The geigen package provides functions to compute the generalized eigenvalues of a pair of matrices and optionally provides the generalized eigenvectors. Both numeric and complex matrices are allowed. The package also provides a function for computing the generalized Schur decomposition of a pair of matrices, either numeric or complex. Finally the package provides a function for computing the generalized singular value decomposition for a pair of matrices, either numeric or complex. The package uses routines provided by the Lapack linear algebra package.
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