On the oscillation for third-order nonlinear neutral delay dynamic equations on time scales

Abstract

In this paper, we consider the third-order nonlinear neutral delay dynamic equations $$\begin{aligned} \left( b(t)\left( \left( ((x(t)-p(t)x(\tau (t)))^\Delta )^{\alpha _1}\right) ^\Delta \right) ^{\alpha _2}\right) ^\Delta +f(t,x(\delta (t)))=0 \end{aligned}$$ on a time scale \(\mathbb {T}\), where \(\alpha _i\) are quotients of positive odd integers, \(i=1\), 2, \(|f(t,u)|\ge q(t)|u|\), \(b,\ p\) and q are real-valued positive rd-continuous functions defined on \(\mathbb {T}\). By using the Riccati transformation technique and integral averaging technique, some new sufficient conditions which ensure that every solution oscillates or tends to zero are established. Our results are new for third-order nonlinear neutral delay dynamic equations and extend many known results for oscillation of third order dynamic equations. Some examples are given here to illustrate our main results.