This technical report illustrates a simulation performed to assess the likely economic impact of the Grand Paris Express investments on the Île-de-France and the other European Union regions, under the working assumption of a combined 1% increase in labour productivity due to better matching...

This paper discusses the reasons for the spatial impossibility theorem, which states that the competitive paradigm cannot explain the formation of large urban agglomerations and trade flows. This result is especially meaningful insofar as it is internal to the theory itself. We then briefly...

We investigate the role of spatial frictions in search equilibrium unemployment. For that, we develop a model of the labor market in which workers' location in an agglomeration depends on commuting costs, the endogenous price of land and the value of job search and employment. We first show that...