Image:Paley9-perfect.svg
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Paley9-perfect.svg (256 × 256 pixel, file size: 2 KB, MIME type: image/svg+xml)
[edit] Summary
The Paley graph of order 9, colored with three colors and showing a clique of three vertices. In this graph and each of its subgraphs the chromatic number equals the clique number, so it is a perfect graph.
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- (del) (cur) 21:46, 4 November 2006 . . David Eppstein (Talk | contribs) . . 256×256 (1,992 bytes) (The Paley graph of order 9, colored with three colors and showing a clique of three vertices. In this graph and each of its subgraphs the chromatic number equals the clique number, so it is a perfect graph.)
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