Nonlinear Hammerstein equations and functions of bounded Riesz-Medvedev variation

Abstract

In this paper we study the solvability of a nonlinear Hammerstein type integral equation in the space of functions of bounded Riesz-Medvedev variation. To this end, we derive a compactness criterion and apply Schauder's fixed point theorem to a suitable operator whose fixed points coincide with the solutions of the integral equation.