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Oscillation theorems for certain second order perturbed nonlinear differential equations. (English) Zbl 0443.34031


MSC:

34C10 Oscillation theory, zeros, disconjugacy and comparison theory for ordinary differential equations
34A34 Nonlinear ordinary differential equations and systems
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References:

[1] Coles, W. J., A nonlinear oscillation theorem, (International Conference of Differential Equations (1975), Academic Press: Academic Press New York), 193-202 · Zbl 0334.34041
[2] Graef, J. R.; Rankin, S. M.; Spikes, P. W., Oscillation theorems for perturbed nonlinear differential equations, J. Math. Anal. Appl., 65, 375-390 (1978) · Zbl 0405.34035
[3] Kamenev, I. V., Oscillation of solutions of second order nonlinear equations with sign variable coefficients, Differencial’nye Uravnija, 6, 1718-1721 (1970)
[4] Kartsatos, A. G.; Toro, J., Comparison and Oscillation theorems for equations with middle term of order \(n\) − 1, J. Math. Anal. Appl., 66, 297-312 (1978) · Zbl 0387.34027
[5] Onose, H., Oscillation of nonlinear second order equations, J. Math. Anal. Appl., 39, 122-124 (1972) · Zbl 0268.34042
[6] Wong, J. S., On second order nonlinear oscillation, Funkcial. Ekvac, 11, 207-234 (1968) · Zbl 0184.12202
[7] Wong, J. S., Oscillation theorems for second order nonlinear D.E., Bull. Inst. Math. Acad. Sinica, 3, No. 2 (Dec. 1975)
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