Eigen_Hessenberg        Hessenberg decomposition
Eigen_QR                QR decomposition of a matrix
Eigen_UtDU              'UtDU' decomposition of a matrix
Eigen_absdet            Absolute value of the determinant
Eigen_chol              Cholesky decomposition of a matrix
Eigen_complexSchur      Complex Schur decomposition
Eigen_cos               Matrix cosine
Eigen_cosh              Matrix hyperbolic cosine
Eigen_det               Determinant of a matrix
Eigen_exp               Exponential of a matrix
Eigen_inverse           Inverse of a matrix
Eigen_isInjective       Check injectivity
Eigen_isInvertible      Check invertibility
Eigen_isSurjective      Check surjectivity
Eigen_kernel            Kernel of a matrix
Eigen_kernelDimension   Dimension of kernel
Eigen_log               Logarithm of a matrix
Eigen_logabsdet         Logarithm of the absolute value of the
                        determinant
Eigen_lsSolve           Linear least-squares problems
Eigen_pinverse          Pseudo-inverse of a matrix
Eigen_pow               Matricial power
Eigen_range             Range of a matrix
Eigen_rank              Rank of a matrix
Eigen_realSchur         Real Schur decomposition
Eigen_sin               Matrix sine
Eigen_sinh              Matrix hyperbolic sine
Eigen_sqrt              Square root of a matrix
SparseMatrix            Sparse matrix
