The braid group and exchange graph conjecture for quivers with superpotential

From papers

Let (Q,W)(Q,W) be a quiver with superpotential of degree NN, and let Γ\Gamma be its associated Ginzburg differential graded algebra. Write CT(Q,W)\operatorname{CT}(Q,W) for the cluster braid group and ST(Q,W)\operatorname{ST}(Q,W) for the spherical twist group, and let EG(Γ)\operatorname{\mathcal{EG}}(\Gamma) and CEGN1(Γ)\operatorname{\mathcal{CEG}}_{N-1}(\Gamma) denote the exchange graphs of hearts and cluster exchange graphs, respectively. General quiver-with-superpotential conjecture. For any quiver with superpotential (Q,W)(Q,W) of degree NN,

CT(Q,W)ST(Q,W)\operatorname{CT}(Q,W)\cong\operatorname{ST}(Q,W)

and EG(Γ)\operatorname{\mathcal{EG}}(\Gamma) is the universal cover of CEGN1(Γ)\operatorname{\mathcal{CEG}}_{N-1}(\Gamma). In the Dynkin and decorated marked surface cases, analogous statements are established by the theorems preceding this conjecture; the general case remains open.

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Sources & referencesView supporting material

Primary source

Yu Qiu, “The braid group for a quiver with superpotential”, arXiv:1712.09585 (2018).

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