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arXiv 1105.5482math.NT
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实解析Siegel模形式的Kohnen极限过程

Kohnen's limit process for real-analytic Siegel modular forms

Kathrin Bringmann, Martin Raum, Olav Richter

摘要:

Kohnen介绍了一个限制过程西格尔模形式,生产雅可比形式。他问,如果有一个空间的真正分析西格尔模形式,使斜全纯雅可比形式出现通过这一限制过程。本文主要研究调和斜Maass-Jacobi型和调和Siegel-Maass型。我们改进了Maass关于调和Siegel-Maass形式的傅里叶系数的一个结果,这使我们能够与调和斜Maass-Jacobi形式建立联系.特别是,我们肯定地回答Kohnen的问题。

英文摘要:

Kohnen introduced a limit process for Siegel modular forms that produces Jacobi forms. He asked if there is a space of real-analytic Siegel modular forms such that skew-holomorphic Jacobi forms arise via this limit process. In this paper, we initiate the study of harmonic skew-Maass-Jacobi forms and harmonic Siegel-Maass forms. We improve a result of Maass on the Fourier coefficients of harmonic Siegel-Maass forms, which allows us to establish a connection to harmonic skew-Maass-Jacobi forms. In particular, we answer Kohnen's question in the affirmative.

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