These original essays focus on a wide range of topics related to Frank Hahn's distinguished work in economics. Ranging from market analysis and game theory to the microeconomic foundations of macroeconomics and from equilibrium and optimality with missing markets to economics and society, they...

This article applies economic analysis to rural households in poor countries to see what one may mean by a "population problem." It is argued that there is a serious population problem in certain regions of the world, and that it is in varying degrees linked to poverty, to gender inequalities in...

In this article the authors define sustainable development as an economic programme along which social well-being does not decline over time. It can be shown that the requirement is equivalent to the maintenance of a comprehensive measure of wealth, where an economy’s wealth is defined to...

We exhibit an efficient auction (an auction that maximizes surplus conditional on all available information). For private values, the Vickrey auction (for one good) or its Groves-Clarke extension (for multiple goods) is efficient. We show that the Vickrey and Groves-Clarke auctions can be...

This paper studies the nature and consequences of competition in R&D and the relationship between this form of competition and competition in the product market, by focusing on comparisons of speed of research, number of independent research laboratories, and the level of risk undertaken. Among...