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arXiv math/0011214math.AG
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奇异平面曲线的Hilbert计数方法

Counting Singular Plane Curves Via Hilbert Schemes

Heather Russell

摘要:

本文给出了一种利用点希尔伯特格式计算光滑曲面上适当充分的线性级数中具有给定类型奇异性的曲线个数的方法。我们的方法可以满足的奇异性类型包括局部方程x^a +y^b满足b-1 < a < 3b+1的拓扑型。给出了局部方程为x^2+y^n(1<n<9)的解析型奇异曲线的例子。

英文摘要:

We give a method of counting the number of curves with a given type of singularity in a suitably ample linear series on a smooth surface using punctual Hilbert schemes. The types of singulaties for which our methods suffice include the topological type with local equation x^a +y^b with b-1 < a < 3b+1. We work out the example of curves with the analytic type of singularity with local equation x^2+y^n for 1<n<9.

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