On the Moduli Space of Pointed Algebraic Curves of Low Genus ---A Computational Approach---

On the Moduli Space of Pointed Algebraic Curves of Low Genus ---A Computational Approach---
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低亏格尖代数曲线的模空间——一种计算方法——

DOI:
10.3836/tjm/1244208488
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发表时间:
2004
影响因子:
0.6
通讯作者:
T. Mori
T. Mori
中科院分区:
数学4区
文献类型:
--
作者:
T. Nakano;T. Mori

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。当 g 很小时 (2 ≤ g ≤ 5) 时,我们显式计算具有给定数值半群 N 的亏格 g 的尖代数曲线的模空间 M N g , 1 。已知这样的模空间 M N g , 1 对于 g ≤ 7 是非空的。除了少数情况外,本文获得的主要结果是 g ≤ 5 时 M N g , 1 的不可约性和维数的确定。特别是,事实证明,许多模空间都是非有理的。
. We compute explicitly the moduli space M N g , 1 of pointed algebraic curves of genus g with a given numerical semigroup N when g is small (2 ≤ g ≤ 5). It is known that such a moduli space M N g , 1 is non-empty for g ≤ 7. The main results obtained in this note are the irreducibility and the determination of the dimension of M N g , 1 for g ≤ 5 except a few cases. In particular, it turns out that many of these moduli spaces are unirational.