Electronic Journal of Differential Equations, Vol. 2021 (2021), No. 64, pp. 1-19. Title: Sensitivity of a nonlinear ordinary BVP with fractional Dirichlet-Laplace operator Author: Dariusz Idczak (Univ. of Lodz, Poland) Abstract: In this article, we derive a sensitivity result for a nonlinear fractional ordinary elliptic system on a bounded interval with Dirichlet boundary conditions. More precisely, using a global implicit function theorem, we show that for each functional parameter there exists a unique solution, and that its dependence on the functional parameters is continuously differentiable. Submitted July 19, 2020. Published July 12, 2021. Math Subject Classifications: 34B15, 34A08, 34B08, 34L05. Key Words: Fractional Dirichlet-Laplace operator; Palais-Smale condition; Stone-von Neumann operator calculus; global implicit function theorem.