Galois ε-factors modulo roots of unity
Galois ε-factors modulo roots of unity
复制标题
伽罗瓦 ε 因子单位模根
DOI:
10.1007/bf01388718
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发表时间:
1984
影响因子:
3.1
通讯作者:
G. Henniart
中科院分区:
文献类型:
--
作者:
G. Henniart
Let F be a locally compact nonarchimedean (nondiscrete) field, ff a separable algebraic closure of F, W r the Weil group of ffover F (a variant of the Galois group of Fover F), andp the residue characteristic of F. We fix a nontrivial character qJ of the additive group F, and on this group we take the Haar measure dx which is selfdual for~ u.For every continuous finite dimensional complex representation~ of the group WF, Langlands and Deligne have proved the existence of the" local constant of functional equations of L-functions" attached to a, qJ, and dx, also known as the" t-factor" of a (See [De] for background and a proof of existence, and [Ta] for an alternative background account). We shall consider e (o-, u, dx) as a function of the complex parameter s and write simply e (o-) for this function; we write t'(a) for its value at s= 1/2.