“…This equation appears in different fields of pure and applied mathematics such as number theory, dynamical systems, probability, quantum mechanics, etc. Recently, in [2], the authors considered the fractional version of the pantograph equation, namely (2) D α 0 + u(t) = g t, u(t), u(λt) , t ∈ J = [0, T ], u(0) = u 0 , where α, λ ∈ (0, 1). The Banach contraction principle was the main tool used in this study.…”