411 REFERENCE · Wiktionary
Hadwiger-Nelson problem
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
English
Etymology
Named after Hugo Hadwiger and Edward Nelson.
Proper noun
1
en graph theory The problem of determining the minimum number of colors required to color the plane such that no two points at distance 1 from each other have the same color.
Category:English eponyms