Summary
LetA be ann×n real symmetric diagonal dominant matrix with positive diagonal partD, and letS 2=D −1 andH=SAS. The following relation between the condition number κ(H)=‖H −1‖ ‖H‖ and the spectral radiusr of the Jacobi matrix associated toA is proved:
Moreover, relations among κ(H), κ(A), the condition numbersC(H)=‖|H −1| |H|‖, andC(A) are investigated.
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Arioli, M., Romani, F. Relations between condition numbers and the convergence of the Jacobi method for real positive definite matrices. Numer. Math. 46, 31–42 (1985). https://doi.org/10.1007/BF01400253
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DOI: https://doi.org/10.1007/BF01400253