Friday, March 22, 2013

Straight undip words

The straight-loop word undp in one-step truchet tiles.

A straight undip word is a word in which up-letters and down-letters strictly alternate. The resulting triangle loop is just a straight belt of triangles These words generally correspond to various assemblies of tetrahedra, often connected only at edges. These are in effect mechanisms. Straight words offer a way to encode a robot skeleton in just a few letters.

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