Browsing by Author "Kontos, Athanassios"
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Item An Algorithm to Factor Polynomial Matrices(1979-04-01) Kontos, AthanassiosA 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.Item APL Programs for Polynomial Matrix Manipulations(1979-12-01) Kontos, AthanassiosThis report contains descriptions and listings of APL programs.Item APL Programs for Singular Value Decomposition and Generalized Eigenvalue Problems(1979-09-20) Kontos, Athanassios; Moore, RobertThis report contains descriptions and listings of APL functions for singular value decomposition and solution of the generalized eigenvalue problem.Item 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.