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Pure Pairwise Nash Equilibriums in multiplayer games 
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#1
Jun1111, 10:52 PM

P: 25

Hey everyone,
Not sure if this is the right section to post this in, but makes the most sense to me so here goes. Consider a game with k players. Now suppose that if only two of the players are allowed to make changes to their strategies (i.e. k2 players are frozen) then those two players have a pure strategy nash equilibrium. Phrased another way; every pair of players has a pure nash equilibrium. My question is does this imply anything about a global nash equilibrium, specifically; if pairwise pure nash equilibriums exist, must there also exist a nash equilibrium for all k players? Do we need strengthen our assumptions to determine anything? What about in the case of 3 players? Thanks. 


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