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This paper expands further on a category theoretical formulation of Hochschild cohomology for monoid objects in monoidal categories enriched over abelian groups, which has been studied in arXiv:1605.00842. This topic was also presented at…

范畴论 · 数学 2022-01-25 Magnus Hellstrøm-Finnsen

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…

范畴论 · 数学 2022-10-04 Najwa Ghannoum , Carlos Simpson

Let $\mathcal{M}$ be an abelian model category (in the sense of Hovey). For a large class of quivers, we describe associated abelian model structures on categories of quiver representations with values in $\mathcal{M}$. This is based on…

环与代数 · 数学 2018-10-31 Georgios Dalezios

We extend the classification results for torsion classes and torsion-free classes in the category of finitely generated modules over a commutative noetherian ring to suitable symmetric monoidal closed noetherian abelian categories. Our main…

表示论 · 数学 2026-04-29 Shunya Saito

A quasi-schemoid is a small category whose morphisms are colored with appropriate combinatorial data. In this note, Mitchell's embedding theorem for a tame schemoid is established. The result allows us to give a cofibrantly generated model…

范畴论 · 数学 2016-02-29 Katsuhiko Kuribayashi , Yasuhiro Momose

We construct model category structures for monoids and modules in symmetric monoidal model categories which satisfy an extra axiom, the monoidal axiom, with applications to symmetric spectra and $\Gamma$-spaces.

代数拓扑 · 数学 2020-01-13 Stefan Schwede , Brooke E. Shipley

We use the theory of Tambara modules to extend and generalize the reconstruction theorem for module categories over a rigid monoidal category to the non-rigid case. We show a biequivalence between the $2$-category of cyclic module…

范畴论 · 数学 2024-08-28 Mateusz Stroiński

We construct an exact tensor functor from the category $\mathcal{A}$ of finite-dimensional graded modules over the quiver Hecke algebra of type $A_\infty$ to the category $\mathscr C_{B^{(1)}_n}$ of finite-dimensional integrable modules…

表示论 · 数学 2017-10-19 Masaki Kashiwara , Myungho Kim , Se-jin Oh

Given a Lie algebroid we discuss the existence of a smooth abelian integration of its abelianization. We show that the obstructions are related to the extended monodromy groups introduced recently in \cite{CFMb}. We also show that this…

微分几何 · 数学 2019-05-31 Ivan Contreras , Rui Loja Fernandes

We construct an embedding G of the category of graphs into the category of abelian groups such that for graphs X and Y we have Hom(GX,GY)=Z[Hom(X,Y)], the free abelian group whose basis is the set Hom(X,Y). The isomorphism is functorial in…

范畴论 · 数学 2014-03-20 Adam J. Przezdziecki

We construct Quillen equivalences between the model categories of monoids (rings), modules and algebras over two Quillen equivalent model categories under certain conditions. This is a continuation of our earlier work where we established…

代数拓扑 · 数学 2014-10-01 Stefan Schwede , Brooke Shipley

The homotopy theory of higher categorical structures has become a relevant part of the machinery of algebraic topology and algebraic K-theory, and this paper contains contributions to the study of the relationship between B\'enabou's…

范畴论 · 数学 2014-04-11 A. M. Cegarra , B. A. Heredia , J. Remedios

We construct a combinatorially defined involution on the algebraic $K$-theory of the ring spectrum associated to a bimonoidal category with anti-involution. Particular examples of such are braided bimonoidal categories. We investigate…

代数拓扑 · 数学 2014-10-01 Birgit Richter

We classify ribbon semisimple monoidal categories with three isomorphism classes of simple objects over the field of complex numbers.

量子代数 · 数学 2007-05-23 Victor Ostrik

In this paper, we develop basic results of algebraic geometry over abelian symmetric monoidal categories. Let $A$ be a commutative monoid object in an abelian symmetric monoidal category $(\mathbf C,\otimes,1)$ satisfying certain conditions…

代数几何 · 数学 2016-01-28 Abhishek Banerjee

A criterion for determining exactly when an order of a maximal subfield of a central simple algebra over a number field can be embedded into an order of this algebra is given. Various previous results have been generalized and recovered by…

数论 · 数学 2025-02-10 Jiaqi Xie , Fei Xu

Generalising a result for Hopf algebras, we not only define the four possible types of Hopf modules in the bialgebroid setting but also yield the notion of two-sided two-cosided Hopf modules, also known as Hopf bimodules or tetramodules, in…

量子代数 · 数学 2025-10-09 Sophie Chemla , Niels Kowalzig

In this note, we study U(n) Soergel bimodules in the context of stable homotopy theory. We define the $(\infty, 1)$-category $\mathrm{SBim}_E(n)$ of $E$-valued U(n) Soergel bimodules, where $E$ is a connective $\mathbb{E}_\infty$-ring…

代数拓扑 · 数学 2024-07-09 Yu Leon Liu

In this paper, we state and prove precise theorems on the classification of the category of (braided) categorical groups and their (braided) monoidal functors, and some applications obtained from the basic studies on monoidal functors…

范畴论 · 数学 2013-01-04 Nguyen Tien Quang , Nguyen Thu Thuy , Pham Thi Cuc

We show that the category of corings over a fixed base ring with local units is equivalent to the category of comonads in (right) unital modules whose underlying functors preserve inductive limits. Changing base rings, we prove a…

环与代数 · 数学 2009-04-27 L. El Kaoutit