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Bibliographic Details
Main Authors: Zhao, Hefei, Tian, Yun
Format: Preprint
Published: 2026
Subjects:
Online Access:https://arxiv.org/abs/2605.02145
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Table of Contents:
  • In this paper, we explicitly obtain inhomogeneous Picard-Fuchs equations for Abelian integrals $I_{i,j}^+(h)$, where $I_{i,j}^+(h)$ is an integral along orbital arcs defined by polynomials $\frac{1}{2}y^2 + F(x)=h$. Moreover, we discuss the method of using Picard-Fuchs equations to recursively compute the asymptotic expansions of genearating functions of Abelian integrals near a homoclinic loop. As an application, we derive the maximum number of isolated zeros of Melnikov functions near a nilpotent saddle homoclinic loop for piecewise polynomials perturbations with the inclination $θ$ of the separation line as a free parameter.