Estimating Siegel modular forms of genus 2 using Jacobi forms
Estimating Siegel modular forms of genus 2 using Jacobi forms
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使用雅可比形式估计属 2 的 Siegel 模形式
DOI:
10.1215/kjm/1250517682
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发表时间:
2000
影响因子:
--
通讯作者:
Hiroki Aoki
中科院分区:
文献类型:
--
作者:
Hiroki Aoki
We give a new elementary proof of Igusa's theorem on the structure of Siegel modular forms of genus 2. The key point of the proof is the estimation of the dimension of Jacobi forms appearing in the FourierJacobi development of Siegel modular forms. This proves not only Igusa's theorem, but also gives the canonical lifting from Jacobi forms to Siegel modular forms of genus 2. 1 Igusa's theorem On the Siegel upper-half plane of genus g E N lig:= {Z=tZEMg(C) Im(Z)>0}, the symplectic group _AB—tCB Sp9(IlS){M=(CDE SLzs(R)tACtADtCAtBD= =E9,tDB acts by I1-119 Z H M(Z) := (AZ + B)(CZ + D)-1 E ffi[9. For k E 7L, the function F is a Siegel modular form of genus g and weight k, if F satisfies the following conditions: (S1) F : IHIg —> Cis holomorphic. (S2) F(Z) = det(CZ + D)-kF (M(Z)) for any M = (c D) E Spg(Z).
影响因子:
1.7
作者:
J. Igusa
通讯作者:
J. Igusa