Finite submodules of Iwasawa modules for multi-variable extensions

Finite submodules of Iwasawa modules for multi-variable extensions
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用于多变量扩展的 Iwasawa 模块的有限子模块

DOI:
10.1016/j.jnt.2021.12.003
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发表时间:
2021
影响因子:
0.7
通讯作者:
Kataoka Takenori
Kataoka Takenori
中科院分区:
数学3区
文献类型:
--
作者:
Greither Cornelius;Kataoka Takenori;Kurihara Masato;Kataoka Takenori

文献摘要

相似文献

对于数域的多元扩张,研究了经典Iwasawa模的极大有限子模。我们的主要研究对象是虚二次域的二元扩张的非分歧岩泽模。一方面,我们得到了一种新的方法来证明极大有限子模的某个上界,甚至消失。另一方面,我们得到了一个充分条件的非零,然后构造数值例子,非零保持。
For multi-variable extensions of number fields, we study the maximal finite submodules of classical Iwasawa modules. Our principal objects are the unramified Iwasawa modules for two-variable extensions of imaginary quadratic fields. On the one hand, we obtain a novel way to show a certain upper bound, or even the vanishing, of the maximal finite submodules. On the other hand, we obtain a sufficient condition for the non-vanishing, and then construct numerical examples for which the non-vanishing holds.