cities toughen competition, allowing only the most productive to survive) and agglomeration economies (larger cities promote … a generalised version of a tractable firm selection model and a standard model of agglomeration. Stronger selection in … larger cities left-truncates the productivity distribution whereas stronger agglomeration right-shifts and dilates the …

-standing question whether agglomeration economies derive from specialization (within-industry) or diversity (between-industry). We show …

cities toughen competition, allowing only the most productive to survive) and agglomeration economies (larger cities promote … a generalised version of a tractable firm selection model and a standard model of agglomeration. Stronger selection in … larger cities left-truncates the productivity distribution whereas stronger agglomeration right-shifts and dilates the …

Do agglomerations stimulate productivity? An extensive literature on agglomeration economies, or urban increasing … returns, has analyzed this question with aggregated spatial data. This paper estimates the relationship between agglomeration … learning effect in that agglomeration enhances firms’ productivity. Third, the role of agglomeration phenomena does not seem to …