We examine contemporaneous perfect E-equilibria, in which a player's actions after every history, evaluated at the point of deviation from the equilibrium, must be within of a best E response. This concept implies, but is stronger than, Radner's ex ante perfect E-equilibrium. A strategy profile...

We examine contemporaneous perfect equilibria, in which a player's actions after every history, evaluated at the point of deviation from the equilibrium, must be within of a best response. This concept implies, but is not implied by Radner's ex ante perfect equilibrium. A strategy profile is a...