English

Recurrence relations for harmonic and derangement numbers

Number Theory 2025-09-15 v1

Abstract

We use elementary methods to establish three key recurrence relations: one for derangement numbers, a second for harmonic numbers, and a third for degenerate harmonic numbers. Our results not only contribute to the understanding of the underlying structure of these numbers but also highlight the effectiveness of elementary techniques in discovering new mathematical properties. The findings have potential applications in various fields where these numbers appear, including combinatorics, probability, and computer science.

Keywords

Cite

@article{arxiv.2509.10404,
  title  = {Recurrence relations for harmonic and derangement numbers},
  author = {Taekyun Kim and Dae san Kim and Jongkyum Kwon and Kyo-Shin Hwang},
  journal= {arXiv preprint arXiv:2509.10404},
  year   = {2025}
}

Comments

7 pages

R2 v1 2026-07-01T05:33:47.509Z