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YouTube Videos – Graph coloring and Related Articles

All non-isomorphic graphs on 3 vertices and their chromatic polynomials. The empty graph E3 (red) admits a 1-coloring, the others admit no such colorings. The green graph admits 12 colorings with 3 colors.

A proper vertex coloring of the Petersen graph with 3 colors, the minimum number possible.

This graph can be 3-colored in 12 different ways.

Image: 3 coloring Ex