Nonoscillation theorems for functional differential equations of arbitrary order
John R. Graef,1Myron K. Grammatikopoulos,2Yuichi Kitamura,3Takasi Kusano,4Hiroshi Onose,5and Paul W. Spikes6
Received20 May 1983
Abstract
The authors give sufficient conditions for all oscillatory solutions of a sublinear forced higher order nonlinear functional differential equation to converge to zero. They then prove a nonoscillation theorem for such equations. A few intermediate results are also obtained.
