线性具偏差变元微分方程解的振动性

OSCILLATIONS OF LINEAR DIFFERENTIAL EQUATIONS WITH DEVIATING ARGUMENTS

建立了线性具偏差变元微分方程的所有解振动的“Sharp”条件,即:当P_i(t)、τ_i(t)(i=1,2,…,n)均为常数时,条件是充分必要的.并且这个条件大大地改进和推广了已有的一些结果。

In this paper the author establishes the 'sharp' conditionfor the oscillation of all solutions of linear differential equation withdeviating argumentsThese conditions improve and extend some known results greatly.