We study properties of the solutions to a parametrized constrained optimization problem in Hilbert spaces. A special operator is studied which is of importance in economic theory; sufficient conditions are given for its existence, symmetry, and negative semidefiniteness. The techniques used are...

This paper develops a dynamic model of North-South trade in which environment plays an important role. Our model is based on Chichilnisky North-South model for the macroeconomic interaction between two sectors of the world economy. The latter was introduced in a static context. We introduce...

Given the poor economic performance of Guinea-Bissau over the last few years, including a severe recession toward the end of 2002, poverty is likely to be high and to have risen in recent years even compared to its high postconflict level. The first objective of this chapter is to estimate the...

Oil price behavior has changed dramatically in the last twenty years. These changes can be explained rather simply in terms of the delayed responses of supply and demand to prices, and in terms of changes in the rate of discovery of reserves. This analysis can be used to forecast possible future...

This chapter offers a primer on poverty, inequality, and vulnerability analysis and a guide to resources on this topic. It is written for decision makers who want to define the type of information they need to monitor poverty reduction and make appropriate policy decisions and for the technical...

This paper shows that in Belgium, programs to prevent electricity cuts among the poor often do not reach the poorest. This is less because the poorest cannot benefit from the programs (if they apply, they almost always are granted benefits) than because they often fail to apply for the programs....

This paper revisits the aggregation theorem of Chichilnisky (1980), replacing the original smooth topology by the closed convergence topology and responding to several comments (N. Baigent (1984, 1985, 1987, 1989), N. Baigent and P. Huang (1990) and M. LeBreton and J. Uriarte (1900 a, b)....

Cape Verde shifted from a socialist to a capitalistic model in the late 1980s. This shift enabled the population to benefit from rapid economic growth, but concerns have been expressed about a potential increase in inequality. Two household surveys with consumption data implemented in 1988–89...

The paper proposes two axioms that capture the idea of sustainable development and derives the welfare criterion that they imply. The axioms require that neither the present nor the future should play a dictatorial role. Theorem 1 shows there exist sustainable preferences, which satisfy these...

This chapter offers a primer on poverty, inequality, and vulnerability analysis and a guide to resources on this topic. It is written for decision makers who want to define the type of information they need to monitor poverty reduction and make appropriate policy decisions and for the technical...