arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0905.0936math.DGmath.AP
收藏

关于中曲率流的推广

On the extension of the mean curvature flow

Nam Q. Le, Natasa Sesum

摘要:

考虑一族闭超曲面的光滑浸入$\mathbb{R}^{n+1}$以中曲率流$\frac{\partial F(p,t)}{\partial t} = -H(p,t)\cdot ν(p,t)$运动,对于$t\in [0,T)$。在\cite{Cooper}库珀最近证明,中曲率爆破在奇异时间$T$。我们表明,如果第第二基本型保持有界从下面所有的方式$T$,然后缩放不变平均曲率积分界是足够的扩展过去的时间流$T$,这个积分界是最佳的在某种意义上解释如下。

英文摘要:

Consider a family of smooth immersions $F(\cdot,t): M^n\to \mathbb{R}^{n+1}$ of closed hypersurfaces in $\mathbb{R}^{n+1}$ moving by the mean curvature flow $\frac{\partial F(p,t)}{\partial t} = -H(p,t)\cdot ν(p,t)$, for $t\in [0,T)$. In \cite{Cooper} Cooper has recently proved that the mean curvature blows up at the singular time $T$. We show that if the second fundamental form stays bounded from below all the way to $T$, then the scaling invariant mean curvature integral bound is enough to extend the flow past time $T$, and this integral bound is optimal in some sense explained below.

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。

↑