Blueprint for a classic proof of the 4 colour theorem
Patrick Labarque (2010)
Visual Mathematics
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Displaying similar documents to “Infinitely many hypermaps of a given type and genus.”
Blueprint for a classic proof of the 4 colour theorem
Sachs triangulations, generated by dessins d'enfant, and regular maps
Heinz-Jürgen Voss (1997)
Mathematica Slovaca
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The isogonal sponges on the cubic lattice.
Gillispie, Steven B., Grünbaum, Branko (2009)
The Electronic Journal of Combinatorics [electronic only]
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On rainbowness of semiregular polyhedra
Stanislav Jendroľ, Štefan Schrötter (2008)
Czechoslovak Mathematical Journal
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We introduce the rainbowness of a polyhedron as the minimum number such that any colouring of vertices of the polyhedron using at least colours involves a face all vertices of which have different colours. We determine the rainbowness of Platonic solids, prisms, antiprisms and ten Archimedean solids. For the remaining three Archimedean solids this parameter is estimated.
Planar maps as labeled mobiles.
Bouttier, J., Di Francesco, P., Guitter, E. (2004)
The Electronic Journal of Combinatorics [electronic only]
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The rectilinear crossing number of is 62.
Brodsky, Alex, Durocher, Stephane, Gethner, Ellen (2001)
The Electronic Journal of Combinatorics [electronic only]
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A census of vertices by generations in regular tessellations of the plane.
Paul, Alice, Pippenger, Nicholas (2011)
The Electronic Journal of Combinatorics [electronic only]
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A large dihedral symmetry of the set of alternating sign matrices.
Wieland, Benjamin (2000)
The Electronic Journal of Combinatorics [electronic only]
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