Tripled fixed points and existence study to a tripled impulsive fractional differential system via measures of noncompactness

In this paper, a tripled fractional differential system is introduced as three associated impulsive equations. The existence investigation of the solution is based on contraction principle and measures of noncompactness in terms of tripled fixed point and modulus of continuity. Our results are valid for both Kuratowski and Hausdorff measures of noncompactness. As an application, we apply the obtained results to a control problem. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.