On equations $\sigma(n)=\sigma(n+k)$ and $\varphi(n)=\varphi(n+k)$
Number Theory
2018-10-18 v2
Abstract
We study the distribution of solutions of equations and . We give new upper bounds for these solutions.
Keywords
Cite
@article{arxiv.1001.2511,
title = {On equations $\sigma(n)=\sigma(n+k)$ and $\varphi(n)=\varphi(n+k)$},
author = {Tomohiro Yamada},
journal= {arXiv preprint arXiv:1001.2511},
year = {2018}
}
Comments
9 pages, the author's final version