In a pure exchange economy, the authors propose a general equilibrium concept under imperfect competition, the ‘Cournotian monopolistic competition equilibrium,’ and compare it to the Cournot-Walras and the monopolistic competition concepts. The advantage of the proposed concept is to require less computational ability from the agents. The comparison is made first through a simple example, then...

This paper is part of a larger research project on the evolution of the Perfect Competition concept in a historical perspective. We try to follow the changes this concept has gone through from the different alternative views during the so–called “Marginal Revolution” towards the consolidation of the price–taker hypothesis. Some recent theoretical developments have underlined the importance of g...

Despite the large number of its references, this paper is less a survey than a systematic exposition, in an unifying framework, of the different equilibrium concepts elaborated for studying provision of public goods. Assuming convexity as well on the consumption side as on the production side, It studies their existence and their optimality properties, and also their limits for founding public ...