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arXiv 1006.4372math.AG
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有理曲面上亏格为2的曲线束

Pencils of genus two curves on rational surfaces

Shinya Kitagawa

摘要:

我们考虑了有理曲面上亏格为2的曲线的相对极小纤维化,其Picard数不是最大的。利用双有理态射,将这类曲面解释为平面曲线的束。我们发现,只有四个是典型的,在各种可能的模型。对于每个标准束,我们给出了一个平凡的Mordell-Weil群的例子。

英文摘要:

We consider relatively minimal fibrations of curves of genus two on rational surfaces whose Picard numbers are not maximal. By birational morphisms, such fibred surfaces are interpreted as pencils of plane curves. We show that only four are canonical, among a variety of possible models. For each canonical pencil, we give an example with trivial Mordell-Weil group.

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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