【摘要】 研究具逐段常数变量时滞逻辑方程x. (t) =x(t) a + mi=1bixpi([t- k]) - mi=1cixqi([t- k]) ,得到了方程所有解振动的一个充分必要条件 ,推广了 G.L adas和 C.Qian(Dyna.Stab.Sys.9,1994)的结果 .更多还原

【Abstract】 This paper is concerned with the delay logistic equation with piecewise constant argumentsx·(t)=x(t)a+  mi=1b ix p i()-mi=1c ix q i(),and a necessary and sufficient condition for oscillation of all solutions of the equation is obtained which extends the corresponding conclusion of Ladas an d Qian(Dyna.Stab.Sys.9,1994).更多还原