Logarithmic Stable Maps

Logarithmic Stable Maps
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对数稳定映射

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发表时间:
2008
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通讯作者:
Bumsig Kim
Bumsig Kim
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作者:
Bumsig Kim

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我们引入了对数稳定映射的概念,从一个最小的日志prestable曲线的一个日志扭曲的半稳定品种的形式$xy=0$。本文研究了这类映射的模空间的紧化问题,并给出了一个完全阻塞理论,它适用于(非)分歧稳定映射和稳定相对映射的模空间。作为应用,我们得到了椭圆稳定映射到射影空间的Kontsevich模空间的主分支的模去奇异化。
We introduce the notion of a logarithmic stable map from a minimal log prestable curve to a log twisted semi-stable variety of form $xy=0$. We study the compactification of the moduli spaces of such maps and provide a perfect obstruction theory, applicable to the moduli spaces of (un)ramified stable maps and stable relative maps. As an application, we obtain a modular desingularization of the main component of Kontsevich's moduli space of elliptic stable maps to a projective space.