Oscillation criteria for second order differential equations with positive and negative coefficients
Oscillation criteria for second order differential equations with positive and negative coefficients
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DOI：
10.1016/j.amc.2006.02.015
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发表时间：
2006-10
期刊：
影响因子：
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通讯作者：
J. Manojlovic;Y. Shoukaku;T. Tanigawa;N. Yoshida
中科院分区：
文献类型：
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作者：
J. Manojlovic;Y. Shoukaku;T. Tanigawa;N. Yoshida
建立了二阶中立型时滞微分方程解的几个振动准则。新的振动准则不同于最近建立的振动准则，在Parhi和Chand[具有正负系数的二阶中立型时滞微分方程解的振动性，J.Indian Math]结果的意义下，解的有界性。Soc.，66(1999)227-235。]即我们给出了所有解振动的充分条件。
Some oscillation criteria for the second order neutral delay differential equationsare established. New oscillation criteria are different from one recently established in the sense that the boundedness of the solution in the results of Parhi and Chand [Oscillation of second order neutral delay differential equations with positive and negative coefficients, J. Indian Math. Soc., 66 (1999) 227–235.] has been erased., i.e. we give sufficient conditions for the oscillation of all solutions.