Journal of East China Normal University(Natural Sc ›› 2012, Vol. 2012 ›› Issue (1): 113-120.

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Oscillations of a class of third order nonlinear neutral functional differential

HAN Zhong-yue   

  1. Department of Mathematics, Dezhou University, Dezhou Shandong 253023,  China
  • Received:2011-03-01 Revised:2011-06-01 Online:2012-01-25 Published:2012-01-26

Abstract: The oscillations of a class of third order nonlinear neutral functional differential equations was discussed, by using the generalized Riccati transformation and the integral averaging technique; and some new  sufficient conditions for oscillations or tends to zero of all solutions of the equations were obtained. The
example  to illustrate the main results were given. The results extend and improve some known results.

Key words: third order neutral differential equation, oscillation criteria, Kamenev type, Philos type

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