摘要

In this paper, we study the existence of an S-asymptotically omega-periodic mild solution of semilinear fractional integro-differential equations in Banach space, where the nonlinear perturbation is S-asymptotically omega-periodic or S-asymptotically omega-periodic in the Stepanov sense. A fixed point theorem and the nonlinear Leray-Schauder alternative theorem are the main tools in carrying out our proof. Some examples are given to show the efficiency and usefulness of the main findings.