Rational general solutions of algebraic ordinary differential equations

Authors:
Ruyong Feng;Xiao-shan Gao
Affiliations:
Key Laboratory of Mathematics Mechanization Institute of Systems Science, Beijing, China;Key Laboratory of Mathematics Mechanization Institute of Systems Science, Beijing, China
Venue:
ISSAC '04 Proceedings of the 2004 international symposium on Symbolic and algebraic computation
Year:
2004

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Abstract

We give a necessary and sufficient condition for an algebraic ODE to have a rational type general solution. For an autonomous first order ODE, we give an algorithm to compute a rational general solution if it exists. The algorithm is based on the relation between rational solutions of the first order ODE and rational parametrizations of the plane algebraic curve defined by the first order ODE and Padé approximants.