Abstract

An efficient preconditioner for the Chebyshev differencing operator is considered. The corresponding preconditioned eigenvalues are real and positive and lie between 1 and ${\pi / 2}$. An eixpelicit formula for these eigenvalues and the corresponding eigenfunctions is given. The results are generalized to the case of operators related to Chebyshev discretizations of systems of linear differential equations.

MSC codes

  1. 15A12
  2. 65F15

Keywords

  1. spectral approximations
  2. preconditioning
  3. eigenvalues

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References

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Information

Published In

cover image SIAM Journal on Numerical Analysis
SIAM Journal on Numerical Analysis
Pages: 1024 - 1031
ISSN (online): 1095-7170

History

Submitted: 3 March 1986
Accepted: 1 October 1986
Published online: 14 July 2006

MSC codes

  1. 15A12
  2. 65F15

Keywords

  1. spectral approximations
  2. preconditioning
  3. eigenvalues

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