For an industry producing a composite commodity, we propose a comprehensive concept of oligopolistic equilibrium, allowing for a parameterized continuum of regimes varying in competitive toughness. Each firm sets simultaneously its price and its quantity under two constraints, relative to its...

[eng] Price competition and cournotian equilibria. . Contrary to a widespread belief, strategie choices described by the Cournotian model are not confined to quantities. Only, price strategies are constrained by the fact that « the priee is necessarily the same » for producers of a homogeneous...

We develop an overlapping generations model, where firms (as consumers) have a two-period life, investing in R&D during the first period and competing in the product market in the second period. The number of firms is endogenously determined and the set of successful firms by a Bernoullian...

In order to formalize the variety of oligopolistic competition regimes, we adopt an approach (pioneered by Shubik, 1959) where firms behave strategically both in price and quantity. The corresponding concept of oligopolistic equilibrium allows for a parameterized continuum of regimes with...

The cyclical behavior of wages and prices was a central topic in trade cycle analysis on the eve of the Second World War. Keynes and Harrod independently referred in the same year to the supposed countercyclicality of real wages, a feature that was contested soon after, on empirical grounds, by...