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- W66866803 abstract "A mixed hypergraph H = (X;C;D) consists of the vertex set X and two families of subsets: the family C of C-edges and the family D of D-edges. In a coloring, every C-edge has at least two vertices of common color, while every D-edge has at least two vertices of dierent colors. The largest (smallest) number of colors for which a coloring of a mixed hypergraph H using all the colors exists is called the upper (lower) chromatic number and is denoted ¯ ´(H) (´(H)). We consider integer programming models for colorings of mixed hypergraphs in order to show that algorithms for optimal colorings may be transformed and used for finding optimal solutions of the respective integer programming problems." @default.
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- W66866803 date "2000-01-01" @default.
- W66866803 modified "2023-10-16" @default.
- W66866803 title "Integer programming models for colorings of mixed hypergraphs" @default.
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