论文标题
线性多元理性期望模型的因果解决方案集的维度
The Dimension of the Set of Causal Solutions of Linear Multivariate Rational Expectations Models
论文作者
论文摘要
本文分析了从线性多元理性期望模型获得的结构差方程的自由参数和解决方案的数量。首先，可以表明，自由参数的数量取决于结构差方程的特定矩阵多项式的零的结构，以及合理期望模型的输入数量。其次，分析了要求内源性变量的某些组成部分的含义。第三，给出了因果固定解决方案的存在和独特性的条件。
This paper analyses the number of free parameters and solutions of the structural difference equation obtained from a linear multivariate rational expectations model. First, it is shown that the number of free parameters depends on the structure of the zeros at zero of a certain matrix polynomial of the structural difference equation and the number of inputs of the rational expectations model. Second, the implications of requiring that some components of the endogenous variables be predetermined are analysed. Third, a condition for existence and uniqueness of a causal stationary solution is given.
