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Exoo's seven-colour conjecture for the plane with an interval of forbidden distances
Let $\varepsilon>0$ . Consider colorings of the Euclidean plane in which any two points whose distance belongs to $[1-\varepsilon,1+\varepsilon]$ receive different colors. Exoo's co…
Conjectureopenchromatic-number distance-graphs hadwiger-nelson-problemarXiv posted 2 days ago

Exoo's seven-colour conjecture for the plane with an interval of forbidden distances