We introduce here extensive form games which are the most accurate way of describing a strategic situation. We show how this model finds its place in the hallmark of strategic games. We give a proof of Kuhn's fundamental theorem for games of perfect recall, that is: every mixed strategy is...

In this paper, we show that the third inverse stochastic dominances introduced by Muliere and Scarsini (1989) is nicely connected with the Yaari's dual model. We show especially that the third inverse stochastic dominance is closely linked with the non-negativity of third derivative of the...

This paper investigates the stability of households' consumption behaviour in France through a prcedure of discriminating between feedback and feedforward models connected to the notions of encompassing in invariance initially proposed by Hendry (1988).

This paper presents a surprising example. It shows that lattice theoretic properties in Mas-Colell's (1986) seminal work are relevant to the existence of equilibrium problem even when commodity space is finite dimensional. The paper provides an example of an economy with three commodities and...

In order to get rid of the condition X=Y, we introduce an extension of the Dynkin game by allowing for an extended set of strategies, namely the set of mixed strategies. The main result of the paper is that the extended Dynkin game has a value when the processes X and Y are only restricted to be...

We shape a formal framework for distinguishing the behaviour of constructive and non-constructive polynomial time approximation algorithms for NP optimization problems. We introduce a new class, called SubNPO, that includes NPO and also some other problems used in recent works.

This paper (forthcoming in The Columbia Anthology of 20th Century French Thought), aims at presenting some important steps in the development of twentieth century French economic thought. More precisely, I suggest the way some nowadays neglected pieces of work can pave the way to fruitful...