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arXiv 0905.2947math.AG
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关于稳定映射的模空间的Mori程序

Towards Mori's program for the moduli space of stable maps

Dawei Chen, Izzet Coskun, Charley Crissman

摘要:

在稳定映射$\bar M_{0,0}(P^{r},d)$的模空间上引入并计算了一类有效因子,对于小d,这类因子提供了对有效锥的极值射线和稳定基轨迹分解的一个很好的理解.我们还讨论了Mori程序中出现的各种双有理模型,包括Hilbert格式、Chow簇、$k$ -稳定映射空间、分支曲线空间和半稳定层空间。

英文摘要:

We introduce and compute the class of a number of effective divisors on the moduli space of stable maps $\bar M_{0,0}(P^{r},d)$, which, for small d, provide a good understanding of the extremal rays and the stable base locus decomposition for the effective cone. We also discuss various birational models that arise in Mori's program, including the Hilbert scheme, the Chow variety, the space of $k$-stable maps, the space of branchcurves and the space of semi-stable sheaves.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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