标题：Uniqueness and Determinacy of the Romer (1990) Model
作者：Tang, Rongsheng; Wang, Gaowang; Wang, Jin
作者机构：[Tang, Rongsheng] Shanghai Univ Finance & Econ, Inst Adv Res, Minist Educ, Key Lab Math Econ SUFE, Shanghai, Peoples R China.; [Wang, Gaowang] Shand 更多
通讯作者地址：Wang, GW (corresponding author), Shandong Univ, Ctr Econ Res, Jinan, Peoples R China.
来源：ANNALS OF ECONOMICS AND FINANCE
关键词：BGP; Reduction of dimensionality; Social optimum
摘要：Romer (1990) solves a steady state (or balanced growth path) of his famous model by a smart conjecture and the proof of uniqueness and the saddle-point stability is examined under a simplified version (Arnold, 2000a, 2000b). Our paper provides a proof in the full model with the method of reduction of dimensionality. Moreover, we introduce a set of policy instruments which improve the monopolistic competitive equilibrium allocation up to social optimum.