In this article, we establish some new criteria for the oscillation of fourth order nonlinear delay differential equations of the form (Equation presented) provided that the second order equation (Equation presented) is nonoscillatiory or oscillatory. This equation with g(t) = t is considered in  and some oscillation criteria for this equation via certain energy functions are established. Here, we continue the study on the oscillatory behavior of this equation via some inequalities.
S. R. Grace and E. Akin, "Oscillation Criteria for Fourth Order Nonlinear Positive Delay Differential Equations with a Middle Term," Dynamic Systems and Applications, vol. 25, no. 3, pp. 431-438, Dynamic Publishers, Jan 2016.
Mathematics and Statistics
Keywords and Phrases
Delay; Differential equations; Higher order; Oscillation
International Standard Serial Number (ISSN)
Article - Journal
01 Jan 2016