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Almost global convergence to \(p\)-dominant equilibrium. (English) Zbl 1060.91024

Summary: A population of players repeatedly plays an \(n\) strategy symmetric game. Players update their strategies by sampling the behavior of \(k\) opponents and playing a best response to the distribution of strategies in the sample. Suppose the game possesses a \(\frac1k\)-dominant strategy which is initially played by a positive fraction of the population. Then if the population size is large enough, play converges to the \(\frac1k\)-dominant equilibrium with arbitrarily high probability.

MSC:

91A22 Evolutionary games
91A20 Multistage and repeated games
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