Wyniki wyszukiwania dla: GRAPH COLOURING - MOST Wiedzy


Wyniki wyszukiwania dla: GRAPH COLOURING

Wyniki wyszukiwania dla: GRAPH COLOURING

  • Parity vertex colouring of graphs


    - Discussiones Mathematicae Graph Theory - Rok 2011

    A parity path in a vertex colouring of a graph is a path along which each colour is used an even number of times. Let Xp(G) be the least number of colours in a proper vertex colouring of G having no parity path. It is proved that for any graph G we have the following tight bounds X(G) <= Xp(G) <=|V(G)|− a(G)+1, where X(G) and a(G) are the chromatic number and the independence number of G, respectively. The bounds are improved for...

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  • Dataset of non-isomorphic graphs being coloring types (K5-e,Km-e;n), 2<m<5, 1<n<R(K5-e,Km-e)

    Dane Badawcze
    open access

    For K5-e and Km-e graphs, the type coloring (K5-e,Km-e;n) is such an edge coloring of the full Kn graph, which does not have the K5-e subgraph in the first color (no edge in the graph) or the Km-e subgraph in the second color (exists edge in the graph). Km-e means the full Km graph with one edge removed.The Ramsey number R(K5-e,Km-e) is the smallest...