Uncoupled Dynamics Do Not Lead to Nash
Equilibrium
Sergiu Hart and Andreu Mas-Colell
(*) For the last sentence in the proof of Lemma 3,
consider the three cases: four real eigenvalues; two real eigenvalues
and one conjugate pair; two conjugate pairs.
Abstract
We call a dynamical system uncoupled if the dynamic for each player
does not depend on the payoff functions of the other players. We show that
there are no uncoupled dynamics that are guaranteed to converge to Nash
equilibrium, even when the Nash equilibrium is unique.
Journal of Economic Literature Classification Numbers: C7, D83.
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