Today's wide economic gap between the postindustrial countries of the West and the poorer countries of the third world is not new. Fifty years ago, the world economic order--two hundred years in the making--was already characterized by a vast difference in per capita income between rich and poor...

Today's wide economic gap between the postindustrial countries of the West and the poorer countries of the third world is not new. Fifty years ago, the world economic order--two hundred years in the making--was already characterized by a vast difference in per capita income between rich and poor...

In this paper I describe group theoretic methods that can be used for analyzing the boundary problems, which arise when the Hamiltonian method is applied to solve the relaxed problem for the multidimensional screening problem. This technique can provide some useful insights into the structure of...