摘要
利用上、下确界 ,应用不等式的方法给出了保证时滞平方logistic型差分方程每一正解 {xn}有limn∞xn=x,(x是方程的正平衡点 )的充分条件 : ni=n-knri 的上确界小于与logis tic差分方程得到的相应方程的唯一正解 ;
The features of square logistic Differencical equation with delay were discussed by supremun infimun and inequality.The sufficient conditions that guaranteed positive solution of equation to tend to the positive equilibrium were obtained.And the supremun of theni=n-k nr is which was smaller than the only positive solution of the equation was equaralent to the equation of logistic.This theory improves some existing conclusions.
