| 9. | K-theory | | | From the atlas of known mathematics. www.math.niu.edu |
| 12. | Higher Dimensional Group Theory | | | An article on how the theory of abstract groups may be generalised to higher dimensions than 1 by Ronald Brown, Bangor. www.bangor.ac.uk |
| 14. | MathWorld | | | Index to articles on Algebraic Topology. mathworld.wolfram.com |
| 15. | Novikov Conjecture Home Page | | | The latest developments concerning the Novikov Conjecture and related problems in topology, geometry, algebra, and analysis. Maintained by Jonathan Rosenberg. www.math.umd.edu |
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