$\R^n$中二维几乎极小集的Hölder正则性
Hölder Regularity of Two-Dimensional Almost-Minimal Sets in $\R^n$
摘要:
本文给出了$\R^3$中关于2维Almgren几乎极小集的JeanTaylor正则性定理的一个很好的部分的不同的和可能更初等的证明。我们利用这个机会解决了几乎极小集的一些细节问题,将Taylor的一部分结果推广到$\R^n$中的2维几乎极小集,并给出了$\R^3$中的2维闭集$E$是极小的期望刻画,在这个意义上,$H^2(E\setminus F) \leq H^2(F\setminus E)$对于每个闭集$F$,使得存在有界集$B$,使得$F=E$在$B$和$F$之外分隔$E$分隔的$\R^3 \setminus B$的点。
英文摘要:
We give a different and probably more elementary proof of a good part of Jean Taylor's regularity theorem for Almgren almost-minimal sets of dimension 2 in $\R^3$. We use this opportunity to settle some details about almost-minimal sets, extend a part of Taylor's result to almost-minimal sets of dimension 2 in $\R^n$, and give the expected characterization of the closed sets $E$ of dimension 2 in $\R^3$ that are minimal, in the sense that $H^2(E\setminus F) \leq H^2(F\setminus E)$ for every closed set $F$ such that there is a bounded set $B$ so that $F=E$ out of $B$ and $F$ separates points of $\R^3 \setminus B$ that $E$ separates.
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