Equilibrium Trajectories of Economic Growth
经济增长的均衡轨迹AI 解读 ↓
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AI 根据所提供的论文材料归类：摘要讨论动态均衡、增长轨迹与 turnpike 定理，未涉及所列细分领域的具体计量方法，证据不足以归入这些方向。
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经济增长的均衡轨迹
- 研究问题
- 在技术与需求随时间变化的动态均衡中，长期增长轨迹能否趋近共同路径，有限规划期与无限期的有效均衡轨迹又如何关联？
- 方法与思路
- 作者在允许技术与需求函数变化的动态均衡模型中定义有效均衡轨迹，研究无限轨迹的渐近性质，并与有限轨迹及平稳模型比较。
- 材料陈述的贡献
- 摘要称，给定条件下无限有效均衡轨迹相互趋近，平稳模型可推出强 turnpike 定理，并给出有效轨迹唯一及排除无效轨迹的条件。
- 阅读关注点
- 核对有效轨迹的定义、无限轨迹收敛与唯一性的条件，以及强 turnpike 定理和特殊优化模型中强最优性的证明及适用范围。
- 阅读边界
- 摘要未列出收敛、唯一性及排除无效轨迹的具体条件；无效轨迹消费趋零的表述也带有限定，不能推广为所有增长模型的结论。
原文摘要
THIS PAPER BELONGS to that part of economic dynamics of which the consumption turnpike theorems are typical results. However, rather than the usual formulation of the problem as a mathematical programming problem, we study it in the framework of dynamic equilibrium models which were first studied in [9]. In [9] we considered finite equilibrium trajectories for which the technology as well as demand functions were assumed constant in time. Here a more general model will be described. It permits changing technology and demand functions and pays more attention to the exploration of the asymptotic properties of infinite trajectories. We define the class of efficient equilibrium trajectories and prove that, under certain conditions, infinite trajectories in this class converge to each other. Finite trajectories (which are always efficient) may differ essentially from them only at the beginning and at the end of the planning period. For a stationary model a strong turnpike theorem follows from these considerations. It is shown that nonefficient equilibrium trajectories are characterized by fast growth of prices and high levels of production. At the same time, the consumption, as a rule, goes to zero. Here we present conditions which imply the uniqueness of efficient trajectories and the absence of nonefficient ones. For the special case in which the equilibrium model is equivalent to an optimization model, efficient equilibrium trajectories are strongly optimal.