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We classify simple transitive $2$-representations of certain $2$-sub\-ca\-te\-go\-ri\-es of the $2$-category of Soergel bimodules over the coinvariant algebra in Coxeter types $B_2$ and $I_2(5)$. In the $I_2(5)$ case it turns out that…

Representation Theory · Mathematics 2016-12-30 Marco Mackaay , Volodymyr Mazorchuk

We determine for which Coxeter types the associated small quotient of the $2$-category of Soergel bimodules is finitary and, for such a small quotient, classify the simple transitive $2$-representations (sometimes under the additional…

Representation Theory · Mathematics 2018-10-09 Hankyung Ko , Volodymyr Mazorchuk

In this paper we show that Soergel bimodules for finite Coxeter types have only finitely many equivalence classes of simple transitive $2$-representations and we complete their classification in all types but $H_{3}$ and $H_{4}$.

Representation Theory · Mathematics 2023-08-17 Marco Mackaay , Volodymyr Mazorchuk , Vanessa Miemietz , Daniel Tubbenhauer , Xiaoting Zhang

We prove that every simple transitive $2$-representation of the fiat $2$-category of Soergel bimodules (over the coinvariant algebra) in type $B_2$ is equivalent to a cell $2$-representation. We also describe some general properties of the…

Representation Theory · Mathematics 2016-06-20 Jakob Zimmermann

In this paper we complete the $\mathrm{ADE}$-like classification of simple transitive $2$-representations of Soergel bimodules in finite dihedral type, under the assumption of gradeability. In particular, we use bipartite graphs and zigzag…

Representation Theory · Mathematics 2019-11-11 Marco Mackaay , Daniel Tubbenhauer

In this paper we study simple transitive $2$-representations of certain $2$-subcategories of the $2$-category of projective functors over a star algebra. We show that in the simplest case, which is associated to the Dynkin type $A_2$,…

Representation Theory · Mathematics 2018-05-16 Jakob Zimmermann

The main result of this paper establishes a bijection between the set of equivalence classes of simple transitive $2$-representations with a fixed apex $\mathcal{J}$ of a fiat $2$-category $\cC$ and the set of equivalence classes of…

Representation Theory · Mathematics 2018-02-07 Marco Mackaay , Volodymyr Mazorchuk , Vanessa Miemietz , Xiaoting Zhang

We show that every simple transitive $2$-representation of the $2$-category of projective functors for a certain quotient of the quadratic dual of the preprojective algebra associated with a tree is equivalent to a cell $2$-representation.

Representation Theory · Mathematics 2017-05-04 Jakob Zimmermann

We study the classification problem of simple transitive 2-representations of the 2-category of finite-dimensional bimodules over a radical square zero Nakayama algebra. This results in a complete classification of simple transitive…

Representation Theory · Mathematics 2024-08-28 Helena Jonsson , Mateusz Stroiński

The quantum Satake correspondence relates dihedral Soergel bimodules to the semisimple quotient of the quantum $\mathfrak{sl}_2$ representation category. It also establishes a precise relation between the simple transitive…

Representation Theory · Mathematics 2020-02-04 Marco Mackaay , Volodymyr Mazorchuk , Vanessa Miemietz , Daniel Tubbenhauer

In this article, we define and study the class of simple transitive $2$-representations of finitary $2$-categories. We prove a weak version of the classical Jordan-H\"older Theorem where the weak composition subquotients are given by simple…

Representation Theory · Mathematics 2016-12-30 Volodymyr Mazorchuk , Vanessa Miemietz

We study the problem of classification of simple transitive 2-representations for the (non-finitary) 2-category of bimodules over the dual numbers. We show that simple transitive 2-representations with finitary apex are necessarily of rank…

Representation Theory · Mathematics 2020-05-19 Helena Jonsson

We define locally wide finitary 2-categories by relaxing the definition of finitary 2-categories to allow infinitely many objects and isomorphism classes of 1-morphisms and infinite dimensional hom-spaces of 2-morphisms. After defining…

Category Theory · Mathematics 2021-06-24 James Macpherson

Given a finite dimensional algebra $A$, we consider certain sets of idempotents of $A$, called self-injective cores, to which we associate 2-subcategories of the 2-category of projective bimodules over $A$. We classify the simple transitive…

Representation Theory · Mathematics 2022-05-30 Mateusz Stroiński

In this article, we develop a generalization of finitary birepresentation theory applicable to Soergel bimodules for infinite Coxeter groups. We establish a reduction process for the classification of simple birepresentations of almost…

Representation Theory · Mathematics 2026-04-23 Marco Mackaay , Vanessa Miemietz , Pedro Vaz

We show that any simple transitive $2$-representation of the $2$-ca\-te\-go\-ry of projective endofunctors for the quiver algebra of $\Bbbk(\xymatrix{\bullet\ar[r]&\bullet})$ and for the quiver algebra of…

Representation Theory · Mathematics 2016-01-05 Volodymyr Mazorchuk , Xiaoting Zhang

We classify a class of complex representations of an arbitrary Coxeter group via characters of the integral homology of certain graphs. Such representations can be viewed as a generalization of the geometric representation and correspond to…

Representation Theory · Mathematics 2022-07-05 Hongsheng Hu

Soergel bimodules are certain bimodules over polynomial algebras, associated with Coxeter groups, and introduced by Soergel in the 1990's while studying the category O of complex semisimple Lie algebras. Even though their definition is…

Representation Theory · Mathematics 2017-11-08 Simon Riche

We start with observing that the only connected finite dimensional algebras with finitely many isomorphism classes of indecomposable bimodules are the quotients of the path algebras of uniformly oriented $A_n$-quivers modulo the radical…

Representation Theory · Mathematics 2020-10-21 Volodymyr Mazorchuk , Xiaoting Zhang

Williamson defined the category of singular Soergel bimodules attached to a reflection faithful representation of a Coxeter group. We generalize this construction to more general realizations of Coxeter groups.

Representation Theory · Mathematics 2024-08-26 Noriyuki Abe
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