Massey products in the \'etale cohomology of number fields

Massey products in the \'etale cohomology of number fields
复制标题

数域 etale 上同调中的梅西积

DOI:
--
复制
发表时间:
2022
期刊:
--
影响因子:
--
通讯作者:
Magnus Carlson
Magnus Carlson
中科院分区:
--
文献类型:
--
作者:
Eric Ahlqvist;Magnus Carlson

文献摘要

参考文献

被引文献

相似文献

给出了数域整数环上的3重Massey积的计算公式,并利用这些公式找到了第一个已知的虚二次域的例子,其中$p$-秩2的类群具有无限$p$-类域塔,其中$p$是奇素数.此外,给出了3重Massey积为零的充要条件,即用$p$-扩张类群表示的充要条件.由此,我们给出了虚二次域类域塔无穷大的一个初等充分条件。我们还反驳了McLeman的$(3,3)$-猜想.最后,我们与消失的Massey产品的存在伽罗瓦表示的G_{\mathbb{Q},S}$实现了一个意想不到的大类群的某些扩展的二次虚数字段。
We give formulas for 3-fold Massey products in the \'etale cohomology of the ring of integers of a number field and use these to find the first known examples of imaginary quadratic fields with class group of $p$-rank two possessing an infinite $p$-class field tower, where $p$ is an odd prime. Furthermore, a necessary and sufficient condition, in terms of class groups of $p$-extensions, for the vanishing of 3-fold Massey products is given. As a consequence, we give an elementary and sufficient condition for the infinitude of class field towers of imaginary quadratic fields. We also disprove McLeman's $(3,3)$-conjecture. Lastly, we relate the vanishing of Massey products to the existence of Galois representations of $G_{\mathbb{Q},S}$ which realize an unexpectedly large class group for certain extensions of a quadratic imaginary number field.
广义 Bockstein 地图和 Massey 产品
DOI: --
发表时间: 2023
期刊: Sigma
影响因子: --
作者:
Lam, Yeuk Hay;Liu, Yuan;Sharifi, Romyar;Wake, Preston;Wang, Jiuya
通讯作者: Wang, Jiuya