Unirationality of hypersurfaces via highly tangent lines

Fuente: arXiv
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Autore principale: Cheng, Raymond
Natura: Preprint
Pubblicazione: 2025
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author Cheng, Raymond
author_facet Cheng, Raymond
contents This article describes a unirationality construction for general low degree complete intersections in projective space which is based on a variety of highly tangent lines. Applied to hypersurfaces, this implies that a general hypersurface of degree $d \geq 6$ in projective $n$-space is unirational as soon as $n \geq 2^{(d-1)2^{d-5}}$, significantly improving classical bounds.
format Preprint
id arxiv_https___arxiv_org_abs_2511_07545
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Unirationality of hypersurfaces via highly tangent lines
Cheng, Raymond
Algebraic Geometry
14M20 (primary) 14J70, 14M10 (secondary)
This article describes a unirationality construction for general low degree complete intersections in projective space which is based on a variety of highly tangent lines. Applied to hypersurfaces, this implies that a general hypersurface of degree $d \geq 6$ in projective $n$-space is unirational as soon as $n \geq 2^{(d-1)2^{d-5}}$, significantly improving classical bounds.
title Unirationality of hypersurfaces via highly tangent lines
topic Algebraic Geometry
14M20 (primary) 14J70, 14M10 (secondary)
url https://arxiv.org/abs/2511.07545