Razumikhin Stability Theorem for Fractional Systems with Delay

Fractional calculus techniques and methods started to be applied successfully during the last decades in several fields of science and engineering. In this paper we studied the stability of fractional‐order nonlinear time‐delay systems for Riemann‐Liouville and Caputo derivatives and we extended Razumikhin theorem for the fractional nonlinear time‐delay systems.