How many colours are needed to colour biplanar graphs?
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Feb 7, 9:29pm: How many colors are needed to colour biplanar graphs? → How many colours are needed to colour biplanar graphs?

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Are you asking for the minimum number of colours for all arbitrary biplane graph, or the minimum number possible for a single biplane graph (which I think would be 2)

@CromlynGames The former.

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