Timeline for Compelling evidence that two basepoints are better than one
Current License: CC BY-SA 2.5
5 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Apr 21, 2013 at 14:38 | comment | added | Lee Mosher | See my very recent (April 2013) answer for connections with this answer. | |
| Oct 8, 2010 at 20:04 | comment | added | Bruno Martelli | (To be more precise, the topological space should be the quotient of the arc complex by the action of the mapping class group. The result is an orbifold. The orbifold fundamental group is the mapping class group. I don't know the details, however the groupoid notion here fits very well) | |
| Oct 8, 2010 at 16:54 | comment | added | Bruno Martelli | Oops, I skipped the word "fundamental". Luckily, this is indeed the fundamental groupoid of some topological space. The topological space is the arc complex. Every higher dimensional simplex in the arc complex corresponds to an ideal triangulation. Take one point in the interior of each such simplex: the resulting groupoid is what we need here. | |
| Oct 8, 2010 at 16:15 | comment | added | Daniel Moskovich | of what is it the fundamental groupoid? | |
| Oct 8, 2010 at 15:48 | history | answered | Bruno Martelli | CC BY-SA 2.5 |