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arXiv 1202.2696math.AGmath.AC
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Calabi-Yau型Mori梦空间与Cox环的对数正则性

Mori dream spaces of Calabi-Yau type and the log canonicity of the Cox rings

Yujiro Kawamata, Shinnosuke Okawa

摘要:

证明了特征为零的域上的Mori梦空间是Calabi-Yau型的当且仅当其Cox环在最坏情况下具有对数正则奇点。通过稍微修改的参数,我们还重新证明了由Cox环的对数终结性的Fano型品种的特征。

英文摘要:

We prove that a Mori dream space over a field of characteristic zero is of Calabi-Yau type if and only if its Cox ring has at worst log canonical singularities. By slightly modifying the arguments we also reprove the characterization of the varieties of Fano type by the log terminality of the Cox rings.

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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