Timeline for Gerbes and Stacks
Current License: CC BY-SA 3.0
3 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Nov 12, 2014 at 19:57 | comment | added | Dan Petersen | I don't really understand you so at least one of us is confused. The fiber over a point of $U_i$ is a groupoid with one object and morphism set $BGL(1)$. | |
| Nov 12, 2014 at 16:13 | comment | added | Matthias Ludewig | Ok, so this becomes a stack (which is a gerbe as in the stack definition) on the big site of $M$. There is one object in each fiber for each index $i$ and one morphism from $i$ to $j$ if $U_{ij} \neq \emptyset$. Here I strictified the composition. Am I right? | |
| Nov 12, 2014 at 11:08 | history | answered | Dan Petersen | CC BY-SA 3.0 |