# game: mutual cooperation without non-cooperative actions

AA << have developed a model that consists of all possible strategies using a one-period memory of past actions. This model enables us to analyze a "melting pot" of strategies, wherein several strategies interact and compete with each other. (AA) results revealed that one strategy, in which one escapes if a partner defects or cooperates if a partner becomes a loner, dominates and maintains cooperation in an alternating prisoner's dilemma game. >>

H. Yamamoto, I. Okada, et al.
Effect of voluntary participation on an alternating and a simultaneous prisoner's dilemma.  Phys. Rev. E 100, 032304 Sep 11,  2019.    https://journals.aps.org/pre/abstract/10.1103/PhysRevE.100.032304   

The Prisoner's Dilemma: Exploring a strategy that leads to mutual cooperation without non-cooperative actions. Rissho University. Sep 23, 2019.   https://m.phys.org/news/2019-09-prisoner-dilemma-exploring-strategy-mutual.html   

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