In this paper we use the concept of distributable surplus, introduced by Allais (1943) and Luenberger (1992), to evaluate the capacity of European countries to repay their debts. We first show that the surplus generated between 2005 and 2009 was not sufficient to cover the 2009 deficit for...

The h-index is an index recently proposed by Hirsch (2005) to measure scientific achievement by individual scholars. It is a compound measure of publications and citations. We show the robustness of this index. This means that h-index increases with both the number of publications and the number...

The benefit function, introduced by Luenberger, provides a tool for well-defined cardinal comparisons of different bundles of goods. It also allows to study in an orignal way optimal consumers and firms choices, Pareto-optimality etc... In this note we prove that the benefit function is...

The proposition 1 of our paper "On the differentiability of the benefit function" (Economics Bulletin, March, 24) is incorrect under the assumption 1. We provide two alternative versions of this assumption under which the statement of proposition 1 holds true.

The proposition 1 of our paper "On the differentiability of the benefit function" (Economics Bulletin, March, 24) is incorrect under the assumption 1. We provide two alternative versions of this assumption under which the statement of proposition 1 holds true.

The h-index is an index recently proposed by Hirsch (2005) to measure scientific achievement by individual scholars. It is a compound measure of publications and citations. We show the robustness of this index. This means that h-index increases with both the number of publications and the number...

The benefit function, introduced by Luenberger, provides a tool for well-defined cardinal comparisons of different bundles of goods. It also allows to study in an orignal way optimal consumers and firms choices, Pareto-optimality etc... In this note we prove that the benefit function is...

This paper aims at estimating the determinants of co-authorship in economics. More specifically, we test if there is a relationship between the efficiency in research of an individual and that of his co-authors using a novel database of French academics. The main empirical result is that the...