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In previous two papers, we defined fractional Brauer configuration algebras and developed their covering theory. In this paper, we study the representation theory of fractional Brauer graph algebras of type MS, a special class of fractional…

Representation Theory · Mathematics 2026-04-24 Nengqun Li , Yuming Liu

In this paper we introduce a generalization of a Brauer graph algebra which we call a Brauer configuration algebra. As with Brauer graphs and Brauer graph algebras, to each Brauer configuration, there is an associated Brauer configuration…

Representation Theory · Mathematics 2017-05-19 Edward L. Green , Sibylle Schroll

By providing equivalent definitions of fractional Brauer configuration algebras in certain special cases, we associate to each monomial algebra some combinatorial data called a fractional Brauer configuration, from which we construct a…

Rings and Algebras · Mathematics 2026-01-29 Yuming Liu , Bohan Xing

In this paper, we develop a covering theory for the fractional Brauer configurations and connect it with the coverings of the associated quivers with relations in the sense of Mart\'inez-Villa and de la Pe\~na. Among the results, we show…

Representation Theory · Mathematics 2026-04-24 Nengqun Li , Yuming Liu

In this work, we introduce a new class of algebras called skew-Brauer graph algebras, which generalize the well-known Brauer graph algebras. We establish that skew-Brauer graph algebras are symmetric and can be defined using a Brauer graph…

Representation Theory · Mathematics 2025-11-24 Ana García Elsener , Victoria Guazzelli , Yadira Valdivieso

We survey results on multiserial algebras, special multiserial algebras and Brauer configuration algebras. A structural property of modules over a special multiserial algebra is presented. Almost gentle algebras are introduced and we…

Representation Theory · Mathematics 2017-03-07 Edward L. Green , Sibylle Schroll

In this paper we study multiserial and special multiserial algebras. These algebras are a natural generalization of biserial and special biserial algebras to algebras of wild representation type. We define a module to be multiserial if its…

Representation Theory · Mathematics 2016-08-08 Edward L. Green , Sibylle Schroll

In this article we calculate two aspects of the representation theory of a Brauer configuration algebra: its Cartan matrix, and the module length of its associated indecomposable projective modules. Then we introduce the concept of…

Representation Theory · Mathematics 2022-08-01 Alex Sierra Cárdenas

For Brauer graph algebras, tilting mutation is compatible with flip of Brauer graphs. The aim of this paper is to generalize this result to the class of Brauer configuration algebras introduced by Green and Schroll recently. More precisely,…

Representation Theory · Mathematics 2024-03-22 Toshitaka Aoki , Yingying Zhang

Characterizing derived equivalences between algebras via combinatorial structures has recently become a popular topic. In this paper, we study admissible fractional Brauer graph algebras, a new subclass of self-injective special biserial…

Representation Theory · Mathematics 2026-04-09 Bohan Xing

We define a new $q$-deformation of Brauer's centralizer algebra which contains Hecke algebras of type $A$ as unital subalgebras. We determine its generic structure as well as the structure of certain semisimple quotients. This is expected…

Quantum Algebra · Mathematics 2012-08-14 Hans Wenzl

We introduce the marked Brauer algebra and the marked Brauer category. These generalize the analogous constructions for the ordinary Brauer algebra to the setting of a homogeneous bilinear form on a $\mathbb{Z}_2$-graded vector space. We…

Representation Theory · Mathematics 2017-11-29 Jonathan R. Kujawa , Benjiman C. Tharp

In this paper, we determine the structure and representation theory of the Brauer algebra associated to a complex reflection group (here called the Brauer-Chen algebra), defined by Chen in 2011. We prove that it is semisimple and provide a…

Representation Theory · Mathematics 2024-04-25 Ilias Andreou

Bijections between invariants associated to indecomposable projective modules over some suitable Brauer configuration algebras and invariants associated to solutions of the Kronecker problem and the four subspace problem are used to…

A new class of associative algebras referred to as affine walled Brauer algebras are introduced. These algebras are free with infinite rank over a commutative ring containing 1. Then level two walled Brauer algebras over C are defined,…

Representation Theory · Mathematics 2013-05-03 Hebing Rui , Yucai Su

The numerical invariants (global) cohomological length, (global) cohomological width, and (global) cohomological range of complexes (algebras) are introduced. Cohomological range leads to the concepts of derived bounded algebras and…

Representation Theory · Mathematics 2017-05-17 Chao Zhang , Yang Han

We present a unified apoach to the study of separable and Frobenius algebras. The crucial observation is thsat both cases are related to the nonlinear equation $R^{12}R^{23}=R^{23}R^{13}=R^{13}R^{12}$, called the FS-equation. Given a…

Quantum Algebra · Mathematics 2009-09-25 S. Caenepeel , B. Ion , G. Militaru

In the present paper by Frobenius algebra Y we mean a finite dimensional algebra possessing an associative and invertible (nondegenerate) form a scalar product, referred to as the Frobenius structure. The nondegenerate form has an inverse.…

Rings and Algebras · Mathematics 2011-03-29 Zbigniew Oziewicz , Gregory Peter Wene

We introduce two classes of algebras coming from partial triangulations of marked surfaces. The first one, called frozen algebra of a partial triangulation, is generally of infinite rank and contains frozen Jacobian algebras of…

Representation Theory · Mathematics 2016-07-20 Laurent Demonet

We initiate the representation theory of the degenerate affine periplectic Brauer algebra on $n$ strands by constructing its finite-dimensional calibrated representations when $n=2$. We show that any such representation that is…

Representation Theory · Mathematics 2019-05-14 Zajj Daugherty , Iva Halacheva , Mee Seong Im , Emily Norton
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