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arXiv · 2504.01322

Biological network dynamics: Poincar\'e-Lindstedt series and the effect of delays

Renato Calleja·Pablo Padilla-Longoria·Edgar Rodríguez-Mendieta
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Abstract

This paper focuses on the Hopf bifurcation in an activator-inhibitor system without diffusion which can be modeled as a delay differential equation. The main result of this paper is the existence of the Poincar\'e-Lindstedt series to all orders for the bifurcating periodic solutions. The model has a non-linearity which is non-polynomial, and yet this allows us to exploit the use of Fourier-Taylor series to develop order-by-order calculations that lead to linear recurrence equations for the coefficients of the Poincar\'e-Lindstedt series. As applications, we implement the computation of the coefficients of these series for any finite order, and use a pseudo-arclength continuation to compute branches of periodic solutions.

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Renato Calleja, Pablo Padilla-Longoria, Edgar Rodríguez-Mendieta. 2025-04-02. Biological network dynamics: Poincar\'e-Lindstedt series and the effect of delays. https://arxiv.org/abs/2504.01322

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