This paper seeks to point out and to correct some mistakes of the conventional theory of imperfect competition based on partial equilibrium analysis. It extends to imperfect competition the classical model of general equilibrium, signaling the interconnections between individual prices and...

We address some open issues regarding the characterization of double auctions. Our model is a two-sided commodity market with either finitely or infinitely many traders. We first unify existing formulations for both finite and infinite markets and generalize the characterization of market...

I use the Prescott (1975) hotels model to explain variations in price dispersion across goods sold by supermarkets in Chicago. I extend the theory to accounts for the monopoly power of chains and for non-shoppers. The main empirical finding is that the effect of demand uncertainty on price...