Hi, Has anyone written some functions concerning the matrix exponential expm(A) ? I am looking for demos illustrating the use of Padé approximation, Taylor series approximation, and eigenvalues and eigenvectors, respectively, to compute the matrix exponential. Thanks in advance. Nils Reference : SIAM Review, Vol. 20 (1979) pp.801-836 Moler, van Loan "Nineteen dubious ways to compute the exponential of a matrix"