English

Fibonacci numbers and Ford circles

Number Theory 2020-03-03 v1

Abstract

An amusing connection between Ford circles, Fibonacci numbers, and golden ratio is shown. Namely, certain tangency points of Ford circles are concyclic and involve Fibonacci numbers. They form four circles that cut the x-axis at points related to the golden ratio.

Cite

@article{arxiv.2003.00852,
  title  = {Fibonacci numbers and Ford circles},
  author = {Jerzy Kocik},
  journal= {arXiv preprint arXiv:2003.00852},
  year   = {2020}
}

Comments

8 pages, 6 figures

R2 v1 2026-06-23T14:00:14.254Z