Free book “Basic 3-Manifold Topology” by Allen Hatcher can be downloaded in pdf and postscript formats. The three chapters here are to a certain extent independent of each other.
Book Description
The main exceptions are that the beginning of Chapter 1 is a prerequisite for almost everything else, while some of the later parts of Chapter 1 are used in Chapter 2. These notes, originally written in the 1980’s, were intended as the beginning of a book on 3 manifolds, but unfortunately that project has not progressed very far since then. A few small revisions have been made in 1999 and 2000, but much more remains to be done, both in improving the existing sections and in adding more topics.
Table of Contents
- Canonical Decomposition
- Special Classes of 3-Manifolds
- Homotopy Properties