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 …

into large cities, because large cities select more productive entrepreneurs and firms, or because of agglomeration … between them. The model can replicate stylised facts about sorting, agglomeration, and selection in cities. It can also …

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 …