高阶非线性时滞微分方程的振动定理*
Oscillation Theorems of Higher Order Nonlinear Delay Differential Equations
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Abstract: This paper has given necessary and sufficient conditions for oscillation of a classof higher order nonlinear delay differential equations,and given some sufficientconditions or necessary conditions for oscillation of a forced delay differential equation.
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Key words:
- nonlinear /
- delay differential equation /
- oscillation
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