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arXiv 0809.0017math.AGmath.NT
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关于代数基本群的尖截

On cuspidal sections of algebraic fundamental groups

Jakob Stix

摘要:

具有充分非平凡Kummer理论的域上的双曲曲线的边界上的有理点是基本群正合列的大量截面的来源。我们遵循和完善中村的方法对这些边界部分。例如,我们得到了一个弱的anabel定理双曲亏格0曲线在相当一般的领域,包括例如最大的阿贝尔扩张的有理数。

英文摘要:

Rational points in the boundary of a hyperbolic curve over a field with sufficiently nontrivial Kummer theory are the source for an abundance of sections of the fundamental group exact sequence. We follow and refine Nakamura's approach towards these boundary sections. For example, we obtain a weak anabelian theorem for hyperbolic genus 0 curves over quite general fields including for example the maximal abelian extension of the rational numbers.

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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