中文

关于$\mathbb{P}^3$吹胀的自同构

动力系统 2012-12-27 v2 代数几何 复变函数

摘要

π:XP3\pi :X\rightarrow \mathbb{P}^3是沿光滑中心进行有限次吹胀的复合。我们证明,对于“几乎所有”这样的XX,如果fAut(X)f\in Aut(X),则其第一和第二动力次数相同。我们还构造了许多有限吹胀XP3X\rightarrow \mathbb{P}^3的例子,其自同构群Aut(X)Aut(X)只有有限多个连通分支。我们还提出了一个启发式论证,表明对于“一般”的紧Kähler流形XX(维数3\geq 3),自同构群Aut(X)Aut(X)只有有限多个连通分支。

关键词

引用

@article{arxiv.1202.4224,
  title  = {On automorphisms of blowups of $\mathbb{P}^3$},
  author = {Tuyen Trung Truong},
  journal= {arXiv preprint arXiv:1202.4224},
  year   = {2012}
}

备注

21 pages. Examples on blowups of $P^2\times P1$ and $P^1\times P^1\times P^1$ included. Combined with recent results of Bayraktar and Cantat, the heuristic argument in the previous version proves a stronger conclusion: For a "generic" compact Kahler manifold $X$ of dimension at least 3, $Aut(X)$ has only finitely many connected components