Title : Monopolistic Competition with large firms
Author(s) : Claude d'Aspremont, Rodolphe Dos Santos Ferreira
Abstract : We consider the concept of Cournotian monopolistic competition equilibrium as a tractable way of taking the strategic behaviour of large firms into account in a general equilibrium framework. Existence is obtained under simple assumptions, ensuring in particular uniqueness of Cournot equilibrium for each group of firms. An extension of the concept, allowing intrasectoral competitive behaviour to vary in intensity is also examined.
Key-words : Oligopolistic and monopolistic competition. Uniqueness of Cournot equilibrium.
JEL Classification : D43, D51.
