A new method for solving three-dimensional nonlinear Fredholm integral equations by Haar wavelet

Document Type : Research Paper


1 Department of Mathematics, Ashtian Branch, Islamic Azad University, Ashtian, Iran

2 Department of Mathematics, Farhangian University, Tehran, Iran. Member of Young Researchers and Elite club Shahr-e-Qods, Branch Islamic Azad University, Tehran, Iran

3 Department of Mathematics, Karaj Branch, Islamic Azad University, Karaj, Iran


In this paper, a new iterative method of successive approximations based on Haar wavelets is proposed for solving three-dimensional nonlinear Fredholm integral equations. The convergence of the method is verified. The error estimation and numerical stability of the proposed method are provided in terms of Lipschitz condition. Conducting numerical experiments confirm the theoretical results of the proposed method and endorse the accuracy of the method.


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Volume 12, Issue 2
November 2021
Pages 115-133
  • Receive Date: 12 July 2020
  • Revise Date: 16 August 2020
  • Accept Date: 28 September 2020