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arxiv: 1212.3093 · v1 · pith:MDXRWLARnew · submitted 2012-12-13 · 🧮 math.CO · cs.DM· math.LO

Hadwiger's conjecture for graphs with infinite chromatic number

classification 🧮 math.CO cs.DMmath.LO
keywords omegaconjecturegraphgraphshadwigerinfinitenumberchromatic
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We construct a connected graph H such that (1) \chi(H) = \omega; (2) K_\omega, the complete graph on \omega points, is not a minor of H. Therefore Hadwiger's conjecture does not hold for graphs with infinite coloring number.

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