In this note, we introduce conjectural variations in a simple general oligopoly equilibrium model of a pure exchange economy. Three results are obtained. First, the price and utility levels generally increase with the value taken by conjectures. Second, when the conjectural variation takes its...

In this paper, we introduce the concept of conjectural variations across sectors called "external conjectural variations" in a pure exchange economy. Three results are obtained. First, the symmetric oligopoly equilibrium coincides with the Cournot equilibrium when the conjectural variations are...

Resumen: En este artículo se considera un modelo de oligopolio de Stackelberg lineal en T etapas. En primer lugar, se muestra geométrica y analíticamente que bajo las condiciones de demanda de mercado lineal y costos marginales constantes e idénticos el modelo de Stackelberg en T etapas se...

In this paper, we consider a T-stage linear model of Stackelberg oligopoly. First, we show geometrically and analytically that under the two conditions of linear market demand and identical constant marginal costs, the T-stage Stackelberg model reduces to a model where T oligopolies exploit...

In this paper, we consider a hierarchical oligopoly model, in which firms compete on quantities of an homogeneous product. We provide a proof and an interpretation that under the three necessary and sufficient conditions of linear aggregate demand, constant and identical marginal costs, the...

In this note, we consider a multisector macroeconomic model under oligopolistic competition. We analyze the effect of an increase of the number of sectors on equilibrium price and on allocations, when the number of oligopolits of each type is constant. We also show that a tax policy has more...