A noncommutative Weierstrass preparation theorem and applications to Iwasawa theory

A noncommutative Weierstrass preparation theorem and applications to Iwasawa theory
复制标题

DOI:
10.1515/crll.2003.047
复制
发表时间:
2002-04
期刊:
arXiv: Number Theory
影响因子:
--
通讯作者:
O. Venjakob
O. Venjakob
中科院分区:
其他
文献类型:
--
作者:
O. Venjakob

文献摘要

被引文献

相似文献

在这篇论文以及即将与 Y. Hachimori 合作的一篇论文中,我们研究了数域 k 的无限伽罗瓦扩展 K 上的岩泽模,其中伽罗瓦群 G=G(K/k) 同构于 p 进数的两个副本的半直积。在首先分析了相应岩泽代数的一些一般代数性质之后,我们将这些结果应用于 K 上 p-希尔伯特类域的伽罗瓦群。作为主要工具,我们证明了某些斜幂级数环的 Weierstrass 准备定理。我们工作中的一个惊人结果是发现了大量忠实的扭转模块,即全局歼灭子理想为零的非平凡扭转模块。最后我们证明,在 p 元素的有限域中具有系数的完整群代数是 Chatters 意义上的唯一因式分解域。
In this paper and a forthcoming joint one with Y. Hachimori we study Iwasawa modules over an infinite Galois extension K of a number field k whose Galois group G=G(K/k) is isomorphic to the semidirect product of two copies of the p-adic numbers. After first analyzing some general algebraic properties of the corresponding Iwasawa algebra, we apply these results to the Galois group of the p-Hilbert class field over K. As a main tool we prove a Weierstrass preparation theorem for certain skew power series rings. One striking result in our work is the discovery of the abundance of faithful torsion modules, i.e. non-trivial torsion modules whose global annihilator ideal is zero. Finally we show that the completed group algebra with coefficients in the finite field of p elements is a unique factorization domain in the sense of Chatters.