On numerical solution of two-dimensional nonlinear Urysohn fuzzy integral equations based on fuzzy Haar wavelets

In the present paper, using fuzzy Haar wavelets, we introduce an iterative method for numerical solving two-dimensional nonlinear Urysohn fuzzy integral equations (2DNUFIE). We define a useful metric to prove the convergence and error estimate of the method. Moreover, we investigate the numerical stability of the presented numerical successive approximations. Finally, numerical experiments show the accuracy of the method.