The Symmetries of Things by John H. Conway, Heidi Burgiel and Chaim Goodman-Strauss

CTYPE html PUBLIC “-//W3C//DTD HTML 4.0 Transitional//EN” “http://www.w3.org/TR/REC-html40/loose.dtd”> Normal 0 false false false MicrosoftInternetExplorer4 Three mathematicians illustrate their theory for describing and classifying symmetries.