An efficient numerical algorithm for solving nonlinear Volterra integral equations in the reproducing kernel space

The main purpose of this paper is to approximate the solution of the nonlinear Volterra integral equation numerically in the reproducing kernel space. Consequently, in the study, combining Quasi-Newton's method and the least-square method, we develop a new method for solving this kind of equation. This technique transforms the non-linear Volterra integral equation into a linear algebraic system of equations, which can be solved by using the least-square method breezily. At the same time, to ensure the preciseness of the method, we strictly analyze the existence and uniqueness of e-approximate solution and its convergence. Finally, we illustrate the accuracy and reliability of this method by giving some examples.