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Eigenvalue solver using iterative methods.
Find k eigenvectors and eigenvalues of a matrix A using the
Arnoldi/Lanczos iterative methods from ARPACK [1]_,[2]_.
These methods are most useful for large sparse matrices.
- eigs(A,k)
- eigsh(A,k)
.. [1] ARPACK Software,
.. [2] R. B. Lehoucq, D. C. Sorensen, and C. Yang, ARPACK USERS GUIDE:
Solution of Large Scale Eigenvalue Problems by Implicitly Restarted
Arnoldi Methods. SIAM, Philadelphia, PA, 1998.
from __future__ import division, print_function, absolute_import
from .arpack import *