Multi-Effective Collocation Methods for Solving the Volterra Integral Equation with Highly Oscillatory Fourier Kernels

Jianyu Wang (), Chunhua Fang () and Guifeng Zhang
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Jianyu Wang: College of Mathematics, Hunan Institute of Science and Technology, Yueyang 414006, China
Chunhua Fang: College of Mathematics, Hunan Institute of Science and Technology, Yueyang 414006, China
Guifeng Zhang: College of Mathematics, Hunan Institute of Science and Technology, Yueyang 414006, China

Mathematics, 2023, vol. 11, issue 20, 1-19

Abstract: In this paper, we focus on the numerical solution of the second kind of Volterra integral equation with a highly oscillatory Fourier kernel. Based on the calculation of the modified moments, we propose four collocation methods to solve the equations: direct linear interpolation, direct higher order interpolation, direct Hermite interpolation and piecewise Hermite interpolation. These four methods are simple to construct and can quickly compute highly oscillatory integrals involving Fourier functions. We present the corresponding error analysis and it is easy to see that, in some cases, our proposed method has a fast convergence rate in solving such equations. In some cases, our proposed methods have significant advantages over the existing methods. Some numerical experiments demonstrating the efficiency of the four methods are also presented.

Keywords: highly oscillatory kernel; Volterra integral equation; Fourier transforms (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2023
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