Trees (1980. Corr. 2nd Printing 2002)Hardcover - 1980. Corr. 2nd Printing 2002, 25 November 2002

The seminal ideas of this book played a key role in the development of group theory since the 70s. Several generations of mathematicians learned geometric ideas in group theory from this book. In it, the author proves the fundamental theorem for the special cases of free groups and tree products before dealing with the proof of the general case. This new edition is ideal for graduate students and researchers in algebra, geometry and topology.