中文摘要：

考虑Volterra型时滞积分方程单支θ-方法的稳定性质.证明当θ=1时数值方法将保持此时滞系统解析解相应的稳定性,进一步描绘了向后Euler方法的稳定区域.

英文摘要：

Stable properties of one-leg θ -methods for Volterra integral equations with a lagging argument is considered. It is proved numerical methods preserve corresponding stability of this system if θ = 1. Furthermore, stability region for the backward Euler method is presented.