Browsing by Author "Kontos, Athanassios"

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    An Algorithm to Factor Polynomial Matrices
    (1979-04-01) Kontos, Athanassios
    A new algorithm for factoring polynomial matrices, based on concept of elementary factors, is presented in this report. This algorithm does not use numerically unsatisfactory Euclidean type operations.
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    APL Programs for Polynomial Matrix Manipulations
    (1979-12-01) Kontos, Athanassios
    This report contains descriptions and listings of APL programs.
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    APL Programs for Singular Value Decomposition and Generalized Eigenvalue Problems
    (1979-09-20) Kontos, Athanassios; Moore, Robert
    This report contains descriptions and listings of APL functions for singular value decomposition and solution of the generalized eigenvalue problem.
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    Computation of a Unimodular Matrix
    (1979-12-01) Kontos, Athanassios; de Figueiredo, Rui J.P.
    An algorithm for computing a unimodular matrix U(λ) satisfying the equation [A(λ) B(λ)] U(λ) = [1 0] is presented where A(λ) and B(λ) are relatively left prime polynomial matrices. The approach used avoids Euclidean-type operations used in standard Gaussian elimination and thus appears to be superior to any direct approach based on the computation of Smith forms.