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arXiv 1107.0573math.NT
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伪周期函数、倍半调和Maass型和L函数的非临界值

Mock period functions, sesquiharmonic Maass forms, and non-critical values of L-functions

Kathrin Bringmann, Nikolaos Diamantis, Martin Raum

摘要:

我们引入了一种新的1-上同调的完备化方法,它与模拟模形式理论中的相应方法是平行的。这种技巧被应用于GL(2,Q)尖点形式的L函数的非临界值的情形。我们证明了一系列的非临界值可以被解释为一个模拟的周期函数,我们定义在类比与周期多项式。此外,我们证明了非临界值可以编码成倍半谐波马斯形式。最后,我们制定并证明了一个Eichler-Shimura型同构的模拟周期函数的空间。

英文摘要:

We introduce a new technique of completion for 1-cohomology which parallels the corresponding technique in the theory of mock modular forms. This technique is applied in the context of non-critical values of L-functions of GL(2,Q) cusp forms. We prove that a generating series of non-critical values can be interpreted as a mock period function we define in analogy with period polynomials. Further, we prove that non-critical values can be encoded into a sesquiharmonic Maass form. Finally, we formulate and prove an Eichler-Shimura-type isomorphism for the space of mock period functions.

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