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arXiv math/0406143math.AG
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超椭圆和三角Fano三重

Hyperelliptic and trigonal Fano threefolds

Ivan Cheltsov, Constantin Shramov, Victor Przyjalkowski

摘要:

我们分类的Fano 3-folds与典型Gorenstein奇点的反正则线性系没有基点,但不给嵌入,我们分类的反正则嵌入的Fano 3-folds与典型Gorenstein奇点不是二次曲面的交集。我们还研究了大多数这些品种的合理性问题。

英文摘要:

We classify Fano 3-folds with canonical Gorenstein singularities whose anticanonical linear system has no base points but does not give an embedding, and we classify anticanonically embedded Fano 3-folds with canonical Gorenstein singularities which are not intersections of quadrics. We also study the rationality questions for most of these varieties.

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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