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Convolution and Square in Abelian Groups I
Experimental Mathematics ( IF 0.5 ) Pub Date : 2023-02-28 , DOI: 10.1080/10586458.2023.2174212
Yves Benoist 1
Affiliation  

Abstract

We prove that the functional equation ff(2 t)=λf(t)2, for t in Z/dZ with d odd, admits a nonzero solution f if λ=a+ib with a, b positive integers such that a+b=d and a(d+1)24 mod 4. The proof involves theta functions on elliptic curves with complex multiplication.



中文翻译:

阿贝尔群中的卷积和平方 I

摘要

我们证明函数方程FF(2个 )=λF()2个, 对于tZ/dZd为奇数,承认非零解f如果λ=A+ba , b正整数使得A+b=dA(d+1个)2个4个mod 4. 证明涉及椭圆曲线上具有复数乘法的 theta 函数。

更新日期:2023-03-01
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