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The Cournot competition is an economic model in which competing firms choose a quantity to produce independently and simultaneously. Meaning of duopole in the French dictionary with examples of use. Synonyms for duopole This theory was established by Antoine-Augustin Cournot in Article détaillé: Duopole de Cournot. Les hypothèses de l’analyse de Cournot sont: Chaque firme considère.

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An essential assumption of this model is the “not conjecture” that each firm aims to maximize profits, based on the expectation that its own output decision will not have an effect on the decisions of its rivals.

This section presents an analysis of the model with 2 firms and constant marginal cost.

By using this site, you agree to the Terms of Use and Privacy Policy. The state of equilibrium Cooperative game Determinacy Escalation of commitment Extensive-form game First-player and second-player win Game complexity Graphical game Hierarchy of beliefs Information set Normal-form game Preference Sequential game Simultaneous game Simultaneous action selection Solved game Succinct game. Normally the cost functions are treated as common knowledge. Economics models Suopole games Competition economics Oligopoly.

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Cournot Duopoly

The market price is pushed to marginal cost level. This equilibrium is usually known as Cournot equilibrium with endogenous entry, or Marshall equilibrium. Nash equilibrium Subgame perfection Mertens-stable equilibrium Bayesian Nash equilibrium Perfect Bayesian equilibrium Trembling hand Proper equilibrium Epsilon-equilibrium Correlated equilibrium Sequential equilibrium Quasi-perfect equilibrium Evolutionarily stable strategy Risk dominance Core Shapley value Pareto efficiency Gibbs equilibrium Quantal response equilibrium Self-confirming equilibrium Strong Nash equilibrium Markov perfect equilibrium.

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When the market is characterized by fixed costs of production, however, we can endogenize the number of competitors imagining that firms enter in the market until their profits are zero. Discuss Proposed since January This result can be generalized to the case of firms with different cost structures se appropriate restrictions and non-linear demand.

However, as the number of firms increases towards infinity, the Cournot model gives the same result as in Bertrand model: Retrieved from ” https: Price is a commonly known decreasing function of total output. The profit of firm i is revenue minus cost. Duopolr Cournot Theorem then states that, in absence of fixed costs of production, as the number of firms in the market, Ngoes to infinity, market output, Nqgoes to the competitive level and the price converges to marginal cost.

Arrow’s impossibility theorem Aumann’s agreement theorem Folk theorem Minimax theorem Nash’s theorem Purification theorem Revelation principle Zermelo’s theorem.

duopol Topics in game theory. With linear demand and identical, constant marginal cost the equilibrium values are as follows:. October Learn how and when to remove this template message.

The market price is set at a level such that demand equals the total quantity produced by all firms.

Meaning of “duopole” in the French dictionary

This page was last edited on 7 Decemberat Articles needing additional references from October All articles needing additional references Articles to be merged from January All articles to be merged. Cournot competition is an economic model used to describe an industry structure in which companies compete on the amount of output they will produce, which they decide on independently of each other and at the same time.


It is named after Antoine Augustin Cournot — who was inspired by observing competition in a spring water duopoly. Equilibrium prices will be:.

These are the firms’ best response functions.

Unsourced material may be challenged and removed. Hence with many firms a Cournot market approximates a perfectly competitive market. Suppose the industry has the following price structure: Each firm takes the quantity set by its competitors as a given, evaluates its residual demand, and then behaves as a monopoly. To calculate the Nash equilibrium, the best response functions of the firms must first be calculated. The cost functions may be the same or different among firms. It has been suggested that Complementary ve be merged into this article.

Cournot Duopoly

The consequence of this is that in equilibrium, each courrnot expectations of how other firms will act are shown to be correct; when all is revealed, no firm wants to change its output decision. Antoine Augustin Cournot first outlined his theory of competition in his volume Recherches sur les Principes Mathematiques de la Theorie des Richesses as a way of describing the competition with a market for spring water dominated by two suppliers a duopoly.

Simple models of competitionpage 6, Dept. In Nash equilibria, both firms will be playing best responses so solving the above equations simultaneously.

Revenue is the product of price and quantity and cost is given by the firm’s cost function, so profit is as described above: Views Read Edit View history.