## The oscillation of certain higher-order functional differential equations.(English)Zbl 1070.34083

Oscillation criteria are established for functional-differential equations of the general form $\begin{split}(d/(dt))([(1/(a_{n-1}(t)))(d/(dt))(1/(a_{n-2}(t)))(d/(dt))\\ \dots(1/(a(t)))(d/(dt))x(t)]^{\alpha})+q(t)f(x[g(t)])=0,\end{split}$ where $$n$$ is even.

### MSC:

 34K11 Oscillation theory of functional-differential equations

### Keywords:

oscillation; nonoscillation; comparison; half-linear; linearization
Full Text:

### References:

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