若干大次数域的$2$-类群

IF 0.5 Q3 MATHEMATICS
M. M. Chems-Eddin, A. Azizi, A. Zekhnini
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引用次数: 9

摘要

设$d$为无奇平方整数$m\geq 3$, $k$: $=\mathbb{Q}(\sqrt{d}, \sqrt{-1})$, $\mathbb{Q}(\sqrt{-2}, \sqrt{d})$或$\mathbb{Q}(\sqrt{-2}, \sqrt{-d})$, $L_{m,d}:=\mathbb{Q}(\zeta_{2^m},\sqrt{d})$。在本文中,我们将确定所有字段$L_{m, d}:=\mathbb{Q}(\zeta_{2^m},\sqrt{d})$,其中$m\geq 3$为整数,使得$L_{m, d}$的类数为奇数。此外,使用$k$的分环$\mathbb{Z}_2$ -扩展,我们计算$L_{m, d}$的$2$ -类群的秩,当$d$的除数是相同的$3$或$5\pmod 8$时。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
On the $2$-class group of some number fields with large degree
Let $d$ be an odd square-free integer, $m\geq 3$, $k$:$=\mathbb{Q}(\sqrt{d}, \sqrt{-1})$, $\mathbb{Q}(\sqrt{-2}, \sqrt{d})$ or $\mathbb{Q}(\sqrt{-2}, \sqrt{-d})$, and $L_{m,d}:=\mathbb{Q}(\zeta_{2^m},\sqrt{d})$. In this paper, we shall determine all the fields $L_{m, d}:=\mathbb{Q}(\zeta_{2^m},\sqrt{d})$, with $m\geq 3$ is an integer, such that the class number of $L_{m, d}$ is odd. Furthermore, using the cyclotomic $\mathbb{Z}_2$-extensions of $k$, we compute the rank of the $2$-class group of $L_{m, d}$ whenever the divisors of $d$ are congruent $3$ or $5\pmod 8$.
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来源期刊
Archivum Mathematicum
Archivum Mathematicum MATHEMATICS-
CiteScore
0.70
自引率
16.70%
发文量
0
审稿时长
35 weeks
期刊介绍: Archivum Mathematicum is a mathematical journal which publishes exclusively scientific mathematical papers. The journal, founded in 1965, is published by the Department of Mathematics and Statistics of the Faculty of Science of Masaryk University. A review of each published paper appears in Mathematical Reviews and also in Zentralblatt für Mathematik. The journal is indexed by Scopus.
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