arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1503.00715math.CVmath.AGmath.DS
收藏

面理空间的不可约分支

Irreducible components of the space of foliations by surfaces

W. Costa e Silva

阅读 PDF
arXiv 页面 ↗HTML 原文 ↗

摘要：

令$\mathcal{F}$记作$ f^{*}(\mathcal{G})$，其中$\mathcal{G}$是$ {\mathbb P^{n-1}}$上的$1$-维叶理，而$f:{\mathbb P^n}--->{\mathbb P^{n-1}}$是非线性一般有理映射.利用奇异全纯叶理的局部稳定性结果，证明了：若$n\geq 4$，则$\mathbb P^n$上复曲面的叶理$\mathcal{F}$在全纯变形下是全局稳定的.作为结果，我们得到的二维叶理空间的不可约组件在$\mathbb P^n$。我们还提出了一个结果，它的特点全纯叶理${\mathbb P^n}, n\geq 4$，可以得到作为一个拉回的1-叶理${\mathbb P^{n-1}}$的程度$d\geq2$。

英文摘要：

Let $\mathcal{F}$ be written as $ f^{*}(\mathcal{G})$, where $\mathcal{G}$ is a $1$-dimensional foliation on $ {\mathbb P^{n-1}}$ and $f:{\mathbb P^n}--->{\mathbb P^{n-1}}$ a non-linear generic rational map. We use local stability results of singular holomorphic foliations, to prove that: if $n\geq 4$, a foliation $\mathcal{F}$ by complex surfaces on $\mathbb P^n$ is globally stable under holomorphic deformations. As a consequence, we obtain irreducible components for the space of two-dimensional foliations in $\mathbb P^n$. We present also a result which characterizes holomorphic foliations on ${\mathbb P^n}, n\geq 4$ which can be obtained as a pull back of 1- foliations in ${\mathbb P^{n-1}}$ of degree $d\geq2$.

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。

↑