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arXiv 1101.2986math.NT
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2次Siegel模形式的Sturm型定理

Sturm type theorem for Siegel modular forms of degree 2

Toshiyuki Kikuta

摘要:

本文试图将Sturm证明的椭圆模形式的一个同余性质推广到Haupttypus的Siegel的2次水平模形式的同余性质。也就是说,我们给出了确定模形式的同余所需的傅里叶系数的显式界。我们给出了Sturm定理在Jacobi形式下的类比,这是证明中所需要的。在Neumypus of Siegel的模形式具有素水平的情况下,为了证明两个模形式之间的全等性,我们证明了只要检查两个傅里叶系数的全等性就足够了.最后,我们给出了我们的主要定理的两个例子。

英文摘要:

We attempt to generalize a congruence property of elliptic modular forms proved by Sturm to that of Haupttypus of Siegel modular forms of degree 2 with level. Namely, we give an explicit bound of Fourier coefficients required to determine the congruence of modular forms. We give the analog of Sturm's theorem for Jacobi forms, which is required in the proof. In the case that Nebentypus of Siegel modular forms with prime level, in order to prove the congruence between two modular forms, we show that it suffices to check the congruence of the finitely many Fourier coefficients. Finally, we give two examples of our main theorem.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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