Timeline for A nontrivial principal bundle which satisfies Leray-Hirsch theorem
Current License: CC BY-SA 4.0
13 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Nov 17, 2020 at 22:55 | vote | accept | Ali Taghavi | ||
| Jul 8, 2020 at 15:16 | answer | added | Jens Reinhold | timeline score: 2 | |
| Jul 7, 2020 at 23:20 | history | became hot network question | |||
| Jul 7, 2020 at 21:48 | comment | added | Ulrich Pennig | @AllenHatcher Thank you for adding the details. I was in a rush and did not have time to fill them in. | |
| Jul 7, 2020 at 21:44 | comment | added | Allen Hatcher | The examples pointed out by Ulrich Pennig are the bundles $U(n-1) \to U(n) \to S^{2n-1}$, $SU(n-1) \to SU(n) \to S^{2n-1}$, and $Sp(n-1) \to Sp(n) \to S^{4n-1}$ so one doesn't have to look far to find such examples. Imagine what Lie group theory would be like if all these bundles were trivial, so all these groups would be products of odd-dimensional spheres! | |
| Jul 7, 2020 at 16:57 | answer | added | Jason DeVito - on hiatus | timeline score: 9 | |
| Jul 7, 2020 at 15:55 | answer | added | Joshua Mundinger | timeline score: 10 | |
| Jul 7, 2020 at 15:53 | comment | added | Ulrich Pennig | Hatcher Corollary 4D.3 should provide examples if I am not mistaken. | |
| S Jul 7, 2020 at 15:52 | history | suggested | RobPratt | CC BY-SA 4.0 |
corrected title
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| Jul 7, 2020 at 15:28 | review | Suggested edits | |||
| S Jul 7, 2020 at 15:52 | |||||
| S Jul 7, 2020 at 15:27 | history | suggested | RobPratt | CC BY-SA 4.0 |
corrected spelling
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| Jul 7, 2020 at 15:26 | review | Suggested edits | |||
| S Jul 7, 2020 at 15:27 | |||||
| Jul 7, 2020 at 15:20 | history | asked | Ali Taghavi | CC BY-SA 4.0 |