Centre for Discrete and Applicable Mathematics |
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CDAM Research Report, LSE-CDAM-2003-20December 2003 |
Srihari Govindan, Arndt von Schemde and Bernhard von Stengel
Abstract
A symmetry of a game is a permutation of the player set and their strategy sets that leaves the payoff functions invariant. In this paper we introduce and discuss two relatively mild symmetry properties for set-valued solution concepts (that are equivalent when the solution concepts are single-valued) and show using examples that stable sets satisfy neither version. These examples also show that for every integer q, there exists a game with an equilibrium component of index q.
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