中文

通过带位移逆迭代求解拉普拉斯算子的特征值和特征函数

谱理论 2012-08-02 v2 数值分析

摘要

本文提出了一种迭代方法,其灵感来自有限线性代数中的带位移逆迭代技术,旨在寻找任意有界域ΩRN\Omega\subset R^{N}上具有齐次Dirichlet边界条件的拉普拉斯算子的特征值和特征函数。该方法采用直接的泛函分析方法,并不将拉普拉斯算子的特征值近似为有限线性算子的特征值。它基于在节面之外的一致收敛性,可以产生一种简单快速的算法,以最小的计算需求来计算特征值,而不是使用有限线性代数中普遍存在的Rayleigh商。此外,还引入了相关的无限维Sobolev空间中Rayleigh商的一种替代表达式,该表达式避免了梯度的积分,并被证明更有效。该方法也可用于产生任意给定函数uL2(Ω)u\in L^{2}(\Omega)的谱分解。

关键词

引用

@article{arxiv.1011.3266,
  title  = {Eigenvalues and eigenfunctions of the Laplacian via inverse iteration with shift},
  author = {Rodney Josué Biezuner and Grey Ercole and Breno Loureiro Giacchini and Eder Marinho Martins},
  journal= {arXiv preprint arXiv:1011.3266},
  year   = {2012}
}

备注

In this version the numerical tests in Section 6 were considerably improved and the Section 5 entitled "Normalization at each step" was introduced. Moreover, minor adjustments in the Section 1 (Introduction) and in the Section 7 (Fi nal Comments) were made. Breno Loureiro Giacchini was added as coauthor