摘要
Definition 1. If （?）A∈A<sub>I</sub>, the zero solution of（1.2 ）is absolutely stable, then we say the interval system （1.1）is Robust absolutely stable, which is denoted by （1.1）∈RAS. Definition 2. If （?）A∈A<sub>I</sub>, the zero solution of （1.2） is absolutely stable for partial variables x<sub>j0</sub>, …, x<sub>n+1</sub>, then we call the interval system （1.1）Robust absolutely stable for partial variables x<sub>j0</sub>, …, x<sub>n+1</sub>, which is denoted by （1.1）∈RAS （j0→n+1）.
基金
Project supported by the National Natural Science Foundation of China
