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The core-periphery model: A note on the existence and uniqueness of short-run equilibrium

机译:核心-外围模型:关于短期均衡的存在和唯一性的注释

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We consider the core-periphery model [P. Krugman, Increasing returns and economic geography, Journal of Political Economy 199 (1) (1991) 483-499]. The nature and stability of the possible steady states of the model have been made progressively precise; [M. Fujita, P. Krugman, A. Venables, The Spatial Economy. Cities, Regions and International Trade, MIT Press, Cambridge, 1999; R. Baldwin, R. Forslid, Ph. Martin, G. Ottaviano, F. Robert-Nicoud, Economic Geography and Public Policy, Princeton Univ. Press, 2003]. In that model as well as in all the new economic geography models that have been derived from it, the short-run (instantaneous) equilibrium is implicitly determined by the current labor distribution across regions. The numerical computations used so far to determine the short-run equilibrium, tend to suggest its existence. In this paper, an existence and uniqueness proof of short-run equilibrium is provided.
机译:我们考虑核心外围模型[P.克鲁格曼,《增加报酬和经济地理》,《政治经济学杂志》 199(1)(1991)483-499]。模型的可能稳态的性质和稳定性已逐步精确化。 [M.藤田,克鲁格曼,A。Venables,《空间经济》。 《城市,地区与国际贸易》,麻省理工学院出版社,剑桥,1999; R. Baldwin,R。Forslid,Ph。Martin,G。Ottaviano,F。Robert-Nicoud,普林斯顿大学经济地理与公共政策。出版社,2003]。在该模型以及由此模型衍生的所有新的经济地理模型中,短期(瞬时)均衡是由当前跨地区劳动力分配隐含地确定的。到目前为止,用于确定短期均衡的数值计算倾向于表明其存在。本文提供了短期均衡的存在性和唯一性证明。

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