Mild pro-p-groups and Galois groups of p-extensions of ℚ

Mild pro-p-groups and Galois groups of p-extensions of ℚ
复制标题

ℚ 的 p 扩展的轻度亲 p 群和伽罗瓦群

DOI:
--
复制
发表时间:
2006
期刊:
影响因子:
--
通讯作者:
J. Labute
J. Labute
中科院分区:
--
文献类型:
--
作者:
J. Labute

文献摘要

被引文献

相似文献

本文引入了一类新的上同调维数为2的拟p-群G,称之为mild群。若d(G),r(G)分别是G的最小生成元数和最小关系数,则我们给出了一个无限族的mild群G,其中r(G)<$d(G)和d(G)<$2是任意的.这些群可以用G/[G,G]有限来构造,回答了Kuzmin的一个问题。若G = GS(p)是有限素数集S和p <$2之外的非分歧的极大p-扩张的Galois群,则证明了G对于一个共终集类S是mild的,即使在p <$S的情况下也是如此.
Abstract In this paper we introduce a new class of finitely presented pro-p-groups G of cohomological dimension 2 called mild groups. If d(G), r(G) are respectively the minimal number of generators and relations of G, we give an infinite family of mild groups G with r(G) ≧ d(G) and d(G) ≧ 2 arbitrary. These groups can be constructed with G/[G, G] finite, answering a question of Kuzmin. If G = G S (p) is the Galois group of the maximal p-extension of ℚ unramified outside a finite set of primes S and p ≠ 2, we show that G is mild for a co-final class of sets S, even in the case p ∉ S.