in a German math forum we tried to color this unit distance graph with 4 colors, but can't do this. If you find a solution with 4 colors please show it.
unit distance graph with 137 vertices
Thanks, Mike
2026-03-25 01:29:22.1774402162
Does this unit distance graph with 137 vertices need five colors?
87 Views Asked by Bumbble Comm https://math.techqa.club/user/bumbble-comm/detail AtRelated Questions in GRAPH-THEORY
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