This paper studies the impact of uncertain demand on firms' capacity decisions when they operate in an oligopolistic environment. We define a two-stage game where firms choose capacity in the first stage without knowing which state of Nature is going to realize, and output levels in the second,...

This paper analyses successive markets where the intra-market linkage depends on the technology used to produce the final output. We investigate entry of new firms, when entry obtains by expanding the economy, as well as collusive agreements between firms. We highlight the differentiated effects...

An example of an exchange economy is provided, satisfying all the assumptions as in Dubey-Shubik (1988), for which the trivial Nash Equilibrium is the unique equilibrium point of the associated market game. From this example, we are led to propose an argument, related to the intensity of...

In this paper we analyze how the technology used by downstream firms can influence input and output market prices. We show via an example that both these prices increase under a decreasing returns technology while the contrary holds when the technology is constant.

This paper analyses price competition under product differentiation when goods are defined in a two dimensional characteristic space, and consumers do not know which firm sells which quality. Equilibrium prices consist of two additive terms, which balance consumers' relative valuation of goods'...

We study the introduction of new products in a vertically differentiated industry. Innovative firms have to engage into reducing time-to-market investments in order to shorten the time interval between innovation and sales. Still, these investments generate irreversible costs which have to be...

This paper analyses how the level of social protection is determined when its choice depends on political competition. First this is done under autarky. Then the analysis is extended to take account of the existence of an international capital market. We show that social protection never...