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arXiv 2011.12089math.NT
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类数为1的正规CM-域

Normal CM-fields with class number one

Tommy Hofmann, Carlo Sircana

摘要:

证明了在广义黎曼假设下,不存在类数为64和96的正规CM-域。这是通过使用Lee-Kwon的判别界限构建正常CM字段的完整表来完成的。这解决了假设GRH的正常CM-域的类数为一的问题。使用相同的技术来解决度为16、32、56和82的相对类数一问题,假设GRH,也解决相应的相对类数一问题。

英文摘要:

We show that assuming the generalized Riemann hypothesis there are no normal CM-fields with class number one of degree 64 and 96. This is done by constructing complete tables of normal CM-fields using discriminant bounds of Lee--Kwon. This solves the class number one problem for normal CM-fields assuming GRH. Using the same technique to solve the relative class number one problem in degrees 16, 32, 56 and 82, also the corresponding relative class number one problem is solved assuming GRH.

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