Problem

erdos:762

False ↔ ∀ (V : Type u_1) [Fintype V] (G : SimpleGraph V), G.CliqueFree 5 → 4 ≤ G.cochromaticNumber → G.chromaticNumber ≤ G.cochromaticNumber + 2

Open Current State

Declared status: disproved (Lean)
Formalization: formalized
Subjects: graph theorychromatic number
OEIS: N/A
Sources: source:erdos-ai-contributions-wikisource:erdos-problemssource:formal-conjecturessource:jayyhk-erdos-leansource:plby-lean-proofs
Statement: www.erdosproblems.com

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