arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2008.13407math.NT
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Dirichlet $L$ -函数在中心值处的四阶矩

The fourth moment of Dirichlet $L$-functions at the central value

Xiaosheng Wu

摘要:

J. B.在猜想中预言了Dirichlet $L$ -函数在中心值处的四阶矩的渐近公式。Conrey,D. W.作者声明:J. O. Rubinstein和N. C. Snaith,M. 2011年,P. Young这项工作建立了一般模的渐近公式。研究了一种特殊的除数和函数,称为$\mathcal{D}_q$ -函数,它在推导主要项中起着关键作用。另一个关键因素是Kloosterman和中的双和的新界的应用,应用于误差项的估计。

英文摘要:

The asymptotic formula of the fourth moment of Dirichlet $L$-functions at the central value was predicted in a conjecture by J. B. Conrey, D. W. Farmer, J. P. Keating, M. O. Rubinstein, and N. C. Snaith, and the prime moduli case was proved by M. P. Young in 2011. This work establishes this asymptotic formula for general moduli. The work relies on the study of a special divisor sum function, called $\mathcal{D}_q$-function, which plays a key role in deducing the main terms. Another key ingredient is an application of new bounds for double sums in Kloosterman sums, applied in the estimate of the error terms.

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