Timeline for Groupoid structure on G/H?
Current License: CC BY-SA 2.5
4 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Mar 12, 2010 at 3:58 | vote | accept | JunwuTu | ||
| Mar 11, 2010 at 4:38 | comment | added | Theo Johnson-Freyd | A 2-group is the same as a group object in groupoids. | |
| Mar 11, 2010 at 1:57 | comment | added | JunwuTu | The second part of your comments is what I am looking for. I was thinking of forming a groupoid with objects given by conjugacy class of the subgroup $H$. But it is not clear how to define the morphisms. I think your idea of forming a 2-group is quite interesting. But I don't quite understand it. So i understand that $G$ can be seen as a 2-groupoid. But why are we expecting that the "action 2-group" you were mentioning has a groupal groupoid structure? | |
| Mar 11, 2010 at 1:43 | history | answered | Theo Johnson-Freyd | CC BY-SA 2.5 |