Positivity of tangent bundle of weak Del Pezzo surfaces of degree $4$
Fuente:
arXiv
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| Autore principale: | |
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| Natura: | Preprint |
| Pubblicazione: |
2026
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| Accesso online: | |
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| _version_ | 1866914463943229440 |
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| author | Zhang, Qimin |
| author_facet | Zhang, Qimin |
| contents | 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_09300 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Positivity of tangent bundle of weak Del Pezzo surfaces of degree $4$ Zhang, Qimin Algebraic Geometry 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. |
| title | Positivity of tangent bundle of weak Del Pezzo surfaces of degree $4$ |
| topic | Algebraic Geometry |
| url | https://arxiv.org/abs/2604.09300 |