Most existing results of evolutionary games restrict only to the Nash equilibrium. This paper introduces the analogue of evolutionarily stable strategy (ESS) for correlated equilibria. We introduce a new notion of evolutionarily stable correlation (ESC) and prove that it generalizes ESS. We also...

When individual preferences can express relative intensities, the scope for social decision mechanisms is enlarged. We show that ethical welfare operations then arise in a uniform, constitutional manner, in both finite and infinite contexts.We focus on quaternary preferences as representatives...

We prove that the Strong Axiom of Revealed Preference tests the existence of a strictly quasiconcave (in fact, continuous, generically C(infinity), strictly concave, and strictly monotone) utility function generating finitely many demand observations. This sharpens earlier results of Afriat,...