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Finite element-Galerkin approximation of the eigenvalues and eigenvectors of selfadjoint problems. (English) Zbl 0675.65108
Authors’ summary: Refined estimates for Galerkin approximations of eigenvalues and eigenvectors of generalized selfadjoint problems are presented. A simplified proof and extension of the present results is done. Both simple and multiple eigenvalues are treated.
Reviewer: L.Boubelíková

MSC:
65N25 Numerical methods for eigenvalue problems for boundary value problems involving PDEs
65N15 Error bounds for boundary value problems involving PDEs
65N30 Finite element, Rayleigh-Ritz and Galerkin methods for boundary value problems involving PDEs
35P15 Estimates of eigenvalues in context of PDEs
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