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Common behaviour of power indices


The variations ensuing in a weighted majority game are studied when a player increases his weight in prejudice of others or decreases in favor, or trades shares outside the game (in particular when an-person game becomes an (n+1)-person one). An invariant behaviour for different game values is found for all these cases. Possible applications to politics, shareholdings and large games are pointed out.

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Sponsored by the GNAFA of the Consiglio Nazionale delle Ricerche.

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Gambarelli, G. Common behaviour of power indices. Int J Game Theory 12, 237–244 (1983).

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  • Economic Theory
  • Game Theory
  • Power Index
  • Weighted Majority
  • Common Behaviour