()500100200300100300(50100150)200(507575)19851713ErnstZermelodZermelod1921’11player2strategyspacestrategy3theorderofplay4informationpayoff119942324completeperfect56l234lNashequilibrium2subgameperfectNashequilibrium…3BayesianNashequilibrium4PerfectBayeslanNashequilibrium5purestrategyNashequilibrium6mixedstrategiesNash3equilibrium7purestrategyperfectBayeslanequilibrium8mixedstrategiesperfectBayestamequilibrium1.11.21.145friendtony@sina.com6