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We study 2-term tilting complexes of Brauer tree algebras in terms of simplicial complexes. We show the symmetry and convexity of the simplicial complexes as lattice polytopes. Via a geometric interpretation of derived equivalences, we show…

Representation Theory · Mathematics 2020-02-05 Hideto Asashiba , Yuya Mizuno , Ken Nakashima

In this paper all two-term tilting complexes over a Brauer tree algebra with multiplicity one are described using a classification of indecomposable two-term partial tilting complexes obtained earlier in a joint paper with M. Antipov. The…

Representation Theory · Mathematics 2013-11-28 Alexandra Zvonareva

In this paper we describe all indecomposable two-term partial tilting complexes over a Brauer tree algebra with multiplicity 1 using a criterion for a minimal projective presentation of a module to be a partial tilting complex. As an…

Representation Theory · Mathematics 2013-06-13 Mikhail Antipov , Alexandra Zvonareva

Using only the combinatorics of its defining ribbon graph, we classify the two-term tilting complexes, as well as their indecomposable summands, of a Brauer graph algebra. As an application, we determine precisely the class of Brauer graph…

Representation Theory · Mathematics 2018-01-08 Takahide Adachi , Takuma Aihara , Aaron Chan

We explicitly construct two-sided tilting complexes corresponding to Membrillo-Hern\'{a}ndez's tree-to-star tilting complexes for generalized Brauer tree algebras.

Rings and Algebras · Mathematics 2024-05-16 Shuji Fujino , Yuta Kozakai , Kohei Takamura

Brauer graph algebras form a classical class of symmetric algebras with well-structured combinatorial properties and geometric models. Recently, they have been generalized to biserial fractional Brauer graph algebras, which can be regarded…

Representation Theory · Mathematics 2026-05-28 Bohan Xing

Brauer tree algebras are important and fundamental blocks in the modular representation theory of groups. In this research, we present a combination of two main approaches to the tilting theory of Brauer tree algebras. The first approach is…

Representation Theory · Mathematics 2016-08-16 Mary Schaps , Zehavit Zvi

We will present an algebra related to the Coxeter group of type I2n which can be taken as a twisted subalgebra in Brauer algebra of type A_{n-1}. Also we will describe some properties of this algebra.

Representation Theory · Mathematics 2012-07-26 Shoumin Liu

We introduce Brauer complex of symmetric SB-algebra, and reformulate in terms of Brauer complex the so far known invariants of stable and derived equivalence of symmetric SB-algebras. In particular, the genus of Brauer complex turns out to…

Representation Theory · Mathematics 2007-05-23 Mikhail Antipov

For each natural number n greater than 1, we define an algebra satisfying many properties that one might expect to hold for a Brauer algebra of type Cn. The monomials of this algebra correspond to scalar multiples of symmetric Brauer…

Representation Theory · Mathematics 2015-03-17 Arjeh M. Cohen , Shoumin Liu , Shona Yu

We introduce the notion of reflections for selfinjective algebras from the point of view of torsion theories induced by two-term tilting complexes. As an application, we determine the transformations of Brauer trees associated with…

Representation Theory · Mathematics 2015-11-06 Hiroki Abe

In this paper we establish a connection between ribbon graphs and Brauer graphs. As a result, we show that a compact oriented surface with marked points gives rise to a unique Brauer graph algebra up to derived equivalence. In the case of a…

Representation Theory · Mathematics 2020-12-21 Bethany Marsh , Sibylle Schroll

We study the relation between simple-minded systems and two-term tilting complexes for self-injective Nakayama algebras. More precisely, we show that any simple-minded system of a self-injective Nakayama algebra is the image of the set of…

Representation Theory · Mathematics 2014-02-25 Aaron Chan

For each n>0, we define an algebra having many properties that one might expect to hold for a Brauer algebra of type Bn. It is defined by means of a presentation by generators and relations. We show that this algebra is a subalgebra of the…

Representation Theory · Mathematics 2011-12-22 Arjeh M. Cohen , Shoumin Liu

In this paper, we compute the number of two-term tilting complexes for an arbitrary symmetric algebra with radical cube zero over an algebraically closed field. Firstly, we give a complete list of symmetric algebras with radical cube zero…

Representation Theory · Mathematics 2021-10-26 Takahide Adachi , Toshitaka Aoki

We show that trivial extensions of gentle tree algebras are exactly Brauer tree algebras without exceptional vertex. We also give a characterization for the algebras whose trivial extensions are Brauer line/star/cycle algebras. As a…

Representation Theory · Mathematics 2025-03-14 Qi Wang , Yingying Zhang

Generalized Kauer moves are local moves of multiple edges in a Brauer graph that yield derived equivalences between Brauer graph algebras of multiplicity identically 1. Moreover, these derived equivalences are given by a tilting mutation.…

Representation Theory · Mathematics 2024-06-18 Valentine Soto

In this paper the class of Brauer graph algebras is proved to be closed under derived equivalence. For that we use the rank of the maximal torus of the identity component $Out^0(A)$ of the group of outer automorphisms of a symmetric stably…

Representation Theory · Mathematics 2021-11-30 Mikhail Antipov , Alexandra Zvonareva

In this paper we construct non-negative gradings on a basic Brauer tree algebra $A_{\Gamma}$ corresponding to an arbitrary Brauer tree $\Gamma$ of type $(m,e)$. We do this by transferring gradings via derived equivalence from a basic Brauer…

Representation Theory · Mathematics 2010-04-21 Dusko Bogdanic

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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