Directory of Eigenvalues Resources

Home > Computers > Programming > Languages > Fortran > Source Code > Linear Algebra > Eigenvalues

Fortran codes to compute eigenvalues and eigenfunctions.

Resources in This Category

• ARPACK

  ftp://ftp.caam.rice.edu/pub/people/sorensen/ARPACK
  Package for large-scale eigenvalue problems.

• EISPACK

  http://www.netlib.org/eispack/
  A collection of Fortran subroutines that compute the eigenvalues and eigenvectors of nine classes of matrices: complex general, complex Hermitian, real general, real symmetric, real symmetric banded, real symmetric tridiagonal, special real tridiagonal, generalized real, and generalized real symmetric matices. In addition, two routines are included that use singular value decomposition to solve certain least-squares problems.

• Lanczos

  http://www.netlib.org/lanczos/index.html
  Codes to compute eigenvalues and eigenvectors using the Lanczos algorithm.

• Lanz

  http://www.netlib.org/lanz/index.html
  Solves the large, sparse, symmetric generalized eigenproblem.

• Laso

  http://www.netlib.org/laso/index.html
  Fortran IV subroutines for computing a few eigenvalues of a large (sparse) symmetric matrix.

• SLEIGN2

  http://www.math.niu.edu/SL2/
  Code to compute eigenvalues and eigenfunctions of regular and singular self-adjoint Sturm-Liouville problems.

 

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