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タイトル: Agglomerations in a multi-region economy: Poly-centric versus mono-centric patterns
著者: Akamatsu, Takashi
Mori, Tomoya
Takayama, Yuki
キーワード: new economic geography model
many-region model
multiple agglomerations
stability
bifurcation
発行日: 21-Oct-2015
出版者: Institute of Economic Research, Kyoto University
誌名: KIER Discussion Paper
巻: 929
抄録: Agglomeration externalities have been recognized as major sources of lumpy spatial distributions of industries and population. While the abstraction of interregional space has been a common exercise, recent increasing availability of disaggregated geographical data and more sophisticated computational techniques have promoted counterfactual analyses based on many-region models of agglomeration externalities with explicit interregional space (e.g., Redding and Sturm, 2008; Allen and Arkolakis, 2014). A caveat is that incorporating interregional space to a many-region model with agglomeration externalities does not by itself warrant the formation of polycentric agglomerations in stable equilibria—a crucial property in order to replicate the observed geography of agglomerations. We elaborate this point by comparing a pair of new economic geography models, Forslid and Ottaviano (2003) and Helpman (1998). In a two-region economy, these models exhibit both "agglomeration" (i.e., a relative concentration of mobile agents in one of the regions) and "dispersion" (i.e., a uniform distribution of mobile agents across the two regions). But, if the location space were more disaggregated, only the former admits poly-centric agglomerations in stable equilibria, while in the latter, only a mono-centric agglomeration can occur if any.
URI: http://hdl.handle.net/2433/200688
出現コレクション:KIER Discussion Paper (英文版)

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