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math.RT2022
Derived equivalences between one-branch extensions of "rectangles"
Qiang Dong, Yanan Lin, Shiquan Ruan
In this paper we investigate the incidence algebras arising from one-branch extensions of "rectangles". There are four different ways to form such extensions, and all four kinds of…
math.RT2021
Equivariant approach to weighted projective curves
Qiang Dong, Shiquan Ruan, Hongxia Zhang
We investigate group actions on the category of coherent sheaves over weighted projective lines. We show that the equivariant category with respect to certain finite group action i…