Timeline for Proofs of Rohlin's theorem (an oriented 4-manifold with zero signature bounds a 5-manifold)
Current License: CC BY-SA 2.5
6 events
| when toggle format | what | by | license | comment | |
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| S Feb 9, 2017 at 13:44 | history | suggested | Manuel Bärenz |
Added tag [kirby-calculus]
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| Feb 9, 2017 at 13:21 | review | Suggested edits | |||
| S Feb 9, 2017 at 13:44 | |||||
| Nov 15, 2010 at 17:39 | comment | added | Bruno Martelli | Thank you very much, I though Thom only considered the non-oriented case. I am curious to see which techniques he used. | |
| Nov 14, 2010 at 13:26 | comment | added | Johannes Ebert | Rene Thom, "Quelques propriétés globales des variétés différentiables", Commentarii Mathematici Helvetici 28, page 17–86?? In this well known and fields-medal-winning paper, Thom computes the unoriented cobordism completely, and also a large chunk of oriented cobordism, including the statement that $\Omega^{SO}_{4}=\mathbb{Z}$, which immediately implies the result you are asking for. But Thom's construction relies on embedding into euclidean space as well. | |
| Nov 13, 2010 at 19:07 | answer | added | Paul | timeline score: 11 | |
| Nov 13, 2010 at 16:49 | history | asked | Bruno Martelli | CC BY-SA 2.5 |