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Equilibrium refinement for a model of non-monocentric internal structures of cities: A potential game approach

Minoru Osawa () and Takashi Akamatsu

Journal of Economic Theory, 2020, vol. 187, issue C

Abstract: Using the theory of potential games, this paper addresses the emergence of polycentric structures in cities that result from trade-offs between agglomeration economies and congestion effects. We consider a model that explains the formation of multiple business centers in cities as an equilibrium outcome under the presence of households' commuting costs and positive technological externalities between firms. We show that the model is a large-population (non-atomic) potential game. To elucidate properties of stable spatial equilibria in the model, we consider local and global maximizations of the potential function, which are known to correspond to various equilibrium refinement criteria. We find that (i) the formation of business centers (agglomeration of firms) is possible only when households' commuting costs are sufficiently low and that (ii) the size (number) of business centers increases (decreases) monotonically as communication between firms becomes easier.

Keywords: Agglomeration; Multiple equilibria; Equilibrium refinement; Potential game (search for similar items in EconPapers)
JEL-codes: C62 C72 C73 R14 (search for similar items in EconPapers)
Date: 2020
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Persistent link: https://EconPapers.repec.org/RePEc:eee:jetheo:v:187:y:2020:i:c:s0022053120300302

DOI: 10.1016/j.jet.2020.105025

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