The oscillatory behavior of second order nonlinear elliptic equations.
Xu, Zhiting (2005)
Electronic Journal of Qualitative Theory of Differential Equations [electronic only]
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Xu, Zhiting (2005)
Electronic Journal of Qualitative Theory of Differential Equations [electronic only]
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Xu, Zhiting (2006)
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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.