2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/188662We consider a nonlinear integral equation with infinitely many derivatives that appears when a system of interacting open and closed strings is investigated if the nonlocality in the closed string sector is neglected. We investigate the properties of this equation, construct an iterative method for solving it, and prove that the method converges.11 pages, 2 figuresMathematical PhysicsHigh Energy Physics - Theorytext