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Mathematical Communications, Vol.15 No.1 June 2010. -

Using a fine accuracy analysis and the results from

\cite{har-mat-09}, a new accurate algorithm for computing the

singular value decomposition of 2 by 2 triangular matrices is

constructed. It is obtained by combining the new algorithm which is

derived in \cite{har-mat-09} and the algorithm which is coded as an

xLASV2 computational routine of LAPACK. Relative error bounds

for the output data of the hybrid algorithm are equal to or smaller

than the same bounds for any of these two algorithms.

triangular matrix of order two; SVD algorithm; error analysis; accuracy

Autor: Josip Matejaš - ; aculty of Economics and Business,University of Zagreb, Zagreb, Croatia



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