Timeline for A remark by Gromov on 4-manifolds
Current License: CC BY-SA 3.0
6 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Aug 24, 2012 at 9:03 | comment | added | Misha | @Bruno: This is a theorem by Panov and Petrunin: arxiv.org/abs/1104.4814 | |
| Aug 6, 2012 at 14:40 | comment | added | Ian Agol | @Misha: Ok, I see, I also missed the part about allowing elliptic elements. | |
| Aug 6, 2012 at 14:05 | comment | added | Bruno Martelli | @Misha: How do we know that? | |
| Aug 6, 2012 at 5:42 | comment | added | Misha | Ian, I think, Gromov expects that every close PL 4-manifold is the quotient of the hyperbolic space by a discrete group with elliptic elements. Now that we know that every fp group could be the fundamental group of such quotient, maybe it is not such an outrageous expectation. If this is true then you get quotients that are homeo but not diffeo to each other. | |
| Aug 6, 2012 at 3:49 | history | edited | Ian Agol | CC BY-SA 3.0 |
added 8 characters in body
|
| Aug 5, 2012 at 22:03 | history | answered | Ian Agol | CC BY-SA 3.0 |