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arXiv math/0307067math.AG
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一类复流形的大范围形变

Deformations in the large of some complex manifolds, I

Fabrizio Catanese

摘要:

本文主要研究紧致复流形$M$的形变等价流形类$M$的确定问题.如果$M$是复环面,则$X$也是复环面.在描述了曲线上的主全纯环面丛的结构之后,对于后一类流形也得到了类似的结果(大变形稳定性)。本文的一部分致力于环面上的主全纯环面丛的结构,建立Riemann双线性关系,并展示了所谓的Appell Humbert族,它可以精确地给出所有小变形。最后,给出了Blanchard-Calabi流形的一般定义,利用Sommese的一种旧的构造方法,证明了亏格为$g\geq 2$的曲线与二维复环面的乘积所对应的微分流形上的复结构族具有几种不同的变形类型.

英文摘要:

Main topic of the paper is the determination, for a compact complex manifold $M$, of the class of manifolds $X$ which are deformation equivalent to it. If $M$ is a complex torus, then also $X$ is so. After describing the structure of principal holomorphic torus bundles over curves, a similar result (stability by deformations in the large) is obtained also for the latter class of manifolds. A section of the paper is devoted to the structure of principal holomorphic torus bundles over tori, establishing the Riemann bilinear relations, and exhibiting a so called Appell Humbert family, which could conjecturally give all small deformations. Finally, a general definition is given of so called Blanchard -Calabi manifolds, which, using an old construction of Sommese, show that the family of complex structures on the differentiable manifold underlying the product of a curve of genus $g\geq 2$ with a 2-dimensional complex torus admits several distinct deformation types.

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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