Kawamata's movable cone conjecture for Calabi–Yau manifolds

Let YY be a Calabi–Yau manifold, and let Mov+(Y)\overline{\mathrm{Mov}}^+(Y) denote the rational hull of its closed movable cone. A pseudo-automorphism of YY is a small modification YYY \dashrightarrow Y, meaning a birational map that is an isomorphism away from a subset of codimension at least 22; write PsAut(Y)\operatorname{PsAut}(Y) for the group of pseudo-automorphisms. Kawamata's movable cone conjecture. The action of PsAut(Y)\operatorname{PsAut}(Y) on Mov+(Y)\overline{\mathrm{Mov}}^+(Y) admits a rational polyhedral fundamental domain. This generalizes the nef cone conjecture by replacing the nef cone with the movable cone, which is invariant under small modifications such as flops. Its status is not specified in the source.

Sources & referencesView supporting material

Primary source

Wendelin Lutz, “The Morrison Cone Conjecture under Deformation”, arXiv:2410.05949 (2025).

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