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arXiv 1303.4079math.AG
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非代数闭域上的Nori基本群

Nori's Fundamental Group over a non Algebraically Closed Field

Lei Zhang

摘要:

本文将Nori关于基本群概型的定义从有理点推广到任意基点,使得当$X$为域$k$,点为$k\subseteq \bar{k}$时,仍得到类似于绝对伽罗瓦群${\rm Gal}(\bar{k}/k)$的非平凡群概型.然后,我们试图在不同的层次上理解组方案。

英文摘要:

In this note we generalize Nori's definition of the fundamental group scheme from a rational point to an arbitrary base point so that when we take $X$ to be a field $k$ and the point to be $k\subseteq \bar{k}$ we still get a non trivial group scheme which is similar to the absolute Galois group ${\rm Gal}(\bar{k}/k)$. Then we try to understand the group scheme at various levels.

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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