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arXiv · 2109.12570

Interplay between normal forms and center manifold reduction for homoclinic predictors near Bogdanov-Takens bifurcation

Maikel M. Bosschaert·Yuri A. Kuznetsov
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Abstract

This paper provides for the first time correct third-order homoclinic predictors in $n$-dimensional ODEs near a generic Bogdanov-Takens bifurcation point. To achieve this, higher-order time approximations to the nonlinear time transformation in the Lindstedt-Poincar\'e method are essential. Moreover, a correct transform between approximations to solutions in the normal form and approximations to solutions on the parameter-dependent center manifold is needed. A detailed comparison is done between applying different normal forms (smooth and orbital), different phase conditions, and different perturbation methods (regular and Lindstedt-Poincar\'e) to approximate the homoclinic solution near Bogdanov-Takens points. Examples demonstrating the correctness of the predictors are given. The new homoclinic predictors are implemented in the open-source MATLAB/GNU Octave continuation package MatCont.

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Maikel M. Bosschaert, Yuri A. Kuznetsov. 2021-09-26. Interplay between normal forms and center manifold reduction for homoclinic predictors near Bogdanov-Takens bifurcation. https://arxiv.org/abs/2109.12570

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