Timeline for Can a singular Deligne-Mumford stack have a smooth coarse space?
Current License: CC BY-SA 2.5
4 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jan 3, 2010 at 22:25 | comment | added | Anton Geraschenko | The quotient of the line by that action is smooth (since it has an etale cover by something smooth, namely the affine line), but this stack is not smooth (since it has an etale cover by something non-smooth, namely the axes). | |
| Jan 3, 2010 at 21:16 | comment | added | shenghao | what's the difference between this stack quotient and the quotient of the affine line (char is not 2) by x --> -x? | |
| Oct 21, 2009 at 4:47 | vote | accept | David Zureick-Brown | ||
| Oct 21, 2009 at 4:43 | history | answered | Anton Geraschenko | CC BY-SA 2.5 |