Timeline for Stiefel-Whitney total class with prescribed zeros
Current License: CC BY-SA 3.0
4 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Apr 16, 2017 at 11:25 | comment | added | R. Alexandre | oh yeah I put it wrong. Maybe you have an idea about finding such a bundle over a $4$-manifold ? | |
| Apr 16, 2017 at 11:13 | comment | added | Mark Grant | @R.Alexandre: That's right, that every orientable 4-manifold admits a Spin^c structure. I don't see why that would imply that every oriented bundle over a 4-manifold admits a Spin^c structure. | |
| Apr 16, 2017 at 11:01 | comment | added | R. Alexandre | Thanks! I'm not very familiar with Spin (and Spin^c) structures. But as a I can see, there is no manifold in dimension less than 4 that doesn't admit a Spin^c structure. Does it mean we can't find any example in dimension less than 4? | |
| Apr 16, 2017 at 9:49 | history | answered | Mark Grant | CC BY-SA 3.0 |