Stability of block LDL factorization of a symmetric tridiagonal matrix

نویسنده

  • Nicholas J. Higham
چکیده

For symmetric inde®nite tridiagonal matrices, block LDL factorization without interchanges is shown to have excellent numerical stability when a pivoting strategy of Bunch is used to choose the dimension (1 or 2) of the pivots. Ó 1999 Elsevier Science Inc. All rights reserved. AMS classi®cation: 65F05; 65G05

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تاریخ انتشار 1997