一类非线性时滞微分方程振动的充要条件

Necessary and Sufficient Conditions for Oscillation of a Nonlinear Delay Equations

给出了非线性时滞微分方程dx/dt+∑n i=1 fi(t,x(t-τi(t)))=0振动的充要条件.

The necessary and sufficient conditions for oscillations of a nonlinear delay equations was given. dxdt+∑ni=1f i(t,x(t-τ i(t)))=0.