Canonical-map perfectoidness conjecture for Albanese towers
Canonical-map perfectoidness conjecture for Albanese towers
Let be a smooth proper connected variety of pure dimension with globally generated -forms, and fix a point . Let
be a closed subgroup. The canonical map sends a point of to the -dimensional subspace spanned by the image of the differential of the Albanese morphism. Canonical-map perfectoidness conjecture. The restriction is perfectoid, where is the preimage under the canonical map
of the open set of -dimensional subspaces of that intersect trivially in . Moreover, no open perfectoid subdiamond of has non-empty intersection with the restriction of to the complementary closed subvariety of . The conjecture predicts that the canonical map exactly identifies the locus on which the Albanese tower is perfectoid, while ruling out any open perfectoid locus over the complementary closed subvariety. The source gives no evidence of resolution.
Sources & referencesView supporting material
Primary source
Rebecca Bellovin, Hanlin Cai, Sean Howe and Tongmu He, “Characterizing perfectoid covers of abelian varieties”, arXiv:2501.03974 (2025).
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