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arXiv 1506.04033math.SP
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关于欧氏球中的结点域

On nodal domains in Euclidean balls

Bernard Helffer, Mikael Persson Sundqvist

摘要:

- 是的Pleijel(1956)证明了在具有Dirichlet条件的Laplacian情形下,当维数为$\geq 2$时,Courant节点定理(Courant sharp情形)中的等式仅对有限个特征值成立。最近Polterovich扩展的结果诺依曼问题在两个维度的情况下,边界是分段解析。一个来自谱极小分拆理论的问题激发了对柯朗定理中等式的分析。在本文中,我们确定了球中Dirichlet和Neumann Laplacian在$\mathbb R^d$,$d\geq 2$中的Courant尖锐特征值。关于$\mathbb R^2$中圆盘上Dirichlet Laplacian的结果是由B. Helffer,T. Hoffmann-Ostenhof和S.泰拉奇尼

英文摘要:

Å. Pleijel (1956) has proved that in the case of the Laplacian with Dirichlet condition, the equality in the Courant nodal theorem (Courant sharp situation) can only be true for a finite number of eigenvalues when the dimension is $\geq 2$. Recently Polterovich extended the result to the Neumann problem in two dimensions in the case when the boundary is piecewise analytic. A question coming from the theory of spectral minimal partitions has motivated the analysis of the cases when one has equality in Courant's theorem. In this note, we identify the Courant sharp eigenvalues for the Dirichlet and Neumann Laplacians in balls in $\mathbb R^d$, $d\geq 2$. The result for the Dirichlet Laplacian in the disc in $\mathbb R^2$ was obtained by B. Helffer, T. Hoffmann-Ostenhof and S. Terracini.

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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