Timeline for What are the uses of the homotopy groups of spheres?
Current License: CC BY-SA 2.5
3 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| May 6, 2010 at 0:44 | comment | added | Andy Putman | Yes, but you can calculate the third stable stem pretty easily using the Serre spectral sequence, which seems to me to be a heck of a lot more elementary than the index theorem. But that probably says more about me than about the index theorem... | |
| Apr 29, 2010 at 14:00 | comment | added | José Figueroa-O'Farrill | Isn't this also a consequence of the index theorem for the Dirac operator? | |
| Apr 29, 2010 at 1:00 | history | answered | Daniel Moskovich | CC BY-SA 2.5 |