We show that there exist two Nash implementable social choice correspondences defined on an environment with strict preferences for which the intersection is not Nash implementable.

We give a dictatorial domain for monotone and unanimous social choice functions.

We examine the effects of price discrimination in the Stackelberg competition model for the linear demand case. We show that the leader does not use any price discrimination at all. Rather, the follower does all price discrimination. The leader directs all of its first mover preemptive advantage...

We examine the average equilibrium price when quantity setting oligopolies price discriminate. It is known that for the price discrimination extension of Cournot competition the average price is independent of the extent of price discrimination whenever the demand is linear. We show that this...

We make an extensive simulation analysis in order to investigate the consequences of ignoring the potentially complex and data dependent effects of allocative inefficiency on the estimation of stochastic frontier panel data models. Generally system estimators perform worse than single equation...

We estimate the time-varying average efficiencies of the US banks during 1984–1995 with four different efficiency estimators. Using these four series of efficiency estimates, we make a multivariate Kalman filter analysis to examine the efficiency trend in US banks during this period.

We use two ticket-level data sets on one-way domestic flights for the US airlines to examine the potentially nonlinear relationship between price dispersion and three forms of competition: inter-firm, inter-flight and frequency competitions. The linear relationship is rejected at any...

In the presence of market power in oligopolistic environment, price discrimination is a natural phenomenon. Surprisingly this setting has not been analyzed in depth in the literature. In contrast with existing literature, e.g., Hazledine (2006) and Kutlu (2009), we consider quantity setting...

We provide a framework for dealing with the endogeneity problem in the Battese-Coelli estimator for productive efficiency measurement.