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arXiv 1105.6004math.RTmath.NT
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关于非分歧U(2,1)的局部新形式

On local newforms for unramified U(2,1)

Michitaka Miyauchi

摘要:

设G是定义在具有奇剩余特征的p-adic域F上的三元非分歧酉群。本文研究了G的不可约容许表示的局部新形式。引入G的一族开紧子群{K_n},将G的表示的局部新形式定义为K_n-固定向量.证明了一般表示的局部新形式的存在性和容许表示的局部新形式的重数为1的性质。

英文摘要:

Let G be the unramified unitary group in three variables defined over a p-adic field F of odd residual characteristic. In this paper, we investigate local newforms for irreducible admissible representations of G. We introduce a family of open compact subgroups {K_n} of G to define the local newforms for representations of G as the K_n-fixed vectors. We prove the existence of local newforms for generic representations and the multiplicity one property of the local newforms for admissible representations.

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