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arXiv 1608.08296math.NT
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Hurwitz数字字段

Hurwitz Number Fields

David P. Roberts

摘要:

从Hurwitz簇到构形簇的正则覆盖映射是代数几何中的重要问题。在有理点之上的概型理论纤维通常是连通的,在这种情况下,它是赫尔维茨数域的谱。我们研究了许多这样的地图和纤维的例子,发现一些领域,其存在与标准的质量守恒。

英文摘要:

The canonical covering maps from Hurwitz varieties to configuration varieties are important in algebraic geometry. The scheme-theoretic fiber above a rational point is commonly connected, in which case it is the spectrum of a Hurwitz number field. We study many examples of such maps and their fibers, finding number fields whose existence contradicts standard mass heuristics.

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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