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arXiv 1206.2121math.DS
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紧divisor上奇异全纯叶理的拓扑

Topology of singular holomorphic foliations along a compact divisor

David Marín, Jean-François Mattei

摘要:

本文研究了复曲面上紧曲线$\uC$附近的奇异全纯叶理$\uF$。在对$(\uF,\uC)$的某些假设下,证明了存在一个包含$\uC$的曲线$\underline{\mc D}$的管状邻域系统$U$,使得$\uF_{|(U\setminus \underline{\mc D})}$的每个叶$L$在$U\setminus \underline{\mc D}$中不可压缩.我们还构建了一个表示的基本组的互补的$\underline{\mc D}$到一个合适的自同构群,它允许状态的拓扑分类的胚芽$(\uF,\uD)$,根据额外的,但通用的动力学假设的横向刚度。特别是,我们表明,这种芽的全纯叶理之间的每一个拓扑共轭可以变形扩展到他们的减少奇异的例外因子。

英文摘要:

We consider a singular holomorphic foliation $\uF$ defined near a compact curve $\uC$ of a complex surface. Under some hypothesis on $(\uF,\uC)$ we prove that there exists a system of tubular neighborhoods $U$ of a curve $\underline{\mc D}$ containing $\uC$ such that every leaf $L$ of $\uF_{|(U\setminus \underline{\mc D})}$ is incompressible in $U\setminus \underline{\mc D}$. We also construct a representation of the fundamental group of the complementary of $\underline{\mc D}$ into a suitable automorphism group, which allows to state the topological classification of the germ of $(\uF,\uD)$, under the additional but generic dynamical hypothesis of transverse rigidity. In particular, we show that every topological conjugation between such germs of holomorphic foliations can be deformed to extend to the exceptional divisor of their reductions of singularities.

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