中文

高余维平均曲率流掐挤解的奇点模型

微分几何 2020-04-20 v2

摘要

我们考虑 Rn+1\mathbb{R}^{n+1}n3n \geq 3)中平均曲率流的远古解,其弱凸、一致二凸,并满足导数估计 Aγ1H2,2Aγ2H3|\nabla A| \leq \gamma_1 |H|^2, |\nabla^2 A| \leq \gamma_2 |H|^3。我们证明此类解是非塌缩的。作为应用,在任意余维下,我们考虑 RN\mathbb{R}^N 中紧致 nn 维(n5n \geq 5)平均曲率流解,满足掐挤条件 H>0|H| > 0A2<c(n)H2|A|^2 < c(n) |H|^2c(n)=min{1n2,3(n+1)2n(n+2)}c(n) = \min\{\frac{1}{n-2}, \frac{3(n+1)}{2n(n+2)}\}。我们得出结论:在首个奇异时刻的任何放大模型必为余维一收缩球、收缩柱或平移碗孤子。

关键词

引用

@article{arxiv.1910.03968,
  title  = {Singularity models of pinched solutions of mean curvature flow in higher codimension},
  author = {Keaton Naff},
  journal= {arXiv preprint arXiv:1910.03968},
  year   = {2020}
}

备注

We have added a structure theorem for the case when the ancient solution is compact