On Existence and Uniqueness of Formal Power Series Solutions of Algebraic Ordinary Differential Equations

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作者
Sebastian Falkensteiner
Yi Zhang
Thieu N. Vo
机构
[1] Johannes Kepler University,Research Institute for Symbolic Computation (RISC)
[2] Xi’an Jiaotong-Liverpool University,Department of Applied Mathematics, School of Science
[3] Ton Duc Thang University,Fractional Calculus, Optimization and Algebra Research Group, Faculty of Mathematics and Statistics
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Formal power series; algebraic differential equation; 34A05; 34A09; 68W30;
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摘要
Given an algebraic ordinary differential equation (AODE), we propose a computational method to determine when a truncated power series can be extended to a formal power series solution. If a certain regularity condition on the given AODE or on the initial values is fulfilled, we compute all of the solutions. Moreover, when the existence is confirmed, we present the algebraic structure of the set of all formal power series solutions.
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