Volume 10, Issue 1
A Local Positive (Semi)Definite Shift-Splitting Preconditioner for Saddle Point Problems with Applications to Time-Harmonic Eddy Current Models

Yang Cao and Zhi-Ru Ren

10.4208/eajam.150319.200619

East Asian J. Appl. Math., 10 (2020), pp. 135-157.

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  • Abstract

A local positive (semi)defifinite shift-splitting preconditioner for non-Hermitian saddle point problems arising in fifinite element discretisations of hybrid formulations of time-harmonic eddy current models is constructed. The convergence of the corresponding iteration methods is proved and the spectral properties of the associated preconditioned saddle point matrices are studied. Numerical experiments show the ef- fificiency of the proposed preconditioner for Krylov subspace methods.

  • History

Published online: 2020-01

  • AMS Subject Headings

65F10, 65F50

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