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arXiv math/9803007math.AG
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低亏格平面曲线的计数几何

Enumerative geometry of plane curves of low genus

Ravi Vakil

摘要:

我们收集了各种已知的结果(关于平面曲线和稳定映射的模空间),导出了新的递归公式,列举了具有各种行为的任何次数的低亏格平面曲线。给出了有理平面曲线、椭圆平面曲线和具有固定复结构的椭圆平面曲线示性数的递推公式。还给出了具有各种“余维1”行为(尖点、三角点、三尖点等)的椭圆(和有理)平面曲线的数目的递归。以及塞维里变种的几何和算术部分属)。对于亏格2和亏格3的平面曲线,我们也计算后者的数。我们依靠Caporaso,Diaz,Getzler,Harris,Ran的结果,特别是Pandharipande。

英文摘要:

We collect various known results (about plane curves and the moduli space of stable maps) to derive new recursive formulas enumerating low genus plane curves of any degree with various behaviors. Recursive formulas are given for the characteristic numbers of rational plane curves, elliptic plane curves, and elliptic plane curves with fixed complex structure. Recursions are also given for the number of elliptic (and rational) plane curves with various "codimension 1" behavior (cuspidal, tacnodal, triple pointed, etc., as well as the geometric and arithmetic sectional genus of the Severi variety). We compute the latter numbers for genus 2 and 3 plane curves as well. We rely on results of Caporaso, Diaz, Getzler, Harris, Ran, and especially Pandharipande.

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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