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$sl_2$ conformal block divisors and the nef cone of $\bar{M}_{0,n}$
the nef cone Algebraic Geometry
2011/9/21
Abstract: We show that $sl_2$ conformal block divisors do not cover the nef cone of $\bar{M}_{0,6}$, or the $S_9$-invariant nef cone of $\bar{M}_{0,9}$. A key point is to relate the nonvanishing of in...