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We construct a braided structure on the algebra of K\"ahler differential forms of a commutative algebra twisted by an endomorphism. This generalises the construction done in M. Karoubi, Quantum Methods in Algebraic Topology, see…

Algebraic Topology · Mathematics 2007-05-23 Max Karoubi , Mariano Suarez-Alvarez

The category of flows is not cartesian closed. We construct a closed symmetric monoidal structure which has moreover a satisfactory behavior from the computer scientific viewpoint.

Algebraic Topology · Mathematics 2016-09-07 Philippe Gaucher

We prove that for certain monoidal (Quillen) model categories, the category of comonoids therein also admits a model structure.

Category Theory · Mathematics 2010-01-12 Alexandru E. Stanculescu

The disjoint union of mapping class groups of surfaces forms a braided monoidal category $\mathcal M$, as the disjoint union of the braid groups $\mathcal B$ does. We give a concrete, and geometric meaning of the braiding $\beta_{r,s}$ in…

Algebraic Topology · Mathematics 2012-05-09 Yongjin Song

Braided deformations of (symmetric) monoidal categories are related to Vassiliev theory by a direct generalization of well-known results relating "quantum" knot invariants to Vassiliev invariants. The deformation theory of braidings is…

q-alg · Mathematics 2007-05-23 David N. Yetter

We describe a class of examples of braided monoidal categories which are built from Hopf algebras in symmetric categories. The construction is motivated by a calculation in two-dimensional conformal field theory and is tailored to contain…

Quantum Algebra · Mathematics 2013-01-11 Alexei Davydov , Ingo Runkel

In many situations one encounters an entity that resembles a monoid. It consists of a carrier and two operations that resemble a unit and a multiplication, subject to three equations that resemble associativity and left and right unital…

Category Theory · Mathematics 2025-12-05 Paul Blain Levy , Morgan Rogers

The central object studied in this paper is a multiplier bimonoid in a braided monoidal category C. Adapting the philosophy of Janssen and Vercruysse, and making some mild assumptions on the category C, we consider a category M whose…

Category Theory · Mathematics 2019-07-08 Gabriella Böhm , Stephen Lack

We extend the theory of Sweeder's measuring comonoids to the framework of duoidal categories: categories equipped with two compatible monoidal structures. We use one of the tensor products to endow the category of monoids for the other with…

Category Theory · Mathematics 2020-05-05 Ignacio López Franco , Christina Vasilakopoulou

In this paper we will show how to constructed an Skew-Field with trace-preserving endomorphisms of the affine plane. Earlier in my paper, we doing a detailed description of endomorphisms algebra and trace-preserving endomorphisms algebra in…

General Mathematics · Mathematics 2022-08-23 Orgest Zaka

A double category is constructed from a `fattened' version of a given category, motivated in part by a context of parallel transport. We also study monoidal structures on the underlying category and on the fattened category.

Mathematical Physics · Physics 2012-05-17 Saikat Chatterjee , Amitabha Lahiri , Ambar N. Sengupta

We prove that the projective model structure on the category of unbounded cochain complexes extends naturally to the category of contractions. The proof is completely elementary and we do not assume familiarity with model categories.

Algebraic Topology · Mathematics 2017-03-10 Marco Manetti , Chiara Spagnoli

The skew monoidal categories of Szlach\'anyi are a weakening of monoidal categories where the three structural laws of left and right unitality and associativity are not required to be isomorphisms but merely transformations in a particular…

Logic in Computer Science · Computer Science 2021-01-27 Tarmo Uustalu , Niccolò Veltri , Noam Zeilberger

We define a traced pseudomonoid as a pseudomonoid in a monoidal bicategory equipped with extra structure, giving a new characterisation of Cauchy complete traced monoidal categories as algebraic structures in Prof, the monoidal bicategory…

Category Theory · Mathematics 2021-12-30 Nick Hu , Jamie Vicary

Given an additive equational category with a closed symmetric monoidal structure and a potential dualizing object, we find sufficient conditions that the category of topological objects over that category has a good notion of full…

Category Theory · Mathematics 2016-09-15 Michael Barr

In this paper, we classify finite categories with two objects such that one of the endomorphism monoids is a group. We prove that having a group on one side affects the structure of the other endomorphism monoid, and we prove that it is…

Category Theory · Mathematics 2022-10-04 Najwa Ghannoum , Carlos Simpson

A linear Gr-category is a category of finite-dimensional vector spaces graded by a finite group together with natural tensor product. We classify the braided monoidal structures of a class of linear Gr-categories via explicit computations…

Quantum Algebra · Mathematics 2014-05-19 Hua-Lin Huang , Gongxiang Liu , Yu Ye

We study simplicity of Lie skew braces from both global and infinitesimal perspectives. After reviewing the correspondence between connected Lie skew braces, simply transitive affine actions, and post-Lie algebras, we investigate ideals and…

Group Theory · Mathematics 2026-04-27 Marco Damele , Andrea Loi

The structure of monoidal categories in which every arrow is invertible is analyzed in this paper, where we develop a 3-dimensional Schreier-Grothendieck theory of non-abelian factor sets for their classification. In particular, we state…

Category Theory · Mathematics 2012-12-19 María Calvo , Antonio M. Cegarra , Benjamín A. Heredia

The paper begins by giving an algebraic structure on a set of coset representatives for the left action of a subgroup on a group. From this we construct a non-trivially associated tensor category. Also a double construction is given, and…

Quantum Algebra · Mathematics 2009-10-31 E. J. Beggs
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