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Sparse algorithms for indefinite system of linear equations

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Abstract

 Sparse LDLT algorithms, based upon mixed forward-backward factorization strategies, are developed for direct solution of indefinite system of linear equations. A simple rotation matrix is also introduced and incorporated into 2×2 pivoting strategies. Several test problems have been conducted in order to evaluate the numerical performance of the proposed algorithms, and its associated FORTRAN codes.

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Authors and Affiliations

  1. Hong Kong University of Science & Technology, Kowloon, Hong Kong, , , , , , CN

    P. Chen, P. Tong & T. Y. P. Chang

  2. Old Dominion University, Norfolk, VA, USA, , , , , , US

    H. Runesha & D. T. Nguyen

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  1. P. Chen
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  2. H. Runesha
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  3. D. T. Nguyen
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  4. P. Tong
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  5. T. Y. P. Chang
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Chen, P., Runesha, H., Nguyen, D. et al. Sparse algorithms for indefinite system of linear equations. Computational Mechanics 25, 33–42 (2000). https://doi.org/10.1007/s004660050013

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  • DOI: https://doi.org/10.1007/s004660050013

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