arXivDaily arXiv每日学术速递 周一至周五更新
arXiv math/9911164math.AG
收藏

关于复拉格朗日纤维化的奇异纤维

On singular fibres of complex Lagrangian fibrations

Daisuke Matsushita

摘要:

本文对四维全纯辛流形上射影复拉格朗日纤维化的判别轨迹的一般点上的奇异纤维进行了分类。奇异纤维F是以下任一种:F同构于椭圆曲线与Kodaira奇异纤维的乘积直到有限非分歧覆盖,或F是由极小椭圆直纹曲面的若干个副本组成的正规交叉簇,其对偶图是A_n,$\tilde{A_n}$,$\tilde{D_n}$或D_n型Dynkin图.

英文摘要:

We classify singular fibres over general points of the discriminant locus of projective complex Lagrangian fibrations on 4-dimensional holomorphic symplectic manifolds. The singular fibre F is the following either one: F is isomorphic to the product of an elliptic curve and a Kodaira singular fibre up to finite unramified covering or F is a normal crossing variety consisting of several copies of a minimal elliptic ruled surface of which the dual graph is Dynkin diagram of type A_n, $\tilde{A_n}$, $\tilde{D_n}$ or D_n.

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。

↑