A Theoretical Analysis of the Stationarity of an Unrestricted Autoregression Process
非受限自回归过程的平稳性理论分析
The higher dimensional autoregressive models would describe some of the econometric processes relatively generically if they incorporate the heterogeneity in dependence on times. This paper analyzes the stationarity of an autoregressive process of dimension $k>1$ having a sequence of coefficients $β$ multiplied by successively increasing powers of $0<δ<1$. The theorem gives the conditions of stationarity in simple relations between the coefficients and $k$ in terms of $δ$.…