Timeline for It is well-known that hyperbolic space is delta-hyperbolic, but what is delta?
Current License: CC BY-SA 2.5
8 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jun 13, 2010 at 9:09 | answer | added | Junyan Xu | timeline score: 1 | |
| May 5, 2010 at 13:49 | vote | accept | Paul Siegel | ||
| Apr 30, 2010 at 3:41 | answer | added | Sam Nead | timeline score: 13 | |
| Apr 30, 2010 at 3:34 | comment | added | Sam Nead | @Will -- the distance between the midpoints is not the desired delta. Paul is asking for the slightly smaller distance from one midpoint to the other edges. | |
| Apr 30, 2010 at 3:17 | answer | added | S. Carnahan♦ | timeline score: 14 | |
| Apr 30, 2010 at 2:53 | comment | added | Igor Belegradek | This is a well-known elementary exercise mentioned in Bridson-Heafliger and other places. Incidentally, the optimal delta is not totally useless: it could be helpful when doing explicit computations in $H^n$. For example, a cool fact is that in $H^n$ any $r$-quasi-convex set lies in bounded Hausdorff distance from its convex hull, and I would like to know this distance as a function of $r$; I suspect the optimal delta will be part of the formula. | |
| Apr 30, 2010 at 2:38 | answer | added | Matthew Stover | timeline score: 5 | |
| Apr 30, 2010 at 2:18 | history | asked | Paul Siegel | CC BY-SA 2.5 |