arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1702.01307math.APmath.OCmath.SP
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具有障碍的Laplacian的第一Dirichlet eigenvalue的优化

Optimizing the first Dirichlet eigenvalue of the Laplacian with an obstacle

Antoine Henrot, Davide Zucco

摘要:

在平面的一个固定的有界区域$Ω$内,我们寻找给定周长的最佳紧连通集$K$,以最大化第一Dirichlet特征值$λ_1(Ω\setminus K)$。我们讨论了一些定性性质的最大化,走向存在性,正则性和几何。然后,我们研究的问题,在特定的域:磁盘,环,更一般地说,磁盘凸孔。在这些情况下,我们证明对称性,并在某些情况下,非对称的结果,确定解决方案。我们选择使用外部闵可夫斯基内容作为“好”的周界概念。因此,我们证明了它关于Hausdorff收敛的下半连续性和外Minkowski容度等于经典周长的Hausdorff下半连续包络的一些新性质.

英文摘要:

Inside a fixed bounded domain $Ω$ of the plane, we look for the best compact connected set $K$, of given perimeter, in order to maximize the first Dirichlet eigenvalue $λ_1(Ω\setminus K)$. We discuss some of the qualitative properties of the maximizers, moving toward existence, regularity and geometry. Then we study the problem in specific domains: disks, rings, and, more generally, disks with convex holes. In these situations, we prove symmetry and, in some cases non symmetry results, identifying the solution. We choose to work with the outer Minkowski content as the "good" notion of perimeter. Therefore, we are led to prove some new properties for it as its lower semicontinuity with respect to the Hausdorff convergence and the fact that the outer Minkowski content is equal to the Hausdorff lower semicontinuous envelope of the classical perimeter.

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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