Abstract
Fast inversion algorithms for strongly nonsingular matrices of the form \(C = \left[ {\frac{{z_i^T{y_j}}}{{{c_i} - {d_j}}}} \right]\) (generalized Cauchy matrices), where z i , y j are column vectors and c i , d j are complex numbers, are presented. The approach is based on the interpretation of equations Cξ = η as tangential interpolation problems. Furthermore, it is described how other types of structured matrices like Toeplitz matrices and their generalizations can be transformed into generalized Cauchy matrices. This transformation can be utilized in order to get stable algorithms.
The work was carried out during a visit at the IMA, University of Minnesota in Minneapolis, March 1992.
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Heinig, G. (1995). Inversion of Generalized Cauchy Matrices and other Classes of Structured Matrices. In: Bojanczyk, A., Cybenko, G. (eds) Linear Algebra for Signal Processing. The IMA Volumes in Mathematics and its Applications, vol 69. Springer, New York, NY. https://doi.org/10.1007/978-1-4612-4228-4_5
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DOI: https://doi.org/10.1007/978-1-4612-4228-4_5
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