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File:7-hole and antihole.svg

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English: A seven-vertex odd cycle and its complement, showing in both cases an optimal coloring of the graph and a maximum clique. Since neither of the graphs uses a number of colors equal to its clique size, they are not perfect graphs.
Date
Source Own work
Author David Eppstein

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6 August 2012

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476dc26f6234491ce8841bdf2c1882b4962ec357

4,219 byte

235 pixel

435 pixel

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Date/TimeThumbnailDimensionsUserComment
current00:59, 7 August 2012Thumbnail for version as of 00:59, 7 August 2012435 × 235 (4 KB)David Eppstein

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