Pencils on Surfaces with Normal Crossings and the Kodaira Dimension of Mg,n
Pencils on Surfaces with Normal Crossings and the Kodaira Dimension of Mg,n
复制标题
具有法向交叉的曲面上的铅笔和 Mg,n 的 Kodaira 维数
DOI:
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发表时间:
2021
期刊:
影响因子:
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通讯作者:
Ignacio Barros
中科院分区:
文献类型:
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作者:
Daniele Agostini;Ignacio Barros
We study smoothing of pencils of curves on surfaces with normal crossings. As a consequence we show that the canonical divisor of M6,= is not pseudoeffective in some range, implying that M12,6, M12,7, M13,4 and M14,3 are uniruled. We provide upper bounds for the Kodaira dimension of M12,8 and M16. We also show that the moduli space of (46 + 5)-pointed hyperelliptic curves H6,46+5 is uniruled. Together with a recent result of Schwarz, this concludes the classification of moduli of pointed hyperelliptic curves with negative Kodaira dimension.
DOI:
10.1007/978-3-540-85420-3
发表时间:
2009-02
期刊:
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影响因子:
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作者:
J. Lipman;M. Hashimoto
通讯作者:
J. Lipman;M. Hashimoto