一类二阶非线性变时滞差分方程的振动准则

Oscillation Criteria for a Class of Second Order Nonlinear Difference Equation with Variable Delay

本文研究了一类具有正负系数的二阶非线性中立型变时滞阻尼差分方程的振动性,通过引入参数函数和Riccati变换,获得了该类方程振动的判别准则,所得结论推广了现有文献中的一系列结果.

The oscillation of a class of second order nonlinear neutral variable delay damped difference equation with positive and negative coefficients was discussed in this paper.By introducing parameter function and the generalized Riccati transformation,some new oscillation criteria for the equation are proposed.Some existed results in the literatures have been further extended.