Oscillation theorems for differential equations with a nonlinear damping term

Abstract

In this paper, we are concerned with a class of nonlinear second-order differential equations with a nonlinear damping term. Passage to more general class of equations allows us to remove a restrictive condition usually imposed on the nonlinearity, and, as a consequence, our results apply to wider classes of nonlinear differential equations. Two illustrative examples are considered. (C) 2003 Elsevier Science (USA). All rights reserved.