Planar triangulations with real chromatic roots arbitrarily close to four

Details Planar triangulations with real chromatic roots arbitrarily close to four Planar triangulations with real chromatic roots arbitrarily close to four

2005-11-11

arxiv.org/abs/math/0511304v3

Mathematics

Combinatorics

19 pages, uses PGF/TikZ for graphics

Scientific paper

We exhibit infinite families of planar graphs with real chromatic roots
arbitrarily close to 4, thus resolving a long-standing conjecture in the
affirmative.

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