On the singularities of residual intertwining operators

On the singularities of residual intertwining operators
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关于剩余缠结算子的奇点

DOI:
10.1007/pl00001649
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发表时间:
2000
期刊:
Geometric & Functional Analysis GAFA
影响因子:
--
通讯作者:
W. Müller
W. Müller
中科院分区:
--
文献类型:
--
作者:
W. Müller

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抽象的。设G是定义在上的约化代数群 ${\bbb q}$。设P,P‘是定义在上的G的抛物子群 ${\bbb q}$,并让 $t\in W({\frak a}_{P},{\frak a}_{P‘})$。本文研究了交织算子 $M_{P‘\vert P}(t,\lambda),\,\lambda\在自同构形式的对应空间中作用。其中一个主要结果表明,矩阵系数的每一个 $M_{P‘\vert P}(t,\lambda)$是阶亚纯函数 N+1$,其中n=dim G。利用这一结果,我们进一步研究了一阶交织算子,特别是它们的极点的分布。
Abstract. Let G be a reductive algebraic group defined over $ {\Bbb Q} $. Let P, P' be parabolic subgroups of G, defined over $ {\Bbb Q} $, and let $ t \in W({\frak a}_{P}, {\frak a}_{P'}) $. In this paper we study the intertwining operator $ M_{P' \vert P}(t,\lambda),\,\lambda \in {\frak a}^*_{P,{\Bbb C}} $, acting in corresponding spaces of automorphic forms. One of the main results states that each matrix coefficient of $ M_{P' \vert P}(t,\lambda) $ is a meromorphic function of order $ \le n + 1 $, where n = dim G. Using this result, we further investigate the rank one intertwining operators, in particular, we study the distribution of their poles.