books.google.com - We live in a three-dimensional space; what sort of space is it? Can we build it from simple geometric objects? The answers to such questions have been found in the last 30 years, and Outer Circles describes the basic mathematics needed for those answers as well as making clear the grand design of the...http://books.google.com/books/about/Outer_Circles.html?id=w0IYCTiXOm4C&utm_source=gb-gplus-shareOuter Circles
