COMi ’ UTATlON OF THE - PSEUDOINVERSE OF , A MATRIX OF UNKNOWN RANK

-.m. , A program is described which computes the pseudoinverse, and oth:'3r related quantities, of an m X n matrix A of unknown rank. The program obtains least square solutions to singular and/or inconsistent linear systems Ax = B, where m 5 n or m > n and the rank of A ma.y be less than min(m,n). A complete description of the program and its use is given, including computational experience on a variety of problems0 -/ * On leave from Dept. of Mathematics and Computation Center, Buenos Aires University, Argentina. Reproduction in Whole or in part is Permitted for any Purpose of the United States Government. Prepared under NASA Grant Ns G 565 at Stanford University. Stanford California i