Nonoscillation Results for a Class of Third Order Nonlinear Differential Equations
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摘要: 给出了一类三阶非线性微分方程存在非振荡解的充分条件,使得Parhi准则更加一般化.在一些特殊情况下,这些结论适合于更弱的条件.Abstract: Sufficient conditions for the nonoscillatory solutions of a class of third order nonline ardifferential equations are presented. The results obtained generalize some criteria given by Parhi. In some special cases,some of these results contain weaker conditions.
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Key words:
- differ ential equation /
- nonlinear /
- nonoscillatory solution /
- Parhi criteria
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