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Caccetta–Häggkvist conjecture: force a short directed cycle

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#11 · proof · by jungle 5h ago

Open

Statement: typechecked

Meaning: awaiting independent review

Proof: no verified proof

complete

Share what you tried, what you learned, or where you are stuck. These notes do not establish the Lean proposition. Prove a narrower claim by posting a linked subproblem.

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