Ulam's type stability of higher order nonlinear delay differential equations via integral inequality of Gronwall-Bellman-Bihari's type

Abstract

In this paper, we prove the Hyers-Ulam stability and the Hyers-Ulam-Rassias stability of a class of higher order nonlinear delay differential equations with multiple bounded variable delays on a compact interval. Result of existence and uniqueness of solution is obtained by fixed point approach. Meanwhile, for the first time, integral inequality of Gronwall-Bellman-Bihari's type with delay is applied to prove the stability theorem which made our results more generalized and interesting. (C) 2019 Elsevier Inc. All rights reserved.