Almost periodic solutions for a class of fourth-order nonlinear differential equations with a deviating argument
This paper considers the fourth-order nonlinear differential equations with a deviating argument. Sufficient conditions for the existence and exponential stability of the almost periodic solutions are established, which are new and complement previously known results. (C) 2010 Elsevier Ltd. All rights reserved.
almost periodic solutions deviating argument exponential stability four-order nonlinear differential equation