This paper studies how firm heterogeneity in terms of productivity affects the balance between agglomeration and … endogenous markups. It shows that firm heterogeneity matters. However, whether it shifts the balance from agglomeration to … `evenness'. Accordingly, the role of firm heterogeneity in selection models of agglomeration can not be fully understood without …

This paper develops a quantitative model of internal city structure that features agglomeration and dispersion forces … estimate agglomeration and dispersion forces, we use data on thousands of city blocks in Berlin for 1936, 1986 and 2006 and … residential externalities. We show that the model with the estimated agglomeration parameters can account both qualitatively and …

This chapter surveys recent developments in agglomeration theory within a unifying framework. We highlight how … locational fundamentals, agglomeration economies, the spatial sorting of heterogeneous agents, and selection effects affect the …

characteristics on industry location can be explained by a combination of sunk costs and agglomeration effects. …

We study how industry-level agglomeration economies affect government policy. Using administrative data on firm …

-integrated firms is a counter-example to the strong agglomeration effects found in the CP model. A symmetric equilibrium will always be … stable and hence agglomeration is prevented. The introduction of vertically-integrated firms that can separate the location … original CP model and thus lead to more agglomeration. Second, it also tends to decrease the parameter space in which full …

This Paper studies the theoretical micro-foundations of urban agglomeration economies. We distinguish three types of … characterization of some of the main theoretical underpinnings of urban agglomeration economies, to discuss modeling issues that arise … when working with these tools, and to compare different sources of agglomeration economies in terms of the aggregate urban …

agglomeration of economic activities. …