Timeline for Is the universal elliptic curve $\overline M_{1,2}$ a toric stack?
Current License: CC BY-SA 3.0
4 events
| when toggle format | what | by | license | comment | |
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| Feb 9, 2016 at 14:37 | vote | accept | Lev Borisov | ||
| Dec 5, 2013 at 1:21 | history | edited | Will Sawin | CC BY-SA 3.0 |
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| Dec 5, 2013 at 1:09 | comment | added | Lev Borisov | The funny thing is that $\overline M_{1,1}$ is definitely toric, but $M_{1,1}$ is not! The point at infinity that corresponds to the nodal curve is not torus invariant (the torus action is not particularly natural). I understand your argument about the fibers having (in general) four stacky points. So the best one can hope for is that the coarse moduli space is a toric surface. That seems plausible. | |
| Dec 4, 2013 at 23:15 | history | answered | Will Sawin | CC BY-SA 3.0 |