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Oscillation Criteria for Certain Fourth-Order Nonlinear Delay Differential Equations

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Abstract

In this article, we establish some new criteria for the oscillation of fourth-order nonlinear delay differential equations of the form

$$(r_2(t)(r_1(t)(y''(t))^\alpha)')' + p(t)(y''(t))^\alpha + q(t)f(y(g(t))) = 0$$

provided that the second-order equation

$$(r_2(t)z'(t))') + \frac{p(t)}{r_1(t)}z(t) = 0$$

is nonoscillatory or oscillatory.

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Correspondence to Shurong Sun.

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This research is supported by the Natural Science Foundation of China (61374074, 61374002), Natural Science Outstanding Youth Foundation of Shandong Province (JQ201119) and supported by Shandong Provincial Natural Science Foundation (ZR2012AM009, ZR2013AL003).

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Grace, S.R., Sun, S. & Akın, E. Oscillation Criteria for Certain Fourth-Order Nonlinear Delay Differential Equations. Mediterr. J. Math. 13, 2383–2396 (2016). https://doi.org/10.1007/s00009-015-0630-3

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  • DOI: https://doi.org/10.1007/s00009-015-0630-3

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