The assumption of log-concavity is a flexible and appealing non-parametric shape constraint in distribution modelling. In this work, we study the log-concave maximum likelihood estimator of a probability mass function. We show that the maximum likelihood estimator is strongly consistent and we...

This paper is devoted to a new approach of differential games with state constraints. We explain a new method, general enough to study discontinuous problems but efficient enough to provide numerical schemes. We present this method in a game of kind: the target problem and in a game of degree:...

Accompagnement destiné à améliorer la performance d'individus, le coaching est à la mode dans les entreprises, et largement nourri de pratiques venant du sport.

We explore which financial constraints matter the most in the choice of becoming an entrepreneur. We consider a randomly assigned welfare program in rural Mexico and show that cash transfers signi cantly increase entry into entrepreneurship. We then exploit the cross-household variation in the...

This article is devoted to a survey of results for differential games obtained through Viability Theory. We recall the basic theory for differential games (obtained in the 1990s), but we also give an overview of recent advances in the following areas : games with hard constraints, stochastic...