New Results on Oscillation of even Order Neutral Differential Equations with Deviating Arguments
نویسندگان
چکیده
x T t . A nontrivial solution of Equation (1) is called oscillatory if it has arbitrarily large zeros, otherwise it is said to be nonoscillatory. Equation (1) is said to be oscillatory if all of it’s nontrivial solutions are oscillatory. Recently, Meng and Xu [6] studied Equation (1) and obtained some sufficient conditions for oscillation of the Equation (1), we list the main results of [6] as follows. Following Philos [5], we say that a function , H H t s belongs to a function class W , denotes by H W , if , H C D R , where 0 , : D t s t s t , which satisfies: (H1) , 0 H t t and , 0 H t s for
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تاریخ انتشار 2011