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arXiv 1407.6945math.AGmath.NT
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定义在$C_1$域上的投射环面簇的低次超曲面具有有理点

Low degree hypersurfaces of projective toric varieties defined over a $C_1$ field have a rational point

Robin Guilbot

摘要:

拟代数闭域,或称$C_1$域,是根据一个低次条件定义的。也就是说,域$K$是$C_1$,如果射影空间$\mathbb{P}_K^n$的每一次$d$超曲面只要$d\leq n$就包含一个$K$ -点。在这篇文章中,我们定义了低复曲面度的概念,将这个条件推广到单射影分裂复曲面簇的超曲面。这使我们能够证明Kollár,Lang和Manin的$C_1$猜想的一个特殊情况:任何可以嵌入为$C_1$域上的超曲面的光滑可分离有理连通簇都有一个有理点。我们的结果是基于这样一个事实,即周围的环面品种是森梦空间:他们自然被赋予齐次坐标和他们的最小模型程序的作品在所有情况下。

英文摘要:

Quasi algebraically closed fields, or $C_1$ fields, are defined in terms of a low degree condition. Namely, the field $K$ is $C_1$ if every degree $d$ hypersurface of the projective space $\mathbb{P}_K^n$ contains a $K$-point as soon as $d\leq n$. In this article we define a notion of low toric degree generalizing this condition for hypersurfaces of simplicial projective split toric varieties. This allows us to prove a particular case of the $C_1$ conjecture of Kollár, Lang and Manin : any smooth separably rationally connected variety that can be embedded as such a hypersurface over a $C_1$ field has a rational point. Our results are based on the fact that the ambient toric varieties are Mori Dream Spaces : they are naturally endowed with homogeneous coordinates and their Minimal Model Program works in all cases.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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