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Independent sets, cliques, and colorings in graphons

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    0494641 - ÚI 2019 US eng V - Research Report
    Hladký, J. - Rocha, Israel
    Independent sets, cliques, and colorings in graphons.
    Cornell University, 2017. 17 s. arXiv.org e-Print archive, arXiv:1712.07367 [math.CO], accepted to European Journal of Combinatorics.
    R&D Projects: GA ČR GJ16-07822Y
    Institutional support: RVO:67985807
    Keywords : Graph limits * Perfect Graphon * Chromatic number * Fractional Chromatic number * clique number * independence number
    OECD category: Pure mathematics
    https://arxiv.org/abs/1712.07367

    We study graphon counterparts of the chromatic and the clique number, the fractional chromatic number, the b-chromatic number, and the fractional clique number. We establish some basic properties of the independence set polytope in the graphon setting, and duality properties between the fractional chromatic number and the fractional clique number. We present a notion of perfect graphons and characterize them in terms of induced densities of odd cycles and its complements.
    Permanent Link: http://hdl.handle.net/11104/0287750

     
     
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