This paper studies contests where players have the ßexibility to add to their previous efforts after observing their rivals’ most recent effort in an intermediate stage. It is found that (1) contrary to previous Þndings, the Stackelberg outcome where the underdog leads and the favorite follows cannot be an equilibrium. (2) There are multiple subgame perfect equilibria all occuring on the underd...

In this paper we study the effects of a change in an exogenous variable (the fixed cost or a parameter in the demand function) on the output and the number of active firms in a Symmetric Cournot Equilibrium with Free Entry (SCEFE). The results obtained here are different from those obtained in the Cournot model with a given number of firms. In particular, an increase in demand might yield a dec...

We give an efficient algorithm for computing a Cournot equilibrium when the producers are confined to integers, the inverse demand function is linear, and costs are quadratic. The method also establishes existence, which follows in much more generality because the problem can be modelled as a potential game.

This paper presents an alternative characterization of internal Cournot equilibrium based on the first-order conditions corresponding to profit maximization over prices. This characterization is particularly useful when the market is described in terms of demand functions (rather than inverse-demand functions). A significant computational advantage is gained in homogeneous good cases as demand ...

Consider a symmetric differentiated duopoly model in which firms have private market data about the uncertain demand. We analyze two types of duopoly information equilibrium, Cournot and Bertrand, which emerge, respectively, from quantity and price competition, and show that the incentives for information sharing and its welfare consequences depend crucially on the type of competition, the natu...

In this paper, we conduct numerical experiments based upon the oligopolistic model of electricity market proposed in [1]-[2] and applied to the German electricity market. Presently, the German electricity market is shaped by strategic behavior of energy firms so that a perfect competition market has not been reached as yet. An oligopolistic market structure emerges from the analysis and is char...

This paper aims to develop a new bi-level game model for joint pricing and inventory decisions in competitive supply chain consisting of dominant manufacturer, who produces single perishable product from deteriorating raw materials, two follower retailers face nonlinear price-dependent demand operate under Cournot assumptions. Three levels warehousing including material warehouse, final retail ...

Article history: Received 8 January 2008 Available online 13 June 2009 JEL classification: C72 D43 L13

In the traditional Cournot model producers influence each other’s decisions through revenue earned in the product market. Rosen (1965) introduced the notion of a coupled constraints equilibrium which allowed players to affect their rivals’ strategy space as well. Krawczyk (2005) applied this idea to the regulation of environmental pollution where a cap on aggregate emissions implies a constrain...

We consider Nash–Cournot oligopolistic market equilibrium models with concave cost functions. Concavity implies, in general, that a local equilibrium point is not necessarily a global one. We give conditions for existence of global equilibrium points. We then propose an algorithm for finding a global equilibrium point or for detecting that the problem is unsolvable. Numerical experiments on som...