agore , S. Caenepeel , G. Militaru

We exhibit an adjunction between a category of abstract algebras of partial functions that we call difference-restriction algebras and a category of Hausdorff \'etale spaces. Difference-restriction algebras are those algebras isomorphic to…

Logic · Mathematics 2025-08-06 Célia Borlido , Ganna Kudryavtseva , Brett McLean

Tangent categories provide an axiomatic framework for understanding various tangent bundles and differential operations that occur in differential geometry, algebraic geometry, abstract homotopy theory, and computer science. Previous work…

Category Theory · Mathematics 2018-04-12 G. S. H. Cruttwell , Rory B. B. Lucyshyn-Wright

A tangent category is a category with an endofunctor, called the tangent bundle functor, which is equipped with various natural transformations that capture essential properties of the classical tangent bundle of smooth manifolds. In this…

Category Theory · Mathematics 2025-10-15 Sacha Ikonicoff , Jean-Simon Pacaud Lemay , Tim Van der Linden

Recollements of triangulated categories may be seen as exact sequences of such categories. Iterated recollements of triangulated categories are analogues of geometric or topological stratifications and of composition series of algebraic…

Representation Theory · Mathematics 2012-02-10 Lidia Angeleri Hügel , Steffen Koenig , Qunhua Liu

We show that every sheaf on the site of smooth manifolds with values in a stable (infinity,1)-category (like spectra or chain complexes) gives rise to a differential cohomology diagram and a homotopy formula, which are common features of…

K-Theory and Homology · Mathematics 2013-11-15 Ulrich Bunke , Thomas Nikolaus , Michael Völkl

A method is proposed for defining an arbitrary number of differential calculi over a given noncommutative associative algebra. As an example the generalized quantum plane is studied. It is found that there is a strong correlation, but not a…

q-alg · Mathematics 2009-10-30 Aristophanes Dimakis , J. Madore

Algebraic theories with dependency between sorts form the structural core of Martin-L\"of type theory and similar systems. Their denotational semantics are typically studied using categorical techniques; many different categorical…

Category Theory · Mathematics 2024-12-31 Benedikt Ahrens , Peter LeFanu Lumsdaine , Paige Randall North

The purpose of this paper is to develop a theory of bimonads and Hopf monads on arbitrary categories thus providing the possibility to transfer the essentials of the theory of Hopf algebras in vector spaces to more general settings. There…

Quantum Algebra · Mathematics 2008-06-11 Bachuki Mesablishvili , Robert Wisbauer

Extensivity of a category may be described as a property of coproducts in the category, namely, that they are disjoint and universal. An alternative viewpoint is that it is a property of morphisms in a category. This paper explores this…

Category Theory · Mathematics 2025-02-19 Michael Hoefnagel , Emma Theart

This is the first of a pair of papers where we construct and investigate a closed monoidal structure on the category of generalized algebraic theories (in the sense of Cartmell). In the present text, as a starting point, we define the…

Category Theory · Mathematics 2025-11-18 Daniel Almeida

Coherence in a monoidal category asserts that all morphisms built from structural isomorphisms with a fixed source and target coincide. These structural isomorphisms include, in particular, the associators. Linearly distributive categories…

Combinatorics · Mathematics 2026-05-06 Max Demirdilek , Christian Reiher , Christoph Schweigert

We connect the homotopy type of simplicial moduli spaces of algebraic structures to the cohomology of their deformation complexes. Then we prove that under several assumptions, mapping spaces of algebras over a monad in an appropriate…

Algebraic Topology · Mathematics 2015-07-20 Sinan Yalin

Non-commutative connections of the second type or hom-connections and associated integral forms are studied as generalisations of right connections of Manin. First, it is proven that the existence of hom-connections with respect to the…

Quantum Algebra · Mathematics 2009-01-20 Tomasz Brzezinski , Laiachi El Kaoutit , Christian Lomp