The new sufficient conditions for the oscillation of all solutions of the neutral differential equation with continuous and piecewise constant arguments are obtained.
获得了一类带有连续和分段常数变元的中立型微分方程所有解振动的新的充分条件。
2
Some sufficient conditions are established for the oscillation of systems of parabolic differential equations of neutral type.
建立了一类中立型抛物微分方程组解的振动的若干充分条件。
3
Some sufficient conditions are obtained for the oscillation of first order neutral differential-difference equations with positive and negative periodic coefficients.