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Oscillation of certain functional-differential equations. (English) Zbl 0935.34059

Summary: The authors establish some new criteria for the oscillation of functional-differential equations of the form \[ x^{(n)}(t)+ (-1)^nF \Biggl(t, x(g(t)), {d\over dt} x(h(t)) \Biggr)= 0 \] via comparing it with some other functional-differential equations of the same or lower order whose oscillatory behavior is known.

MSC:

34K11 Oscillation theory of functional-differential equations
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