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  4. The incorrect proof of the Dirac's theorem about Hamiltonian graphs on ProofWiki

    The incorrect proof of the Dirac's theorem about Hamiltonian graphs on ProofWiki

    25
  5. Upper bound on chromatic number of graph in terms of number of edges | graph theory | elementary

    Upper bound on chromatic number of graph in terms of number of edges | graph theory | elementary

    28
  6. Fractional colorings and the fractional chromatic number of graphs | graph theory | advanced level

    Fractional colorings and the fractional chromatic number of graphs | graph theory | advanced level

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  7. The chromatic number of a graph and min degrees of its subgraphs | graph theory | intermediate level

    The chromatic number of a graph and min degrees of its subgraphs | graph theory | intermediate level

    17
  9. Proper colorings and the chromatic number of graphs | graph theory | elementary level

    Proper colorings and the chromatic number of graphs | graph theory | elementary level

    32