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arXiv · 1407.7839

Semiampleness criteria for divisors on $\overline M_{0,n}$

Maksym Fedorchuk
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Abstract

We develop new characteristic-independent combinatorial criteria for semiampleness of divisors on $\overline{M}_{0,n}$. As an application, we associate to a cyclic rational quadratic form satisfying a certain balancedness condition an infinite sequence of semiample line bundles. We also give several sufficient and effective conditions for a symmetric divisor on $\overline{M}_{0,n}$ to be semiample or nef.

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Maksym Fedorchuk. 2015-06-08. Semiampleness criteria for divisors on $\overline M_{0,n}$. https://arxiv.org/abs/1407.7839

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