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We show that every braiding on a monoidal bicategory induces a monoidal structure on its bicategory of monoids, such that if the former is sylleptic or symmetric then the latter is braided or symmetric, respectively. This extends a classic…

Category Theory · Mathematics 2026-02-18 Raffael Stenzel

We construct a theory of 2-vector bundles over a Lie groupoid, with fibers modeled by the bicategory of super algebras, bimodules and intertwiners. We demonstrate that these 2-vector bundles form a symmetric monoidal 2-stack. From this…

Algebraic Topology · Mathematics 2026-01-23 Zhen Huan

The Ehresmann-Schein-Nambooripad theorem gives a structure theorem for inverse monoids: they are inductive groupoids. A particularly nice case due to Jarek is that commutative inverse monoids become semilattices of abelian groups. It has…

Category Theory · Mathematics 2019-06-12 Robin Cockett , Chris Heunen

Let $\mathcal{S}$ be a small category, and suppose that we are given a full subcategory $\mathcal{U}$ such that every object of $\mathcal{S}$ can be embedded into some object of $\mathcal{U}$ in the same way as every quasi-projective…

Category Theory · Mathematics 2024-12-12 Luca Terenzi

The notion of pseudocategory, as considered in [11], is extended from the context of a 2-category to the more general one of a sesquicategory, which is considered as a category equipped with a 2-cell structure. Some particular examples of…

Category Theory · Mathematics 2014-11-21 N. Martins-Ferreira

The Hecke algebras for all symmetric groups taken together form a braided monoidal category that controls all quantum link invariants of type A and, by extension, the standard canon of topological quantum field theories in dimension 3 and…

Quantum Algebra · Mathematics 2024-02-07 Yu Leon Liu , Aaron Mazel-Gee , David Reutter , Catharina Stroppel , Paul Wedrich

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 Quillen's paper on rational homotopy theory, the category of 1-reduced simplicial sets is endowed with a family of model structures, the most prominent of which is the one in which the weak equivalences are the rational homotopy…

Algebraic Topology · Mathematics 2026-02-13 Eleftherios Chatzitheodoridis

The long hunt for a symmetric monoidal category of spectra finally ended in success with the simultaneous discovery of the third author's discovery of symmetric spectra and the Elmendorf-Kriz-Mandell-May category of S-modules. In this paper…

Algebraic Topology · Mathematics 2007-05-23 Mark Hovey , Brooke Shipley , Jeff Smith

Over suitable monoidal model categories, we construct a Dwyer-Kan model category structure on the category of algebras over an augmented operadic collection. As examples we obtain Dwyer-Kan model category structure on the categories of…

Algebraic Topology · Mathematics 2016-12-12 Donald Yau

We show that weak monoidal Quillen equivalences induce equivalences of symmetric monoidal $\infty$-categories with respect to the Dwyer-Kan localization of the symmetric monoidal model categories. The result will induce a Dold-Kan…

Algebraic Topology · Mathematics 2021-12-20 Maximilien Péroux

The stable category of modules over the algebra of a finite group with coefficients in a field is a compactly generated tensor triangulated category, that has been studied extensively in representation theory. In this paper, we provide a…

Representation Theory · Mathematics 2025-10-28 Ioannis Emmanouil , Olympia Talelli

We establish a Quillen model category structure on the category of symmetric simplicial multicategories. This model structure extends the model structure on simplicial categories due to J. Bergner.

Category Theory · Mathematics 2012-06-25 Alexandru E. Stanculescu

This article consists of an interesting characterisation of a skew monoidale in the monoidal bicategory $Span$. After discussing the shift or decalage functor on simplicial sets we characterise these skew monoidales as categories $\mathbb…

Category Theory · Mathematics 2016-03-29 Jim Andrianopoulos

The purpose of this note is to show that, if $\mathcal{V}$ is a closed monoidal category, the following three notions are equivalent. (1) Category with $\mathcal{V}$-structure and cylinder. (2) Tensored $\mathcal{V}$-category. (3)…

Category Theory · Mathematics 2014-04-17 Seunghun Lee

We prove that categories enriched in the Thomason model structure admit a model structure that is Quillen equivalent to the Bergner model structure on simplicial categories, providing a new model for (infinity,1)-categories. Along the way,…

Algebraic Topology · Mathematics 2023-11-20 Dmitri Pavlov

We provide examples of inductive fibrant replacements in fibrantly generated model categories constructed as Postnikov towers. These provide new types of arguments to compute homotopy limits in model categories. We provide examples for…

Algebraic Topology · Mathematics 2024-04-09 Maximilien Péroux

In this paper we describe a general framework for constructing examples of locally linear semistrict monoidal 2-categories covering many examples appearing in link homology theory. The main input datum is a closed foam evaluation formula.…

Quantum Algebra · Mathematics 2026-02-12 Leon J. Goertz , Laura Marino , Paul Wedrich

In this work, we establish certain enrichments of dual algebraic structures in the setting of monoidal double categories. In more detail, we obtain a tensored and cotensored enrichment of monads in comonads, as well as a tensored and…

Category Theory · Mathematics 2025-02-04 Vasileios Aravantinos-Sotiropoulos , Christina Vasilakopoulou

The category of small 2-categories has two monoidal structures due to John Gray: one biclosed and one closed. We propose a formalisation of the construction of the right internal and internal homs of these monoidal structures.

Category Theory · Mathematics 2012-03-15 Alexandru E. Stanculescu