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Existence of equilibrium stationary strategies in discounted noncooperative stochastic games with uncountable state space

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This paper considers discounted noncooperative stochastic games with uncountable state space and compact metric action spaces. We assume that the transition law is absolutely continuous with respect to some probability measure defined on the state space. We prove, under certain additional continuity and integrability conditions, that such games have ε-equilibrium stationary strategies for each ε>0. To prove this fact, we provide a method for approximating the original game by a sequence of finite or countable state games. The main result of this paper answers partially a question raised by Parthasarathy in Ref. 1.

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Communicated by Y. C. Ho

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Nowak, A.S. Existence of equilibrium stationary strategies in discounted noncooperative stochastic games with uncountable state space. J Optim Theory Appl 45, 591–602 (1985). https://doi.org/10.1007/BF00939136

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