Computer algebra in the theory of ordinary differential equations of Halphen type
Proceedings of the third conference on Computers and mathematics
Towards factoring bivariate approximate polynomials
Proceedings of the 2001 international symposium on Symbolic and algebraic computation
Closed form solutions of linear odes having elliptic function coefficients
ISSAC '04 Proceedings of the 2004 international symposium on Symbolic and algebraic computation
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We present an algorithm for finding closed form solutions in elliptic functions of completely integrable systems. First we solve the linear differential equations in spectral parameter of Hermite-Halphen type. The integrability condition of the pair of equations of Hermite-Halphen type gives the large family of completely integrable systems of Lax-Novikov type. This algorithm is implemented on the basis of the computer algebra system MAPLE. Many examples, such as vector nonlinear Schödinger equation, optical cascaded equations and restricted three wave system are considered. New solutions for optical cascaded equations are presented. The algorithm for linear ODE's with elliptic functions coefficients is generalized to 2 × 2 matrix equations with elliptic coefficients.