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A correction on the oscillatory behavior of solutions of certain second order nonlinear differential equations. (English) Zbl 0937.34027
The authors provide certain oscillatory results for nonlinear differential equations of the form $[a(t)(y'(t))^\sigma]'+q(t)f(y(t))=r(t)$ and the special case that $$r(t)=0$$, i.e. $[a(t)(y'(t))^\sigma]'+q(t)f(y(t))=0.$ They correct a result by P. J. Y. Wong and R. P. Agarwal [J. Math. Anal. Appl. 198, No. 2, 337-354, (1996; Zbl 0855.34039)].

##### MSC:
 34C10 Oscillation theory, zeros, disconjugacy and comparison theory for ordinary differential equations
##### Keywords:
oscillation theory; nonlinear equation
Full Text:
##### References:
 [1] Wong, P.J.Y.; Agarwal, R.P., Oscillatory behavior of solutions of certain second order nonlinear differential equations, J. math. anal. appl., 198, 337-354, (1996) · Zbl 0855.34039
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