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2.7 - Game Theory

from PART II - THE THEORY OF THE FIRM

Published online by Cambridge University Press:  05 June 2012

Humberto Barreto
Affiliation:
Wabash College, Indiana
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Summary

Von Neumann hovered for a moment by two rather sloppily dressed graduate students who hunched over a peculiar-looking piece of cardboard. It was a rhombus covered with hexagons. It looked like a bathroom floor. The two young men were taking turns putting down black and white go stones and had very nearly covered the entire board.

Later that evening, at a faculty dinner, he buttonholed Tucker and asked, with studied casualness, “Oh, by the way, what was it they were playing?” “Nash,” answered Tucker, allowing the corners of mouth to turn upwards ever so slightly, “Nash.”

Sylvia Nasar

Perfect competition: Firms are price takers with no power to affect the market price; optimize by choosing q to equalize MC and P.

Monopoly: the sole seller of a product with no close substitutes; optimize by choosing q to equalize MC and MR and then charge the highest price that clears the market (given by the demand curve).

In both market structures, the profits of the individual firm are not affected by what any other firm does. In perfect competition, there are so many other firms that Firm i does not care about what Firm j is doing. In monopoly, there is no other firm to worry about.

What about market structures between the extremes of perfect competition and monopoly?

Oligopoly is a market dominated by a few firms that are interdependent. In other words, what each individual firm chooses does affect the profits of the other firm.

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Publisher: Cambridge University Press
Print publication year: 2009

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  • Game Theory
  • Humberto Barreto, Wabash College, Indiana
  • Book: Intermediate Microeconomics with Microsoft Excel
  • Online publication: 05 June 2012
  • Chapter DOI: https://doi.org/10.1017/CBO9780511841538.020
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  • Game Theory
  • Humberto Barreto, Wabash College, Indiana
  • Book: Intermediate Microeconomics with Microsoft Excel
  • Online publication: 05 June 2012
  • Chapter DOI: https://doi.org/10.1017/CBO9780511841538.020
Available formats
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Save book to Google Drive

To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Google Drive.

  • Game Theory
  • Humberto Barreto, Wabash College, Indiana
  • Book: Intermediate Microeconomics with Microsoft Excel
  • Online publication: 05 June 2012
  • Chapter DOI: https://doi.org/10.1017/CBO9780511841538.020
Available formats
×