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Drilled Truncated Octahedron

This Demonstration shows a realization of Heawood's seven-color map using a toroid, each face of which is a regular polygon. The colored regions do not consist of a single face.

Contributed by: Izidor Hafner

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[1] L. Szilassi, "On Three Classes of Regular Toroids," Symmetry: Culture and Science, 11(1–4), 2000 pp. 317–335.
[2] B. M. Stewart, Adventures among the Toroids, Okemos, Michigan: B. M. Stewart, rev. 2nd ed., 1980 p. 199.

The Parametrized Szilassi Polyhedron (The Wolfram Demonstrations Project)

Heawood Graph (Wolfram MathWorld)

Torus Coloring (Wolfram MathWorld)

Szilassi Polyhedron (Wolfram MathWorld)

"Drilled Truncated Octahedron" from The Wolfram Demonstrations Project
http://demonstrations.wolfram.com/DrilledTruncatedOctahedron/

Contributed by: Izidor Hafner

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