A Numerical Method to Verify the Elliptic Eigenvalue Problems Including a Uniqueness Property
A Numerical Method to Verify the Elliptic Eigenvalue Problems Including a Uniqueness Property
复制标题
验证具有唯一性的椭圆特征值问题的数值方法
DOI:
10.1007/s006070050054
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发表时间:
1999
期刊:
影响因子:
3.7
通讯作者:
K. Nagatou
中科院分区:
文献类型:
--
作者:
K. Nagatou
Abstract.We propose a numerical method to enclose the eigenvalues and eigenfunctions of second-order elliptic operators with local uniqueness. We numerically construct a set containing eigenpairs which satisfies the hypothesis of Banach's fixed point theorem in a certain Sobolev space by using a finite element approximation and constructive error estimates. We then prove the local uniqueness separately of eigenvalues and eigenfunctions. This local uniqueness assures the simplicity of the eigenvalue. Numerical examples are presented.