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arXiv 2207.03250math.NT
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关于无穷多个非线性Euler和

On an infinite number of nonlinear Euler sums

J. Braun, D. Romberger, H. J. Bentz

摘要:

线性调和数和在过去的几个世纪里已经被各种各样的作者研究过,但是关于二次或更高次的非线性欧拉和的结果很少。第一个系统的研究非线性欧拉和组成的产品的超调和和已出版的Flajolet和萨尔维在1997年其次是类似的研究在过去几年中提出的不同作者。虽然这些研究已被限制在其中的提名人组成的产品的偶或奇超调和和,其中的分母是类型$1/k^n$的总和。我们将这些结果推广到具有不同的增元和提名者的非线性欧拉和,这些增元和提名者由偶数和奇数超调和数之间的混合乘积组成。详细地,我们给出了八个可用zeta值表示的二次欧拉和族,以及仅当非线性欧拉和的阶总是偶数时的特殊类型的线性欧拉和族.由此产生的八个不同的家庭的非线性欧拉和,我们发现,包括各种产品之间的偶数和奇数的超调和数,除以三种不同类型的分解器$1/k^n$,$1/((2k-1)^n)$和$1/(k(2k-1))$。计算方案是基于适当的二值整数函数,这使我们能够计算这些序列明确的zeta值和对奇型线性调和数和偶超调和数的二阶。

英文摘要:

Linear harmonic number sums had been studied by a variety of authors during the last centuries, but only few results are known about nonlinear Euler sums of quadratic or even higher degree. The first systematic study on nonlinear Euler sums consisting of products of hyperharmonic sums had been published by Flajolet and Salvy in 1997 followed by similar studies presented during the last years by different authors. Although these studies had been restricted to sums where the nominator consists of a product of even or odd hyperharmonic sums, where the denominator is of the type $1/k^n$. We have generalized these results to nonlinear Euler sums with different denominators and nominators which consist in addition of mixed products between even and odd hyperharmonic numbers. In detail we present eight families of quadratic Euler sums which are expressible by zeta values and special types of linear Euler sums only where the order of the nonlinear Euler sums is always an even number. The resulting eight different families of nonlinear Euler sums which we discovered consist of various products between even and odd hyperharmonic numbers, divided by three different types of denominators $1/k^n$, $1/((2k-1)^n)$ and $1/(k(2k-1))$. The calculational scheme is based on proper two-valued integer functions, which allow us to compute these sequences explicitly in terms of zeta values and pairs of odd-type linear harmonic numbers and even hyperharmonic numbers of second order.

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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