Econometrica

Journal Of The Econometric Society

An International Society for the Advancement of Economic
Theory in its Relation to Statistics and Mathematics

Edited by: Guido W. Imbens • Print ISSN: 0012-9682 • Online ISSN: 1468-0262

Econometrica: Mar, 2001, Volume 69, Issue 2

On the Generic Finiteness of Equilibrium Outcome Distributions in Game Forms

https://doi.org/10.1111/1468-0262.00198
p. 455-471

Srihari Govindan, Andrew McLennan

Consider nonempty finite pure strategy sets ,…,, let =×⋅⋅⋅×, let Ω be a finite space of “outcomes,” let Δ(Ω) be the set of probability distributions on Ω, and let θ: →Δ(Ω) be a function. We study the conjecture that for any utility in a generic set of ‐tuples of utilities on Ω there are finitely many distributions on Ω induced by the Nash equilibria of the game given by the induced utilities on . We give a counterexample refuting the conjecture for ≥3. Several special cases of the conjecture follow from well known theorems, and we provide some generalizations of these results.


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