Talk:Obstruction classes and Pontrjagin classes (Ex)

1 Desdirata for this page

Ideally this page will also include at least the following information:

1. A reference, probably to Baues' book, for obstructions to null-homotopy.
2. A precise reference to [Kervaire1959].
3. A precise reference to Bott who also proved Theorem 2.1 (perhaps even before Kervaire?)
4. A reference to Husemoller's Fibre Bundles for a similar result for Chern classes. This also gives an explanation of the result via the Chern character which should be included in the page.
5. Further discussion about the same problem for other characteristic classes and other bases spaces.

Diarmuid Crowley 16:21, 17 March 2010 (UTC)

2 References

• [Kervaire1959] M. A. Kervaire, A note on obstructions and characteristic classes, Amer. J. Math. 81 (1959), 773–784. MR0107863 (21 #6585) Zbl 0124.16302