二次K3曲面纤维化三维流形的显式模型
代数几何
2019-08-15 v2
摘要
我们考虑在非奇异曲线上具有K3曲面纤维化的三维流形,并配备一个除子层,该除子层在一般纤维上定义了二次极化。在关于三维流形的某些假设下,我们证明其相对对数典范模型存在,并且可以从原始纤维化确定的一小组数据中显式重构。最后,我们证明了上述陈述的逆命题:在某些假设下,任何这样的一组数据都确定了一个三维流形,该三维流形作为具有二次K3曲面纤维化的三维流形的相对对数典范模型出现。
引用
@article{arxiv.1101.4763,
title = {Explicit Models for Threefolds Fibred by K3 Surfaces of Degree Two},
author = {Alan Thompson},
journal= {arXiv preprint arXiv:1101.4763},
year = {2019}
}
备注
Early sections have been restructured and shortened. Assumptions required for the main construction have been weakened. Final version, accepted for publication by the Canadian Journal of Mathematics