What is the Nash equilibrium in economics?
Key Takeaways. The Nash equilibrium is a decision-making theorem within game theory that states a player can achieve the desired outcome by not deviating from their initial strategy. In the Nash equilibrium, each player’s strategy is optimal when considering the decisions of other players.
What is a Nash equilibrium example?
Example: coordination between players with different preferences. Two firms are merging into two divisions of a large firm, and have to choose the computer system to use. Neither player can increase her payoff by choosing an action different from her current one. Thus this action profile is a Nash equilibrium.
How does the Nash equilibrium affect consumers?
Under the Nash equilibrium, a player does not gain anything from deviating from their initially chosen strategy. It also allows predicting the decisions of the players if they are making decisions at the same time and the decision of one player takes into account the decisions of other players.
Why is Nash equilibrium called an equilibrium?
In game theory, the Nash equilibrium, named after the mathematician John Forbes Nash Jr., is the most common way to define the solution of a non-cooperative game involving two or more players….
| Nash equilibrium | |
|---|---|
| Used for | All non-cooperative games |
What is the Nash equilibrium for trade policy?
In the trade policy game, the Nash equilibriumA game equilibrium in which every player is simultaneously maximizing his own profit given the choices being made by the other players. or noncooperative solution is the set of strategies (optimal tariffs, optimal tariffs).
What is the Nash equilibrium if there is no dominant strategy?
A dominant strategy is a strategy which results in the best payoff for a player no matter what the other firm does but a Nash equilibrium represents a strategy which maximizes payoff given what the other player would do. A game has a Nash equilibrium even if there is no dominant strategy (see example below).