We apply the notion of Nash Equilibrium, first, to some more coordination games; in particular, the Battle of the Sexes. Then we analyze the classic Cournot model of imperfect competition between firms. We consider the difficulties in colluding in such settings, and we discuss the welfare consequences of the Cournot equilibrium as compared to monopoly and perfect competition.

00:00:00 Coordination Games: Scope for Leadership and Strategic Complements
00:04:59 Coordination Games: The Battle of the Sexes
00:18:37 Cournot Duopoly: Math
00:53:28 Cournot Duopoly: Real World Examples

Source: Ben Polak, Game Theory (Yale University: Open Yale Courses). Licensed under CC BY-NC-SA 3.0.