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Almost strictly sign regular matrices and Neville elimination with two-determinant pivoting

Author

Listed:
  • Alonso, P.
  • Peña, J.M.
  • Serrano, M.L.

Abstract

In 2007 Cortés and Peña introduced a pivoting strategy for the Neville elimination of nonsingular sign regular matrices and called it two-determinant pivoting. Neville elimination has been very useful for obtaining theoretical and practical properties for totally positive (negative) matrices and other related types of matrices. A real matrix is said to be almost strictly sign regular if all its nontrivial minors of the same order have the same strict sign. In this paper, some nice properties related with the application of Neville elimination with two-determinant pivoting strategy to almost strictly sign regular matrices are presented.

Suggested Citation

  • Alonso, P. & Peña, J.M. & Serrano, M.L., 2016. "Almost strictly sign regular matrices and Neville elimination with two-determinant pivoting," Applied Mathematics and Computation, Elsevier, vol. 289(C), pages 426-434.
    • Handle: RePEc:eee:apmaco:v:289:y:2016:i:c:p:426-434
    DOI: 10.1016/j.amc.2016.05.042
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