Simple Neumann eigenvalues for the Laplace operator in a domain with a small hole

Simple Neumann eigenvalues for the Laplace operator in a domain with a small hole
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小孔域中拉普拉斯算子的简单诺依曼特征值

DOI:
10.1007/s13163-011-0081-8
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发表时间:
2012
影响因子:
0.8
通讯作者:
M. L. Cristoforis
M. L. Cristoforis
中科院分区:
数学3区
文献类型:
--
作者:
M. L. Cristoforis

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设\({\mathbb{A}}(\epsilon)\)是从ℝn的有界开域\({\mathbb{i}}^{o}\)中去掉一个大小为ϵ>0的小腔而得到的环域.然后我们假设对于某一自然指数L,[{\mathbb{i}}^{o}]>0是−Δ的一个简单的Neumann本征值,我们证明了存在实值实解析函数(HAT{λ}_{L}(CDOT,定义在ℝ2中(0,0)的开邻域中,使得−Δ在(A)中的第l个诺依曼本征值({L}[{A}])等于(L,Kappa_{n}\epsilon\log\epsilon)\)和使得\({\lambda}_{L}(0,0)=\lambda_{L}[{\mathbb{i}}^{o}]\)。这里,如果n是偶数,则κn=1,如果n是奇数,则κn=0。从而证明了,如果n是偶数,则[[ϵ{A}]]可以展开式为ϵ和ϵ的对数幂的收敛二重级数;如果n是奇数,则可以展开式为ϵ的收敛的ϵ的幂的级数.然后证明了相应本征函数的相关命题。
Let \({\mathbb{A}}(\epsilon)\) be the annular domain obtained by removing from a bounded open domain \({\mathbb{I}}^{o}\) of ℝn a small cavity of size ϵ>0. Then we assume that for some natural index l, \(\lambda_{l}[{\mathbb{I}}^{o}]>0\) is a simple Neumann eigenvalue of −Δ in \({\mathbb{I}}^{o}\), and we show that there exists a real valued real analytic function \(\hat{\lambda }_{l}(\cdot,\cdot)\) defined in an open neighborhood of (0,0) in ℝ2 such that the lth Neumann eigenvalue \(\lambda_{l}[{\mathbb{A}}(\epsilon)]\) of −Δ in \({\mathbb{A}}(\epsilon)\) equals \(\hat{\lambda}_{l}(\epsilon,\kappa_{n}\epsilon\log\epsilon)\) and such that \(\hat{\lambda}_{l}(0,0)= \lambda_{l}[{\mathbb{I}}^{o}]\). Here κn=1 if n is even and κn=0 if n is odd. Thus in particular, we show that if n is even \(\lambda_{l}[{\mathbb {A}}(\epsilon)]\) can be expanded into a convergent double series of powers of ϵ and ϵlogϵ and that if n is odd \(\lambda_{l}[{\mathbb{A}}(\epsilon)]\) can be expanded into a convergent series of powers of ϵ. Then related statements have been proved for corresponding eigenfunctions.
DOI: --
发表时间: 1990
期刊: --
影响因子: --
作者:
R. Dautray;P. Bénilan;J. Lions;I. N. Sneddon
通讯作者: R. Dautray;P. Bénilan;J. Lions;I. N. Sneddon
DOI: 10.1007/978-3-662-00547-7
发表时间: 1985
期刊: --
影响因子: --
作者:
K. Deimling
通讯作者: K. Deimling