Although Cournot's mathematical economics was generally neglected until the mid- 1870s, he was taken up and carefully studied by the Scientific Club of Cambridge, Massachusetts even before his "discovery" by Walras and Jevons. The episode is reconstructed from fragmentary manuscripts of the...

We study the gains from trade in a model with oligopolistic competition, heterogeneous firms and innovation, and provide a formula to decompose the mechanism. The new insight we provide is that market concentration can be a welfare-relevant feature of market power above and beyond markup...

Professions such as doctors and lawyers often enjoy some degree of self-regulation, i.e. they can set the codes of conduct in the market and even determine the rules for joining the profession. We address the problem of the optimal scope of self-regulation. Specifically, we model a profession...