Timeline for Connected sum of surfaces
Current License: CC BY-SA 3.0
12 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Feb 9, 2012 at 0:22 | answer | added | William | timeline score: 0 | |
| Feb 7, 2012 at 10:49 | comment | added | Baptiste Calmès | @Agol: Thanks for pointing this reference. I was not aware of it. | |
| Feb 7, 2012 at 9:33 | history | edited | Baptiste Calmès | CC BY-SA 3.0 |
added 10 characters in body
|
| Feb 7, 2012 at 9:33 | comment | added | Baptiste Calmès | @algori: yes, you are perfectly right. I've made the correction. | |
| Feb 7, 2012 at 3:55 | comment | added | Ian Agol | This follows from the classification of non-compact surfaces by Richards: ams.org/journals/tran/1963-106-02/S0002-9947-1963-0143186-0/… | |
| Feb 7, 2012 at 0:19 | answer | added | Johannes Ebert | timeline score: 10 | |
| Feb 6, 2012 at 23:34 | comment | added | algori | Baptiste -- a small remark: did you in fact mean connected sum of connected surfaces? | |
| Feb 6, 2012 at 23:30 | comment | added | algori | Tom -- I don't know about surfaces (I suspect this is true but am not sure) but this is false for knot complements in $S^3$. | |
| Feb 6, 2012 at 22:38 | comment | added | Tom Goodwillie | True or false: every orientable surface has an orientation-reversing homeomorphism? | |
| Feb 6, 2012 at 21:08 | comment | added | Baptiste Calmès | Maybe I should have said that I take the word "surface" in the topological sense, i.e. a topological space that is separated and locally homeomorphic to $\mathbb{R}^2$. Thus, by non compact, I simply mean a surface in the above sense, that is not compact as a topological space. There is a well-known classification theorem for compact surfaces (they have a finite number of connected components and these are all connected sums of (a sphere and) tori and projective spaces). | |
| Feb 6, 2012 at 19:54 | comment | added | Igor Rivin | What do you mean by "non-compact"? Finite type with punctures, or something more general? | |
| Feb 6, 2012 at 19:11 | history | asked | Baptiste Calmès | CC BY-SA 3.0 |