Z-Numbers
摘要
To make a decision to select a suitable approximation for the solution of a functional inequality, we need reliable information. Two useful information ideas are quality and certainty, and the measure of quality and certainty approximation of the solution of a functional inequality helps us to find the optimum approximation. We define a new control function to approximate a stochastic fractional Volterra IDE using the concept of modular stability. Also, we apply Hyers–Ulam- \(\mathcal {H}\) -Fox (HU- \(\mathcal {H}\) -F) stability of Generalized Fractional Systems.