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math.RT2026

Lifting -structures through coverings with applications to fractional Brauer graph algebras

Bohan Xing

Under suitable group actions, it is known that -structures descend to orbit categories. We study the converse problem of lifting an -structure to a prescribed c…

math.RT2026

Classification of Brauer graph algebras under stable equivalence of Morita type

Nengqun Li, Pengyun Chen, Yuming Liu +1

The classification of Brauer graph algebras under derived equivalence was recently given by Opper and Zvonareva. In this paper, we prove that two Brauer graph algebras are derived…

math.RT2026

Brauer graph algebras are closed under stable equivalence of Morita type

Pengyun Chen, Nengqun Li, Yuming Liu +1

We study stable equivalences of Brauer graph algebras. In particular, we prove that Brauer graph algebras are closed up to semisimple summands under stable equivalence of Morita ty…

math.RT2026

A classification of derived-discrete graded algebras

Riku Fushimi, Bohan Xing

A finite-dimensional algebra is derived-discrete, in the sense of Vossieck, precisely when it is a piecewise hereditary algebra of Dynkin type or a gentle one-cycle algebra not sat…

math.RT2026

Invariants of derived equivalences for admissible fractional Brauer graph algebras

Bohan Xing

Characterizing derived equivalences between algebras via combinatorial structures has recently become a popular topic. In this paper, we study admissible fractional Brauer graph al…

math.RT2026

Two-term tilting complexes of biserial fractional Brauer graph algebras

Bohan Xing

Brauer graph algebras form a classical class of symmetric algebras with well-structured combinatorial properties and geometric models. Recently, they have been generalized to biser…

math.RA2026

The second Hochschild cohomology and deformations of Brauer graph algebras

Yuming Liu, Zhengfang Wang, Bohan Xing

In this paper, we give an explicit description about the second Hochschild cohomology groups of bipartite Brauer graph algebras with trivial grading. Based on this, we provide geom…