Timeline for The unit tangent bundle of 2- or 4-manifolds as a principal $S^{1}$- or $S^{3}$-bundle
Current License: CC BY-SA 3.0
2 events
| when toggle format | what | by | license | comment | |
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| Sep 29, 2014 at 16:21 | comment | added | Ali Taghavi | Prof. Bryant I deeply thank you very much for your interesting answer. I try to underestand the details with the help of interesting answer of Qiaochu Yuan. | |
| Sep 24, 2014 at 11:06 | history | answered | Robert Bryant | CC BY-SA 3.0 |