Stability in neutral nonlinear differential equations with functional delays using fixed-point theory
We use fixed-point theorems to obtain stability results about the zero solution of the nonlinear neutral differential equation with functional delay, x' (t) = -a (t) x (t) + c (t) x' (t - g (t)) + q (x (t), x (t - g (t)). (C) 2004 Elsevier Ltd. All rights reserved.
nonlinear neutral differential equation contraction mapping integral equation asymptotic stability