摘要
Asymptotical stability independent of delay differential equation can be expressed in terms of zero criteria for polynomials in two independent complex variables. The necessary and sufficient conditions are given which differ from those obtained in the former literature.
０ ＩＮＴＲＯＤＵＣＴＩＯＮＴｈｉｓｎｏｔｅｄｅａｌｓｗｉｔｈｔｈｅｄｅｌａｙｄｉｆｆｅｒｅｎｔｉａｌｅｑｕａｔｉｏｎｄｕ（ｔ）ｄｔ＝ａｕ（ｔ）＋ｂｕ（ｔ－τ）＋ｃｕ（ｔ－２τ）（１）ｗｈｅｒｅτ≥０ａｎｄａ，ｂ，ｃａｒｅｒｅａｌｎｕｍｂｅｒｓ．Ｌｅ...
