Class D4a7 ... Sparse matrix eigenvalue problems

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Modules for class D4a7

• UNDERWOOD Solves sparse symmetric eigenproblems using the iterative block Lanczos method. ...

• DILASO (SILASO) Computes all the eigenvalues and eigenvectors of a large sparse symmetric matrix ...
• DNLASO (SNLASO) Computes a few eigenvalues and eigenvectors at one end of the spectrum of a larg ...
• SILASO (DILASO) Computes all the eigenvalues and eigenvectors of a large sparse symmetric matrix ...
• SNLASO (DNLASO) Computes a few eigenvalues and eigenvectors at one end of the spectrum of a larg ...

• QMRPACK Solves nonsingular nonsymmetric systems of linear equations and certain singular ...

• F02FJF Finds eigenvalues and eigenvectors of a real sparse symmetric or generalised sym ...

• CPOWER Computes the eigenvalue of largest magnitude of a complex matrix, with its corre ...
• MPOWER Computes several eigenvalues of a matrix with corresponding eigenvectors, using ...
• POWER Computes one or two eigenvalues of largest magnitude of a matrix, with correspon ...

• ARPACK Solves standard or generalized, real or complex, symmetric or nonsymmetric, spar ...
• PARPACK Parallel version of ARPACK based on BLACS and MPI. Solves standard or generalize ...

• 570 LOPSI: a Fortran subprogram which determines approximations to right or left eig ...
• 776 SRRIT: Calculates the dominant invariant subspace of a nonsymmetric matrix. Desi ...
• 827 Irbleigs: Computation of eigenvalues and eigenvectors of a sparse Hermitian matr ...