期刊名称：CORE Discussion Papers / Center for Operations Research and Econometrics (UCL), Louvain
出版年度：2009
卷号：1
出版社：Center for Operations Research and Econometrics (UCL), Louvain
摘要：Social interactions are at the essence of societies and explain the gathering of individuals in
villages, agglomerations, or cities. We study the emergence of multiple agglomerations as
resulting from the interplay between spatial interaction externalities and competition in the land
market. We show that the geographical nature of the residential space tremendously affects the
properties of spatial equilibria. In particular, when agents locate on an open land strip (line
segment), a single city emerges in equilibrium. In contrast, when the spatial economy extends
along a closed land strip (circumference), multiple equilibria with odd numbers of cities arise.
Spatial equilibrium configurations involve a high degree of spatial symmetry in terms of city size
and location, and can be Pareto-ranked.
