English

On Some Series Involving Harmonic and Skew-Harmonic Numbers

Classical Analysis and ODEs 2025-10-20 v3

Abstract

In this paper, we evaluate in closed form several different series involving the harmonic numbers and skew-harmonic numbers. We consider two classes of series involving these sequences. One class of series involves the product of the nnth harmonic or skew-harmonic number and a tail. We provide the solution to two open problems concerning these harmonic series with tails from Ovidiu Furdui's book Sharpening Mathematical Analysis Skills. The other class of series is the Hardy series, which involves a logarithm and the Euler-Mascheroni constant being subtracted from the nnth harmonic number.

Keywords

Cite

@article{arxiv.2304.11614,
  title  = {On Some Series Involving Harmonic and Skew-Harmonic Numbers},
  author = {Vincent Nguyen},
  journal= {arXiv preprint arXiv:2304.11614},
  year   = {2025}
}