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On Games of Perfect Information: Equilibria, ε—Equilibria and Approximation by Simple Games
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Resumo(s)
We show that every bounded, continuous at infinity game of perfect information has an ε−perfect equilibrium. Our method consists of approximating the payoff function of each player by a sequence of simple functions, and to consider the corresponding sequence of games, each differing form the original game only on the payoff function. In addition, this approach yields a new characterization of perfect equilibria: a strategy f is a perfect equilibrium in such a game G if and only if it is an 1/n−perfect equilibrium in Gn for all n, where {Gn} stand for our approximation sequence.
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Citação
Carmona, Guilherme, On Games of Perfect Information: Equilibria, ε—Equilibria and Approximation by Simple Games (February, 2003). FEUNL Working Paper Series No. 427