ARPACK(3)                      MathKeisan ARPACK                     ARPACK(3)



NAME
       ARnoldi PACKage    (ARPACK)

DESCRIPTION
       ARPACK  is  a  collection  of  Fortran 77 subroutines designed to solve
       large-scale eigenvalue problems.  ARPACK stands  for  ARnoldi  PACKage.
       It  is capable of solving large-scale symmetric(Hermitian), non-symmet-
       ric (non-Hermitian), standard, or generalized eigenvalue problems  from
       significant  application areas.  The ARPACK library is designed to com-
       pute a few, say k, eigenvalues with  user-specified  features  such  as
       those  of  largest real part or largest magnitude using n*O(k) + O(k*k)
       storage.  No auxiliary storage is required.  A set of Schur basis  vec-
       tors  for  the  desired  k-dimensional  eigenspace is computed which is
       numerically orthogonal to working  precision.   Eigenvectors  are  also
       available  upon  request.  ARPACK is dependent upon a number of subrou-
       tines from LAPACK and BLAS.  The performance scales  asymptotically  to
       the Level 2 BLAS operation GEMV.

       The  ARPACK  in  MathKeisan is based on the original version written by
       Rich Lehoucq, Kristi Maschhoff, Danny Sorensen and Chao Yang (Rice Uni-
       versity).

       More information on ARPACK is available at:

              http://www.caam.rice.edu/software/ARPACK/

       The html version of the ARPACK Users' Guide is available at:

              http://www.caam.rice.edu/software/ARPACK/UG/ug.html

       The  printed  version of the ARPACK Users' Guide is available from SIAM
       (Society for Industrial and Applied Mathematics) (ISBN  0-89871-407-9).

       If you have any problems with this library, please contact us at:

              http://www.mathkeisan.com/

SEE ALSO
       mathkeisan(3), MathKeisan User's Guide at:

              http://www.mathkeisan.com/

       The command:

              man mathkeisan

       gives more information on linking.



MathKeisan                                                           ARPACK(3)