Start with a single shape. Repeat it in some way—translation,
reflection over a line, rotation around a point—and you have
Symmetry is a fundamental phenomenon in art, science, and nature
that has been captured, described, and analyzed using
mathematical concepts for a long time. Inspired by the geometric
intuition of Bill Thurston and empowered by his own analytical
skills, John Conway, with his coauthors, has... more...