New nef divisors on ${\bar{M}}_{0,n}$

Abstract

We give a direct proof, valid in arbitrary characteristic, of nefness for two families of F-nef divisors on ${\bar{M}}_{0,n}$. The divisors we consider include all type A level one conformal block divisors as well as divisors previously not known to be nef.

References in corpus (4)

• $s{l}_2$ conformal block divisors and the nef cone of ${\bar{M}}_{0,n}$
• Conformal blocks divisors on ${\bar{M}}_{0,n}$ from $s{l}_2$
• Cyclic covering morphisms on ${\bar{M}}_{0,n}$
• Veronese quotient models of ${\bar{M}}_{0,n}$ and conformal blocks

Cited by in corpus (2)

• Semiampleness criteria for divisors on ${\overline{M}}_{0,n}$
• On $S_n$-invariant conformal blocks vector bundles of rank one on ${\overline{M}}_{0,n}$