Dessin d'enfant

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In mathematics, a dessin d'enfant (French for a "child's drawing") is a connected graph with a cyclic ordering of edges at each vertex, and each vertex being colored black or white and with no edge having endpoints of the same color.

Dessins d'enfant have important connections to several major areas of mathematics. For example, dessins arise commonly from ramified covers of the Riemann sphere. They were introduced under this name by Alexander Grothendieck.

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