Cautis–Logvinenko conjecture for the three-dimensional McKay correspondence

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Let G⊂SL⁡(3,C)G\subset \operatorname{SL}(3,\mathbb{C}) be a finite subgroup, let Y=G-Hilb⁡(C3)Y={G}\operatorname{-Hilb}(\mathbb{C}^3) be the GG-Hilbert scheme, and let

Ψ ⁣:DG(C3)⟶∼D(Y)\Psi\colon D^G(\mathbb{C}^3)\stackrel{\sim}{\longrightarrow}D(Y)

be the inverse of the Bridgeland–King–Reid derived equivalence. For a representation ρ\rho of GG, write O0⊗ρ\mathcal{O}_0\otimes\rho for the GG-equivariant coherent sheaf supported at the origin. Cautis–Logvinenko conjecture. For each nontrivial irreducible representation ρ\rho of GG, the object Ψ(O0⊗ρ)\Psi(\mathcal{O}_0\otimes\rho) is a pure sheaf on YY. More precisely, there is a unique k∈{−1,0}k\in\{-1,0\} depending on ρ\rho such that

Hk(Ψ(O0⊗ρ))≠0.H^k\bigl(\Psi(\mathcal{O}_0\otimes\rho)\bigr)\neq 0.

This predicts a geometric realization of the three-dimensional McKay correspondence through the supports of the images of irreducible representations. The source does not state whether the conjecture has been resolved.

References

Primary source

Alastair Craw and Ryo Yamagishi, “The Cautis-Logvinenko conjecture”, arXiv:2607.25982 (2026).

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