Abstract
In this article, by using nonlinear Leray-Schauder-type alternative and Banach's fixed point theorem, we investigate existence and uniqueness of solutions. We also prove Hyers-Ulam stability for the proposed coupled system of fractional differential equations (FDEs) with the nonlinear p-Laplacian operator and Riemann-Liouville integral boundary conditions (IBCs). An illustrative example is presented to demonstrate our main results.