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arXiv 1702.03415math.SP
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三维光滑区域上弹性Neumann-Poincaré算子:多项式compactness和谱结构

Elastic Neumann-Poincaré operators on three dimensional smooth domains: Polynomial compactness and spectral structure

Kazunori Ando, Hyeonbae Kang, Yoshihisa Miyanishi

摘要:

我们证明了定义在三维有界区域光滑边界上的弹性Neumann-Poincaré算子是多项式紧的,而该算子是非紧的。因此,我们证明了弹性Neumann-Poincaré算子的谱由三个非空的特征值序列组成,这些特征值序列累积到由Lamé参数确定的一定数目。利用曲面里斯变换、伪微分算子的微积分和谱映射定理证明了这些结果。

英文摘要:

We prove that the elastic Neumann--Poincaré operator defined on the smooth boundary of a bounded domain in three dimensions, which is known to be non-compact, is in fact polynomially compact. As a consequence, we prove that the spectrum of the elastic Neumann-Poincaré operator consists of three non-empty sequences of eigenvalues accumulating to certain numbers determined by Lamé parameters. These results are proved using the surface Riesz transform, calculus of pseudo-differential operators and the spectral mapping theorem.

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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