Describing a striking connection between topology and algebra, rather than only proving the theorem, this study demonstrates how the result fits into a more general pattern. Throughout the text emphasis is on the interplay between algebra and topology, with graphical interpretation of algebraic operations, and topological structures described algebraically in terms of generators and relations. Includes numerous exercises and examples. "This book is a solid introduction to some important ideas of contemporary interest. Is is very pleasant to read, and its ample collection of exercises includes interesting examples in addition to tests of basic understanding." Lowell Abrams, Mathematical Reviews This 2003 book connects topology and algebra using modern techniques. Numerous exercises and examples, ideal for course use. Used Book in Good Condition