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Oscillation Criteria for Certain Fourth-Order Nonlinear Delay Differential Equations |
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| Authors: | Said R Grace Shurong Sun Elvan Akın |
| Institution: | 1.Department of Engineering Mathematics, Faculty of Engineering,Cairo University,Orman,Egypt;2.School of Mathematical Sciences,University of Jinan,Jinan,People’s Republic of China;3.Department of Mathematics and Statistics,Missouri University of Science and Technology,Rolla,USA |
| Abstract: | In this article, we establish some new criteria for the oscillation of fourth-order nonlinear delay differential equations of the form $$(r_2(t)(r_1(t)(y''(t))^\alpha)')' + p(t)(y''(t))^\alpha + q(t)f(y(g(t))) = 0$$ $$(r_2(t)z'(t))') + \frac{p(t)}{r_1(t)}z(t) = 0$$ |
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