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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) References ---------- .. [1] ARPACK Software, http://www.caam.rice.edu/software/ARPACK/ .. [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 .arpack import *