Coarse Correlated Equilibria and Sunspots
For duopoly models, we analyse the concept of coarse correlated equilibrium using simple symmetric devices that the players choose to commit to in equilibrium. In a linear duopoly game, we provice that Nash-centric devices, involving a sunspot structure, are simple symmetric coarse correlated equilibria. Any small unilaterial perturbation from such a structure fails to be equilibrium.
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