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arXiv 2302.13396math.AP
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等周条件、下半连续性及带测度数据的周长泛函的存在性结果

Isoperimetric conditions, lower semicontinuity, and existence results for perimeter functionals with measure data

Thomas Schmidt

AI总结:

本文在 $\mathbb{R}^n$ 上建立了带测度数据的周长泛函的下半连续性,推导了多种约束下极小值的存在性,并提出关键的小体积等周条件以捕捉抵消效应,为预定平均曲率问题奠定了变分基础。

摘要:

我们在 $\mathbb{R}^n$ 上建立了带测度数据的周长泛函的下半连续性结果,并推导出这些泛函在 Dirichlet 边界条件、障碍或体积约束下极小值的存在性。换言之,我们为 $\mathbb{R}^n$ 上平均曲率测度建立了一种基于周长的变分方法基础,能够证明各种带测度数据的预定平均曲率问题的存在性。作为对测度数据的关键且本质上最优的假设,我们提出了一种名为小体积等周条件的新条件,它精确捕捉了抵消效应,并具有令人惊讶的丰富性质与多种等价表述。特别地,我们证明了一大类 $(n{-}1)$ 维测度满足小体积等周条件,因此在我们的理论中是容许的。我们的分析包含无穷测度及在非常一般区域上的半连续性结果。

英文摘要:

We establish lower semicontinuity results for perimeter functionals with measure data on $\mathbb{R}^n$ and deduce the existence of minimizers to these functionals with Dirichlet boundary conditions, obstacles, or volume-constraints. In other words, we lay foundations of a perimeter-based variational approach to mean curvature measures on $\mathbb{R}^n$ capable of proving existence in various prescribed-mean-curvature problems with measure data. As crucial and essentially optimal assumption on the measure data we identify a new condition, called small-volume isoperimetric condition, which sharply captures cancellation effects and comes with surprisingly many properties and reformulations in itself. In particular, we show that the small-volume isoperimetric condition is satisfied for a wide class of $(n{-}1)$-dimensional measures, which are thus admissible in our theory. Our analysis includes infinite measures and semicontinuity results on very general domains.

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。

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