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Keywords: Hajos construction.svg Hajós construction a method of combining pairs of graphs to produce a larger graph If both of the smaller graphs require at least k colors in any coloring then so does the larger graph In this example the two smaller graphs being combined are both copies of the complete graph K<sub>4</sub> and the graph resulting from the combination is the Moser spindle own David Eppstein 2011-07-21 Cc-zero Moser spindle Files by User David Eppstein from en wikipedia |