commutation.matrix      Commutation matrix for m by n numeric matrices
duplication.matrix      Duplication matrix for n by n matrices
elimination.matrix      Elimination matrix for lower triangular
                        matrices
frobenius.prod          Frobenius innter product of matrices
hadamard.prod           Hadamard product of two matrices
hilbert.matrix          Hilbert matrices
inverse                 Inverse of a square matrix
is.numeric.matrix       Determine if argument is a numeric matrix
is.positive.definite    Test matrix for positive definiteness
is.square.matrix        Test for square matrix
is.symmetric.matrix     Test for symmetric numeric matrix
lower.triangle          Lower triangle portion of a matrix
matrix.rank             Rank of a square matrix
matrix.trace            The trace of a matrix
pascal.matrix           Pascal matrix
set.submatrix           Store matrix inside another matrix
shift.down              Shift matrix m rows down
shift.left              Shift a matrix n columns to the left
shift.right             Shift matrix n columns to the right
shift.up                Shift matrix m rows up
upper.triangle          Upper triangle portion of a matrix
vandermonde.matrix      Vandermonde matrix
vec                     Vectorize a matrix
vech                    Vectorize a matrix
