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Results tagged with graph-colorings
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user 53170
Vertex colouring, Edge Colouring, List Colouring, Fractional Chromatic Number and other variants of graph colouring problems are all on topic.
6
votes
Accepted
Conjecture: for perfect graphs the fractional chromatic index rounded up equals the chromati...
A result of Cai and Ellis (see Theorem 5 in http://www.sciencedirect.com/science/article/pii/0166218X9190010T) implies that deciding whether a cubic perfect line-graph is $3$-edge-colorable is NP-comp …
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