Table of Contents
ISRN Applied Mathematics
Volume 2014, Article ID 641706, 5 pages
Research Article

Improved Qrginv Algorithm for Computing Moore-Penrose Inverse Matrices

Mathematics Department, Persian Gulf University, Bushehr 75169, Iran

Received 24 January 2014; Accepted 17 February 2014; Published 12 March 2014

Academic Editors: M. Hermann and M.-H. Hsu

Copyright © 2014 Alireza Ataei. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Katsikis et al. presented a computational method in order to calculate the Moore-Penrose inverse of an arbitrary matrix (including singular and rectangular) (2011). In this paper, an improved version of this method is presented for computing the pseudo inverse of an real matrix A with rank . Numerical experiments show that the resulting pseudoinverse matrix is reasonably accurate and its computation time is significantly less than that obtained by Katsikis et al.