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arXiv · 2604.09300

Positivity of tangent bundle of weak Del Pezzo surfaces of degree $4$

Qimin Zhang
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Abstract

In this paper, we prove that for any weak Del Pezzo surface $S$ of degree at least $4$, the tangent bundle $T_S$ is almost nef. For the proof, we use total dual VMRTs induced by conic bundle structures.

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Qimin Zhang. 2026-04-10. Positivity of tangent bundle of weak Del Pezzo surfaces of degree $4$. https://arxiv.org/abs/2604.09300

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