Mathematical Sciences: Mean Values and Zeros of Dirichlet Series

数学科学：狄利克雷级数的平均值和零点

• 批准号: 8805800
• 负责人: Steven Gonek
• 金额: $ 3.47万
• 依托单位: University of Rochester
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-07-01 至 1990-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8805800&HistoricalAwards=false
• 关键词: Mathematical; Sciences; Mean; Values; Zeros

The purpose of this research is to investigate a number of open problems concerning the distribution of zeros and the mean values of Dirichlet series. The first problem is to prove asymptotic mean value estimates for Dirichlet polynomials whose lengths are much longer than the interval of integration or, in the case of discrete means, than the range of summation. An immediate application of such results is to the study of gaps between zeros of the Riemann Zeta function. The second problem is to show that certain functions defined by a Dirichlet series have a functional equation like that of the Riemann Zeta function and have infinitely many zeros off the critical line, but still have a positive proportion of their zeros on it. The third problem is to widen the range of application of the pair correlation method and thereby establish (conditional) mean value estimates for the zeta function and arithmetical functions that have so far been unobtainable. Another problem is to obtain asymptotic estimates for fractional moments of the zeta function. The approach envisioned will require some kind of assumption on the vertical distribution of zeros. The final problem is to study the distribution of zeros of the zeta functions attached to function fields.

本研究的目的是研究关于狄里克莱级数的零点分布和平均值的一些公开问题。第一个问题是证明Dirichlet多项式的渐近均值估计，这些Dirichlet多项式的长度远长于积分区间，或者在离散均值的情况下，远长于求和区间。这种结果的一个直接应用是研究Riemann Zeta函数的零点之间的间隙。第二个问题是证明由Dirichlet级数定义的某些函数有一个类似Riemann Zeta函数的函数方程，并且在临界线上有无穷多个零点，但在临界线上仍然有正比例的零点。第三个问题是扩大对相关方法的应用范围，从而建立迄今无法获得的Zeta函数和算术函数的(条件)平均值估计。另一个问题是获得Zeta函数分数阶矩的渐近估计。设想的方法将需要对零的垂直分布进行某种假设。最后一个问题是研究函数域上Zeta函数的零点分布。