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arXiv 1303.0968math.AP
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一类带周长约束的谱泛函极小解的存在性和正则性

Existence and regularity of minimizers for some spectral functionals with perimeter constraint

Guido De Philippis, Bozhidar Velichkov

摘要:

本文证明了形状最优化问题$$\min\left\{λ_k(Ω):\ Ω\subset\R^d,\ Ω \hbox{open},\ P(Ω)=1,\ |Ω|<+\infty\right\},$$对任意$k\in\N$和维数$d$都有解。而且,每个解都是一个有界连通开集,其边界是在Hausdorff维数闭集$d-8$之外的$C^{1,α}$.我们的结果是更一般的,并适用于谱泛函的形式$f(λ_{k_1}(Ω),\dots,λ_{k_p}(Ω))$,增函数$f$满足一些适当的bi-Lipschitz型条件。

英文摘要:

In this paper we prove that the shape optimization problem $$\min\left\{λ_k(Ω):\ Ω\subset\R^d,\ Ω \hbox{open},\ P(Ω)=1,\ |Ω|<+\infty\right\},$$ has a solution for any $k\in\N$ and dimension $d$. Moreover, every solution is a bounded connected open set with boundary which is $C^{1,α}$ outside a closed set of Hausdorff dimension $d-8$. Our results are more general and apply to spectral functionals of the form $f(λ_{k_1}(Ω),\dots,λ_{k_p}(Ω))$, for increasing functions $f$ satisfying some suitable bi-Lipschitz type condition.

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