The deformation conjecture for Frobenius pushforwards on smooth projective varieties

Let XX be a smooth projective variety with nontrivial first-order deformations, meaning h1(TX)>0h^1(T_X)>0, where TXT_X is the tangent sheaf. The absolute Frobenius pushforward is denoted by FeF_*^e. Deformation conjecture. Then FeOXF_*^e\mathcal O_X is not tilting for any e>0e>0. This conjecture predicts that nontrivial infinitesimal deformations obstruct the tilting property of every Frobenius pushforward of the structure sheaf. The paper discusses this as a generalization of the preceding examples, but provides no proof or resolution.

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Primary source

Devlin Mallory, “The tilting property for F_*^eO_X on Fano surfaces and threefolds”, arXiv:2405.14070 (2025).

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