There are integral heptagons, no three points on a line, no four on a circle
Tobias KreiselSascha Kurz
所有作者
Tobias KreiselSascha Kurz
文献摘要
We give two configurations of seven points in the plane, no three points in a
line, no four points on a circle with pairwise integral distances. This answers
a famous question of Paul Erd\H{o}s.