Consider a model à la Koopmans-Beckmann involving two indivisible and interactive firms, as well as a continuum of workers. Firm 1 uses labor, while firm 2 uses labor and good 1 produced by firm 1; both goods 1 and 2 can be exported their output but good 1 cannot be imported. The land...

The most salient feature of the spatial economy is the presence of a large variety of economic agglomerations. Our purpose is to review some of the main explanations of this universal phenomenon, as they are proposed in urban economics and modern economic geography. We first show why the...

A new approach is proposed to explain the formation of secondary employment centers in a monocentric city. Specifically, a large firm considers locating a new plant in a city where none of the existing businesses has a significative share of the labor force, so that its location can be viewed as...

In this paper we consider a model with two industrialized countries and immigrants that come from "the rest of the world".The countries are distinguished on the basis of three parameters: population size, bias toward immigrants, and production complementarity between native population and...

This paper focuses on two distint facets of globalization: the decrease in the trade costs of goods and the decline of communication costs between headquarters and production facilities within firms. When the unskilled have about the same wage in the two regions, the decrease of these costs...

We combine spatial and monopolistic competition to study market interactions between downtown retailers and an outlying shopping mall. Consumers shop at either marketplace or at both, and buy each variety in volume. The market solution stems from the interplay between the market expansion effect...

We develop a model of monopolistic competition that accounts for consumers' heterogeneity in both incomes and preferences. This model makes it possible to study the implications of income redistribution on the toughness of competition. We show how the market outcome depends on the joint...

We consider an economic geography model of a new genre: all firms and workers are mobile and their agglomeration within a city generates rising urban costs through competition on a land market. When commuting costs are low (high), the industry tends to be agglomerated (dispersed). With two...