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handle: 11104/0116290
In the theory of autonomous perturbations of periodic solutions of ordinary differential equations the method of the Poincare mapping has been widely used. For the analysis of properties of this mapping in the case of two-dimensional systems, a result first obtained probably by Diliberto in 1950 is sometimes used. In the paper, this result is (partially) extended to a certain class of autonomous ordinary differential equations of higher dimension.
moving orthogonal system, variational equation, Poincaré mapping
moving orthogonal system, variational equation, Poincaré mapping
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