We apply Luce's choice axiomatic framework to oligopoly pricing of quality differentiated goods. The demand system is a probabilistic comparison of surpluses across products. Zero demands arise naturally, in contrast to the related CES and Mixed Logit models. With asymmetric products, high...

We propose an efficient algorithm that solves urban equilibrium with traffic congestion. The procedure we propose is based on the monocentric model, but we illustrate how it can be used in the case of more than one business center. As a case study we focus on the region of Paris and discuss the...

Many local public goods are allocated by federal governments using fixed regional shares: every region is entitled a fixed share of the total budget for a particular type of public good. This paper explores two characteristics of this type of allocation. First, it shows that this type of...