Ideas of Space 'Euclidean, Non-Euclidean and Realativistic' 2/Ed.Now in a revised and expanded new edition, this volume chronologically traces the evolution of Euclidean, non Euclidean, and relativistic theories regarding the shape of the universe. A unique, highly readable, and entertaining account, the book assumes no special mathematical knowledge. It reviews the failed classical attempts to prove the parallel postulate and provides coverage of the role of Gauss, Lobachevskii, and Bolyai in setting the