A necessary and sufficient condition for the oscillation in a class of even order neutral differential equations.
Tanaka, Satoshi (2000)
Electronic Journal of Qualitative Theory of Differential Equations [electronic only]
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Tanaka, Satoshi (2000)
Electronic Journal of Qualitative Theory of Differential Equations [electronic only]
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Qi Gui Yang, Sui-Sun Cheng (2007)
Archivum Mathematicum
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This paper is concerned with a class of even order nonlinear differential equations of the form where is even and . By using the generalized Riccati transformation and the averaging technique, new oscillation criteria are obtained which are either extensions of or complementary to a number of existing results. Our results are more general and sharper than some previous results even for second order equations.
Eva Špániková (2004)
Archivum Mathematicum
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We study oscillatory properties of solutions of the systems of differential equations of neutral type.
Blanka Baculíková (2006)
Archivum Mathematicum
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Our aim in this paper is to present criteria for oscillation of the nonlinear differential equation The obtained oscillatory criteria improve existing ones.