We provide a selective survey of what has been accomplished under the heading of monopolistic competition in industrial organization and other economic elds. Among other things, we argue that monopolistic competition is a market structure in its own right, which encompasses a much broader set-up than the celebrated constant elasticity of substitution (CES) model. Although oligopolistic and monopolistic competition compete for adherents within the economics profession, we show that this dichotomy is, to a large extend, unwarranted. Joint with Jacques-François Thisse.
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