Uniform payoff security and Nash equilibrium in metric games
نویسندگان
چکیده
We introduce a condition, uniform payoff security, for games with separable metric strategy spaces and payoffs bounded and measurable in players’ strategies. We show that if any such metric game G is uniformly payoff secure, then its mixed extension G is payoff secure. We also establish that if a uniformly payoff secure metric game G has compact strategy spaces, and if its mixed extension G has reciprocally upper semicontinuous payoffs, then G has a Nash equilibrium in mixed strategies. We provide several economic examples of metric games satisfying uniform payoff security. JEL Classification: C72
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