This note deals with Cournot type oligopolies in which the market clearing price occasionally may be non-unique. A Stackelberg leading producer is present. Given that setting we explore continuity properties of the followers' reaction and provide sufficient conditions for existence of equilibrium.

We exhibit a quite natural, adaptive process generated by price-taking, noncooperative firms, supply the same market. Under rather mild conditions, that process. being driven by marginal profits, converges to a market clearing, Cournot-Nash equilibrium. Namely, it suffices for convergence that...

We exhibit a quite natural, adaptive process generated by price-taking, noncooperative firms, supplying the same market. Under rather mild conditions, that process, being driven by marginal profits, converges to a market clearing, Cournot-Nash equilibrium. Namely, it suffices for convergence...