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Author:

Gong, B. (Gong, B..) | Sun, J. (Sun, J..)

Indexed by:

EI Scopus SCIE

Abstract:

Regular convergence, together with other types of convergence, have been studied since the 1970s for discrete approximations of linear operators. In this paper, we consider the eigenvalue approximation of a compact operator T that can be written as an eigenvalue problem of a holomorphic Fredholm operator function F (η) = T - η1 I. Focusing on finite element methods (conforming, discontinuous Galerkin, non-conforming, etc.), we show that the regular convergence of the discrete holomorphic operator functions Fn to F follows from the compact convergence of the discrete operators Tn to T. The convergence of the eigenvalues is then obtained using abstract approximation theory for the eigenvalue problems of holomorphic Fredholm operator functions. The result can be used to prove the convergence of various finite element methods for eigenvalue problems such as the Dirichlet eigenvalue problem and the biharmonic eigenvalue problem. Copyright © 2023, Kent State University.

Keyword:

regular convergence eigenvalue problems finite element methods

Author Community:

  • [ 1 ] [Gong B.]Department of Mathematics, Faculty of Science, Beijing University of Technology, Beijing, 100124, China
  • [ 2 ] [Sun J.]Department of Mathematical Sciences, Michigan Technological University, Houghton, 49931, MI, United States

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Source :

Electronic Transactions on Numerical Analysis

ISSN: 1068-9613

Year: 2023

Volume: 58

Page: 228-243

ESI Discipline: MATHEMATICS;

ESI HC Threshold:9

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 5

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