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Cournot's model of competition is typically presented for the case of a duopoly market structure; the following example provides a straightforward analysis of the Cournot model for the case of Duopoly. Therefore, suppose we have a market consisting of only two firms which we will call firm 1 and firm 2.
A Cournot duopoly is a model of strategic interaction between two firms where they simultaneously choose their output levels, assuming the rival's output level is fixed. The firms compete on quantity, and each firm attempts to maximize its profit given the other firm's output level.
The Cournot duopoly model developed in his book also introduced the concept of a (pure strategy) Nash equilibrium, the reaction function and best-response dynamics. Cournot believed that economists must utilize the tools of mathematics only to establish probable limits and to express less stable facts in more absolute terms.
Duopoly, a case of an oligopoly where two firms operate and have power over the market. [8] Example: Aircraft manufactures: Boeing and Airbus. A duopoly in theory could have the same effect as a monopoly on pricing within a market if they were to collude on prices and or output of goods.
The theory was originally proposed in the nineteenth century by Antoine Augustin Cournot. [1] This can be seen in private toll roads where more than one operator controls a different section of the road. The solution is for one agent to purchase all sections of the road. Complementary goods are a less extreme form of this effect. In this case ...
In oligopoly theory, conjectural variation is the belief that one firm has an idea about the way its competitors may react if it varies its output or price. The firm forms a conjecture about the variation in the other firm's output that will accompany any change in its own output.
The basic model is a variation on the Stackelberg–Cournot "leader and follower" duopoly game. Alternatively, the model can be portrayed in game theoretic terms as initially a game with multiple Nash equilibria , with government having the capability of affecting the payoffs to switch to a game with just one equilibrium. [ 1 ]
For example, in the neoclassical growth model, the working population is growing at a rate which is exogenous (determined outside the model, by non-economic forces). In dynamic equilibrium, output and the physical capital stock also grow at that same rate, with output per worker and the capital stock per worker unchanging.