We wish to study optimal dynamic nonlinear income taxes. Do real world taxes share some of their features? What policy prescriptions can be made? We study a two period model, where the consumers and government each have separate budget constraints in the two periods, so income cannot be...

How is long run economic growth related to the endogenous diversity of knowledge? We formulate and study a microeconomic model of knowledge creation, through the interactions among a group of heterogeneous research and development (R&D) workers, embedded in a growth model to address this...

We make two main contributions to the theory of optimal income taxation. First, assuming conditions sufficient for existence of a Pareto optimal income tax and public goods mechanism, we show that if agents’ preferences satisfy an extended notion of single crossing called capacity constrained...

We develop a model with a finite number of households and congestable local public goods where the level of provision, the number of facilities and their locations are all endogenously determined. We prove that an equal-treatment identical-provision second-best optimum exists, where all...

Conventional wisdom tells us that with no market failure and local non- satiation of preferences, the core is at least as large as the collection of competitive equilibrium allocations. We confirm this for a standard model featuring land. Next we consider the public land ownership version of the...

We offer a guide to the recent literature on the problem of fair allocation, and we present various concepts that have been developed in this literature and the various economic environments in the context of which they have been analyzed.