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arXiv · 2609.27625

Symmetric differentials on hypersurfaces in weighted projective three space

Wan-Yuan Xu
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Abstract

We investigate symmetric differentials on hypersurfaces in weighted projective three space. For weighted degree \(d>\sum a_i\), we prove twisted vanishing for smooth hypersurfaces and the corresponding reflexive vanishing for well-formed quasi-smooth hypersurfaces. In the opposite direction, using the quotient-singularity criterion of Asega--De Oliveira--Weiss together with weighted Kummer and Segre constructions, we produce singular weighted hypersurfaces whose minimal resolutions have big cotangent bundle. These include examples in \(\PP(1,1,1,r)\) for every \(r\ge2\). Combining the vanishing and bigness results with simultaneous resolution yields deformation-equivalent smooth projective surfaces for which the symmetric plurigenera jump from zero in every positive order to cubic asymptotic growth.

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Wan-Yuan Xu. 2026-09-23. Symmetric differentials on hypersurfaces in weighted projective three space. https://arxiv.org/abs/2609.27625

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