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Vertex colouring, Edge Colouring, List Colouring, Fractional Chromatic Number and other variants of graph colouring problems are all on topic.

1 vote
1 answer
1k views

Minimum modifications to make a graph bipartite

Let's say I have a graph that is not bipartite. Let's say it is colored red and black and there are some conflicts where two vertices of the same color share an edge. I can introduce a new vertex betw …