Approximate diagonalization in differential systems and an effective algorithm for the computation of the spectral matrix
B. M. Brown, M. S. P. Eastham, D. K. R. McCormack, W. D. Evans
Abstract
This paper reports on recent work to compute the asymptotic solution of a n-th order ordinary differential equation. Symbolic methods are used to compute the asymptotics over a large region. Application is made to the computation of the Titchmarsh-Weyl M-matrix for the fourth order operator.
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