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Evaluating Six Ap\'ery-like Series of Weight $5$

Combinatorics 2025-10-20 v1 Number Theory

Abstract

The main objective of this paper is to evaluate six new Ap\'ery-like series of weight 55 in closed form. These series involve harmonic numbers and exhibit the characteristic reciprocal central binomial coefficient structure. Generating functions for the inverse sine and identities related to harmonic numbers are used to link each series to a variety of integrals containing ln(sin(x))\ln \left(\sin \left(x\right)\right) and ln(cos(x))\ln \left(\cos \left(x\right)\right), which are evaluated using a range of methods and identities.

Keywords

Cite

@article{arxiv.2510.15008,
  title  = {Evaluating Six Ap\'ery-like Series of Weight $5$},
  author = {Jorge Antonio González Layja},
  journal= {arXiv preprint arXiv:2510.15008},
  year   = {2025}
}