English

A Human-Checkable Four-Color Theorem Proof

Discrete Mathematics 2019-11-05 v9

Abstract

This paper presents a short and simple proof of the Four-Color Theorem that can be utterly checkable by human mathematicians, without computer assistance. The new key idea that has allowed it and the global structure of the proof are presented in the Introduction.

Cite

@article{arxiv.1708.07442,
  title  = {A Human-Checkable Four-Color Theorem Proof},
  author = {André Luiz Barbosa},
  journal= {arXiv preprint arXiv:1708.07442},
  year   = {2019}
}

Comments

26 pages, 43 figures, 5 tables and 1 new great idea!

R2 v1 2026-06-22T21:22:46.601Z