Timeline for Self-intersection of immersed surfaces and connected sum
Current License: CC BY-SA 3.0
9 events
| when toggle format | what | by | license | comment | |
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| Jul 20, 2013 at 15:56 | vote | accept | GFR | ||
| Jul 18, 2013 at 9:19 | comment | added | András Szűcs | Dear Martel, I think the proof is that "intersection (of homology classes) is dual to the cohomological multiplication, and A#B is equal to A+B", Andras | |
| Jul 18, 2013 at 6:00 | comment | added | András Szűcs | Of course the connected sum of two spheres is homeomorphic to one sphere, But we are considering the represented homology classes. $A$ and $B$ denote the represented homology classes , not just the manifolds themselves. | |
| Jul 18, 2013 at 4:23 | comment | added | JHM | I see an "answer" but not a proof. How can you convince me that the connect sum of two $2$-spheres is not homotopic (actually homeomorphic) to the single $2$-sphere? | |
| Jul 17, 2013 at 20:30 | history | edited | Ricardo Andrade | CC BY-SA 3.0 |
correct typos
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| S Jul 17, 2013 at 19:21 | history | suggested | Marco Golla | CC BY-SA 3.0 |
Done a bit of LaTeX editing.
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| Jul 17, 2013 at 19:14 | review | Suggested edits | |||
| S Jul 17, 2013 at 19:21 | |||||
| Jul 17, 2013 at 15:00 | history | edited | András Szűcs | CC BY-SA 3.0 |
added 163 characters in body
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| Jul 17, 2013 at 14:41 | history | answered | András Szűcs | CC BY-SA 3.0 |