On the 1-part of the Z_p_l×…X Z_p_s-extension of Q
On the 1-part of the Z_p_l×…X Z_p_s-extension of Q
复制标题
关于 Q 的 Z_p_l×…X Z_p_s-扩展的 1-部分
DOI:
10.1016/j.jnt.2012.09.017
复制
发表时间:
2013
期刊:
影响因子:
--
通讯作者:
T. Morisawa
中科院分区:
文献类型:
--
作者:
S.Mizukami;M.Hosoda;T.Satake;S.Okada;Y.Hori;T.Furuta;K.Kikuchi;Makoto Taniguchi;Satoshi Okada;矢倉 裕奈;岡田智;矢倉 裕奈;Satoshi Okada;矢倉裕奈;Satoshi Okada;武谷浩之;Satoshi Okada;林輝;矢倉裕奈;Satoshi Okada;林輝;矢倉裕奈;林輝;T. Morisawa
Let S be a non-empty finite set of prime numbers and QSthe abelian number field whose Galois group is topologically isomorphic to the direct product of the p-adic integer rings for all p in S. We denote by ΩSthe composite of pn-th cyclotomic fields for all p in S and all positive integers n. Let ℓ be a prime number which is not in S and we define an explicit constant G˜(S,F) which depends only on S and the decomposition field F of ℓ for ΩSover Q. Then ℓ does not divide the class numbers of all intermediate fields of QSwith finite degree over Q if ℓ is greater than G˜(S,F). Our proof refines Horieʼs method.