The bijection between cluster-tilting objects and d-angulations

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Let (S,M,D)(S,M,D) be a dd-angulation of a marked surface, let (Q,W)(Q,W) be its associated quiver with superpotential, and let Γ\Gamma be the associated dd-dimensional Ginzburg algebra. Define the generalized higher cluster category

CΓ:=per⁡(Γ)/pvd⁡(Γ)\mathscr{C}_{\Gamma}:=\operatorname{per}(\Gamma)/\operatorname{pvd}(\Gamma)

and let π:per⁡(Γ)→CΓ\pi:\operatorname{per}(\Gamma)\to\mathscr{C}_{\Gamma} be the projection functor. Let CC be the set of all (d−2)(d-2)-cluster tilting objects obtained by finite mutations of π(Γ)\pi(\Gamma), and let C′C' be the set of all dd-angulations obtained by finite flips of (S,M,D)(S,M,D). Bijection conjecture. There is a bijection between CC and C′C' which sends π(Γ)\pi(\Gamma) to (S,M,D)(S,M,D). This would identify finite mutations of the cluster-tilting object with finite flips of the associated dd-angulation, extending the geometric model from the initial objects to their mutation and flip classes.

References

Primary source

Bo Le and Bin Zhu, “The quiver with superpotentials of a d-angulation of a marked surface”, arXiv:2501.00435 (2025).

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