3 papers
math.RT2026
Topological Models for Categories Associated with the Weighted Projective Lines of Type
Jianmin Chen, Li Fan, Yu Qiu +1
We construct a geometric model for the derived category of the weighted projective line of type using a graded sphere with four binaries. More precise…
math.GT2026
Non-asphericity of strata of genus-one differentials and stability spaces
Dawei Chen, Jingyin Huang, Yu Qiu +1
We show that when the number of zeros or poles is at least four, every connected component of the strata of differentials in genus one with prescribed zero and pole orders is not a…
math.RT2025
Dg enhanced orbit categories and applications
Li Fan, Bernhard Keller, Yu Qiu
Our aim in this paper is to prove two results related to the three constructions of cluster categories: as orbit categories, as singularity categories and as cosingularity categori…