Timeline for relationship between borromean rings and hanging-a-picture-from-three-nails puzzle?
Current License: CC BY-SA 2.5
7 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Apr 13, 2017 at 12:58 | history | edited | CommunityBot |
replaced http://mathoverflow.net/ with https://mathoverflow.net/
|
|
| Mar 29, 2010 at 16:05 | vote | accept | Aaron Mazel-Gee | ||
| Mar 19, 2010 at 16:31 | comment | added | Ian Agol | think of the path of the point in space-time (which is 3-dimensional, since the surface is 2-dimensional). This gives a braid, since in each time slice there is a single point. | |
| Mar 19, 2010 at 6:13 | comment | added | Aaron Mazel-Gee | That sounds awesome. What do you mean by "take the trace of this motion in time", though? I'd imagine that it means "follow the path traced out by the moving point", except that I don't see how one would choose a particular element of <pi><sub>1</sub>, so that's probably not right... | |
| Mar 18, 2010 at 6:07 | comment | added | Ian Agol | @ Clark: yes. | |
| Mar 18, 2010 at 5:37 | comment | added | Pete L. Clark | @Agol: The fundamental group of a 3-punctured sphere is free on 2 generators, right? | |
| Mar 17, 2010 at 22:41 | history | answered | Ian Agol | CC BY-SA 2.5 |