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dessin d'enfant  

Definición

  • In mathematics, a dessin d'enfant is a type of graph embedding used to study Riemann surfaces and to provide combinatorial invariants for the action of the absolute Galois group of the rational numbers. The name of these embeddings is French for a "child's drawing"; its plural is either dessins d'enfant, "child's drawings", or dessins d'enfants, "children's drawings".
    (Wikipedia, The Free Encyclopedia, https://en.wikipedia.org/wiki/Dessin_d%27enfant)

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http://data.loterre.fr/ark:/67375/PSR-T51FGXT8-W

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