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7 colour Szilassi polyhedron [message #11042] Tue, 23 March 2010 07:29 UTC
avatar richgain  is currently offline richgain
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Here's an interesting little mathematical curiosity called the Szilassi polyhedron. Topologically, it's a torus, but made from only 7 flat pieces.
Each surface is a different colour and has 6 edges. Every face shares an edge with all 6 other faces, proving that a minimum of 7 colours are necessary when mapping on a torus.

The print is in full-colour sandstone and in spite of its tiny size and low price, has come out remarkably well.
You can find it in the microcubology shop here.
http://www.shapeways.com/modules/udesign/utils/openfile.php?id=87231&f=photos/photo13304.jpg


"a wise man's tools are analogies and puzzles"
Röyksopp - Remind Me

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