LANSO (simple LANczos with Selective Orthogonalization) is a subroutine package written in FORTRAN 77 that is designed to find some eigenvalues and eigenvectors of a linear operator Op that is real-symmetric with respect to a positive semidefinite real matrix M. M may be the identity matrix.
Documentation Included with the Program:
- User's Guide (includes Installation Notes). Available separately for $2.50
Foreign Distribution: Yes