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arXiv 2602.01571math.NT
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对模形式对称幂的高阶矩

Higher moments for symmetric powers of modular forms

School of Mathematics and Statistics, Qingdao University(青岛大学数学与统计学院)

Jiong Yang, Zhishan Yang

AI总结:

本文研究了模形式对称幂的高阶矩,建立了渐近公式并改进了先前结果。

摘要:

设f为在SL₂(ℤ)上权重为k的cuspidal特征形式,令λ_{Sym^d f}(n)为其d次对称幂提升的归一化傅里叶系数。本文为所有正整数d和l建立了矩∑_{n≤x}λ^l_{Sym^d f}(n)的渐近公式。我们还证明了对于任何正定二元二次型Q的相应求和的渐近公式。我们的结果推广并改进了先前的工作,先前的工作仅限于小d或l的值。证明依赖于ℓ-adic伽罗华表示的分解和相关L函数的分析性质。

英文摘要:

Let $f$ be a cuspidal eigenform of weight $k$ on $\SL_2(\BZ)$ and let $λ_{\Sym^d f}(n)$ be the normalized Fourier coefficients of its $d$-th symmetric power lift. This paper establishes asymptotic formulas for the moments $\sum_{n\leq x}λ^l_{\Sym^d f}(n)$ for all positive integers $d$ and $l$. We also prove an asymptotic formula for the corresponding sum over the values of any positive definite binary quadratic form $Q$. Our results generalize and improve upon previous work, which was limited to small values of $d$ or $l$. The proofs rely on the decomposition of $\ell$-adic Galois representations and the analytic properties of the associated $L$-functions.

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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