There is a large consensus among international institutions and national governments to favor urban-containment policies - the compact city - as a way to improve the ecological performance of the urban system. This approach overlooks a fundamental fact: what matters for the ecological outcome of...

We study how the level of trade costs and the intensity of competition can explain the existence of two-way, one-way or no trade within the same industry. As trade costs decrease from very high to very low values, the economy moves from autarky to a regime of two-way trade, through a regime of...

We propose a general model of monopolistic competition and derive a complete characterization of the market equilibrium using the concept of Relative Love for Variety. When the RLV increases with individual consumption, the market generates pro-competitive effects. When it decreases, the market...

This paper compares two policies: trade cost reduction and firm relocation cost reduction using a three-country version of a heterogeneous-firms economic geography model, where the three countries have different market (population) size. We show how the effects of the two policies differ, in...

This paper shows that globalization increases (decreases) the growth rate if and only if the beachhead cost for the domestic market is strictly higher (lower) than that for the foreign market in a endogenous growth model with firm heterogeneity, international trade, and endogenous international...

This paper investigates the strategic effects of new entry into product markets in a unionized oligopoly where entry and wage negotiations are sequential. When both a domestic incumbent and a foreign entrant hire unionized workers, the incumbent has incentives to raise the wage, because a higher...

This paper introduces a new duality concept, factor income function, in order to establish the factor Price Equalization theorem and the Heckscher-Ohlin theorem in an oligopolistic Heckscher-Ohlin model with increasing returns to scale.

We study a duopoly model of trade and its trade policy. The two country trade model to be discussed is the following. There are three goods (0,1 and 2). Good 0 is produced by perfectly competitive firms, and the good 1 and the good 2 are imperfect substitutes, each produced by a home and a...

This paper examines international trade in tainted food and other low-quality products. We first find that for a large class of environments, free trade is the trading system that conveys the highest incentives to produce non-tainted high-quality goods by foreign exporters. However, free trade...

This paper constructs a dynamic scale-free North-South model of trade with endogenous innovation. In the North two types of R&D races take place simultaneously within each industry. One is local-sourcing-targeted R&D race, which results in the winner firm manufacturing in the North. The other is...