GENERAL EQUILIBRIUM THEORY WITH IMPERFECT COMPETITION¹

Abstract

Abstract. This survey is organized as follows. I. Introduction. II. The main issues. III. Negishi's model. IV. Objective demand in the Cournot‐Nash framework. V. Objective demand in the Bertrand‐Nash framework. VI. The assumption of quasi‐concavity of the profit functions. VII. Compromises between the conjectural and the objective approach. VIII. Insights into the notion of perfect competition. IX. Conclusion.