Tag Archives: group theory

Coincidences among small groups

I like to study reflection groups of various kinds.  Let Sn denote the group of permutations of n points, let GL(n, q) denote the general linear group of invertible linear transformations of an n-dimensional vector space over the finite field with … Continue reading

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Coloring Sonobe origami, part 2: symmetric coloring

This is a follow-up to Coloring Sonobe origami, part 1: proper coloring. Symmetric Coloring The most natural first polyhedra to make from the Sonobe unit are, like the octahedron, regular solids. As a result, they have lots of symmetries.  Thus, … Continue reading

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