Timeline for What's the difference between a PL simplicial sphere and a shellable simplicial sphere?
Current License: CC BY-SA 3.0
7 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jun 28, 2019 at 10:58 | answer | added | Hugh Thomas | timeline score: 2 | |
| Sep 21, 2015 at 15:12 | comment | added | Jim Conant | Ah, my comments above were directed at why Lickorish's theorem is important, but I see that this is not the question. | |
| Sep 21, 2015 at 14:37 | answer | added | Igor Rivin | timeline score: 5 | |
| Sep 21, 2015 at 14:03 | comment | added | Jim Conant | There may be nice uses for a non-shellable sphere, but I think the main way one would use the theorem in practice is as an affirmation that you can't assume that some random triangulation that someone hands you is shellable. | |
| Sep 21, 2015 at 13:54 | comment | added | Jim Conant | Well, it rules out a naive approach to the PL Poincare conjecture. You might have hoped to prove it by showing that a PL manifold that had the same homotopy type as the sphere was shellable, but you can't even do this for certain triangulations of the sphere. | |
| Sep 21, 2015 at 13:32 | review | First posts | |||
| Sep 21, 2015 at 14:34 | |||||
| Sep 21, 2015 at 13:28 | history | asked | user80533 | CC BY-SA 3.0 |