Timeline for Polarizations on $M_{0,n}$ from Kapranov's quotient constructions
Current License: CC BY-SA 2.5
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| Apr 5, 2011 at 22:37 | comment | added | Noah Giansiracusa | Indeed, it is a nice paper. The Chow quotient maps to all the GIT quotients, so the polarizations on the latter pull back to the former, namely M_{0,n}, but the Chow-GIT morphisms are contractions (for n > 6), so come from nef but not ample divisors. So the Alexeev-Swinarski divisors cannot be the Hilbert or Chow polarizations (though perhaps their convex hull contains these ample divisors?...) | |
| Apr 5, 2011 at 20:55 | comment | added | J.C. Ottem | There are some papers on this question. For starters, have you seen Alexeev and Swinarski's paper math.uga.edu/~davids/0812.0778.pdf? | |
| Apr 5, 2011 at 15:06 | history | asked | Noah Giansiracusa | CC BY-SA 2.5 |