This paper discusses various proposals to handle measures of flexicurity or lifelong learning. A critical reading of their theoretical foundations, and their consequences on the labour market is set out. The claim to give an answer to the unemployment by using these measures is contested. Having...

Given an instance of a weighted combinatorial optimization problem and its feasible solution, the usual inverse problem is to modify as little as possible (with respect to a fixed norm) the given weight system to make the given feasible solution optimal. We focus on its 0-1 version, which is to...

The paper extends the canonical representative agent Ramsey model to include heterogeneous agents and elastic labor supply. The welfare maximization problem is analyzed and shown to be equivalent to a non-stationary reduced form model. An iterative procedure is exploited to prove the...

This work is concerned in the existence problem of equilibria for economies with increasing returns to scale. The consequences of relaxing the free disposal assumption are investigated. It is sown that the free disposal assumption can not be dropped, not even relaxed to the assumption of free...

In a recent paper, Bouleau provides a new tool, based on the language of Dirichlet forms, to study the errors propagation and reinforce the historical approach of Gauss. As the classical central limit theorem is a theoric justification of the employment of normal laws in statistics, the aim of...

We show that if K is a closed cone in a finite dimensional vector space X, then there exists a one-to-one linear operator T : X - C[0,1] such that K is the pull-back cone of the positive cone of C[0,1], i.e., K = T (C+ [0,1]). This problem originated from questions regarding arbitrage free...

This paper sums up the Marxian analysis of the capitalist exploitation process. The double aspect of direction is emphasized. Notions of formal and real exploitation are used to show that division of labor is less the way to improve productivity than to increase the capital's share of the...

This paper deals with the consequences of the existence of private employment agencies on the labor market. Using a matching framework, we study the conditions of existence of private employment agencies and the consequences of competition on the market for job placement. We show that the...

We estimate the impact of workplace union on gender wage gap on the French labour market. The aim of our study is to control if unions have put a lot of effort into promoting gender wage equality. Using 1992 data, we compare the gender wage gap unexplained by differences in observable...

This paper develops a simple model of optimal growth with renewable resource and endogenous discounting. Relaxing the time-additivity preference hypothesis allows to make endogenous the rate of time preference and to reconsider the dynamics of models with concave resource. The possibility of...