SimpleGraph.Colorable.chromaticNumber_pos

∀ {V : Type u} {G : SimpleGraph V} [Nonempty V] {n : ℕ}, G.Colorable n → 0 < G.chromaticNumber

Defined in: Mathlib.Combinatorics.SimpleGraph.Coloring.Vertex
Cited by: 2 results in Mathlib
Foundations: Depth 67 from the axioms · uses propext, Classical.choice, Quot.sound
Assumes: Nonempty

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