Computation of generalized inverses using PHP/MySQL environment

The main aim of this paper is to develop a client/server based model for computing the weighted Moore-Penrose inverse using the partitioning method as well as for storage of generated results. The web application is developed in the PHP/MySQL environment. The source code is open and free for testing by using a Web browser. Influence of different matrix representations and storage systems on the computational time is investigated. The CPU time for searching the previously stored pseudo-inverses is compared with the CPU time spent for new computation of the same inverses. AMS Subj. Class.: 15A09, 68P15, 68N15.