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arXiv math/0606578math.NT
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水平p^2的Shimura对应与L-级数的中心值

Shimura correspondence for level p^2 and the central values of L-series

Ariel Pacetti, Gonzalo Tornaría

摘要:

给定一个权为2、水平为p^2的模形式f,通过Shimura对应构造了两个水平为4p^2、非平凡特征标映射到f的权为3/2(可能为零)的模形式.然后,我们将构造形式的系数与f的某些虚二次扭曲的L-级数的中心值联系起来。此外,我们给出了一个一般框架,我们的建设,适用于任何顺序在确定的四元数代数,其中一个可以,在原则上,构建重量3/2模形式的任何水平,提供了一个知道如何计算理想类的代表。

英文摘要:

Given a weight 2 and level p^2 modular form f, we construct two weight 3/2 modular forms (possibly zero) of level 4p^2 and non trivial character mapping to f via the Shimura correspondence. Then we relate the coefficients of the constructed forms to the central value of the L-series of certain imaginary quadratic twists of f. Furthermore, we give a general framework for our construction that applies to any order in definite quaternion algebras, with which one can, in principle, construct weight 3/2 modular forms of any level, provided one knows how to compute ideal classes representatives.

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