Spectral approximation of variationally-posed eigenvalue problems by nonconforming methods

This paper deals with the nonconforming spectral approximation of variationally posed eigenvalue problems. It is an extension to more general situations of known previous results about nonconforming methods. As an application of the present theory, convergence and optimal order error estimates are p...

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Bibliographic Details
Authors: Alonso, Ana Esther, Dello Russo, Anahí
Format: article
Status:Published version
Publication Date:2009
Country:Argentina
Institution:Universidad Nacional de La Plata
Repository:SEDICI (UNLP)
Language:English
OAI Identifier:oai:sedici.unlp.edu.ar:10915/82743
Online Access:http://sedici.unlp.edu.ar/handle/10915/82743
Access Level:Open access
Keyword:Ciencias Exactas
Eigenvalue problems
Nonconforming methods
Spectral approximation
Steklov eigenvalue problem
Description
Summary:This paper deals with the nonconforming spectral approximation of variationally posed eigenvalue problems. It is an extension to more general situations of known previous results about nonconforming methods. As an application of the present theory, convergence and optimal order error estimates are proved for the lowest order Crouzeix-Raviart approximation of the eigenpairs of two representative second-order elliptical operators.