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In previous work we proved that, for categories of free finite-dimensional modules over a commutative semiring, linear compact-closed symmetric monoidal structure is a property, rather than a structure. That is, if there is such a…

Quantum Physics · Physics 2019-01-30 Stefano Gogioso , Dan Marsden , Bob Coecke

The classical deformation theory of Lie algebras involves different kinds of Massey products of cohomology classes. Even the condition of extendibility of an infinitesimal deformation to a formal one-parameter deformation of a Lie algebra…

q-alg · Mathematics 2008-02-03 Dmitry Fuchs , Lynelle Lang

Let $A$ be an algebra in a monoidal category $\Cc$, and let $X$ be an object in $\Cc$. We study $A$-(co)ring structures on the left $A$-module $A\ot X$. These correspond to (co)algebra structures in $EM(\Cc)(A)$, the Eilenberg-Moore…

Rings and Algebras · Mathematics 2017-01-02 D. Bulacu , S. Caenepeel

In a locally $\lambda$-presentable category, with $\lambda$ a regular cardinal, classes of objects that are injective with respect to a family of morphisms whose domains and codomains are $\lambda$-presentable, are known to be characterized…

Category Theory · Mathematics 2020-12-04 Jiri Rosicky , Walter Tholen

The paper is devoted to the study of coarse shape of Cartesian products of topological spaces. If the Cartesian product of two spaces $X$ and $Y$ admits an HPol-expansion, which is the Cartesian product of HPol-expansions of these spaces,…

Algebraic Topology · Mathematics 2015-07-29 Tayyebe Nasri , Behrooz Mashayekhy , Hanieh Mirebrahimi

We present a construction of skew monoidal structures from strong actions. We prove that the existence of a certain adjoint allows one to equip the actegory with a skew monoidal structure and that this adjunction becomes monoidal. This…

Category Theory · Mathematics 2025-10-21 Pavla Procházková

We use the basic expected properties of the Gray tensor product of $(\infty,2)$-categories to study (co)lax natural transformations. Using results of Riehl-Verity and Zaganidis we identify lax transformations between adjunctions and monads…

Category Theory · Mathematics 2021-03-02 Rune Haugseng

Given a 2-category $\twocat{K}$ admitting a calculus of bimodules, and a 2-monad T on it compatible with such calculus, we construct a 2-category $\twocat{L}$ with a 2-monad S on it such that: (1)S has the adjoint-pseudo-algebra property.…

Category Theory · Mathematics 2007-05-23 Claudio Hermida

In this note, we extend results about unique $n^{\textrm{th}}$ roots and cancellation of finite disconnected graphs with respect to the Cartesian, the strong and the direct product, to the rooted hierarchical products, and to a modified…

Combinatorics · Mathematics 2026-01-13 Wilfried Imrich , Igor Klep , Daniel Smertnig

Applied category theory often studies symmetric monoidal categories (SMCs) whose morphisms represent open systems. These structures naturally accommodate complex wiring patterns, leveraging (co)monoidal structures for splitting and merging…

Category Theory · Mathematics 2026-03-11 Marius Furter , Yujun Huang , Gioele Zardini

This paper considers the possible underlying multicategories for a symmetric monoidal category, and shows that, up to canonical and coherent isomorphism, there really is only one. As a result, there is a well-defined forgetful functor from…

Category Theory · Mathematics 2025-08-04 A. D. Elmendorf

The notion of 2--monoidal category used here was introduced by B.~Vallette in 2007 for applications in the operadic context. The starting point for this article was a remark by Yu. Manin that in the category of quadratic algebras (that is,…

Category Theory · Mathematics 2019-03-01 Yuri I. Manin , Bruno Vallette

We introduce the notion of coupled embeddability, defined for maps on products of topological spaces. We use known results for nonsingular biskew and bilinear maps to generate simple examples and nonexamples of coupled embeddings. We study…

Geometric Topology · Mathematics 2021-07-22 Florian Frick , Michael Harrison

In this article smashed products of topological left quasigroups are scrutinized. Quotients of topological fan quasigroups are investigated. Skew smashed products of fan quasigroups and their structure also are studied.

Group Theory · Mathematics 2020-12-15 Sergey V. Ludkowski

This paper is about skew monoidal tensored V-categories (= skew monoidal hommed V-actegories) and their categories of modules. A module over <M,*,R> is an algebra for the monad T = R * _ on M. We study in detail the skew monoidal structure…

Category Theory · Mathematics 2016-08-30 K. Szlachanyi

Using the category of finite sets and injections, we construct a new model for the multilinearization of multifunctors between spaces that appears in the derivatives of Goodwillie calculus. We show that this model yields a lax monoidal…

Algebraic Topology · Mathematics 2018-10-16 Sarah Yeakel

We investigate when a meromorphic connection on a smooth rigid analytic variety $X$ gives rise to a coadmissible $\mathcal{D}_X$-cap-module, and show that this is always the case when the roots of the corresponding $b$-functions are all of…

Algebraic Geometry · Mathematics 2021-05-28 Thomas Bitoun , Andreas Bode

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

Adhesive and quasiadhesive categories provide a general framework for the study of algebraic graph rewriting systems. In a quasiadhesive category any two regular subobjects have a join which is again a regular subobject. Vice versa, if…

Logic in Computer Science · Computer Science 2025-03-12 Davide Castelnovo , Marino Miculan

The category of (colored) props is an enhancement of the category of colored operads, and thus of the category of small categories. The titular category has nice formal properties: it is bicomplete and is a symmetric monoidal category, with…

Category Theory · Mathematics 2017-01-03 Philip Hackney , Marcy Robertson