G. Th. Guilbaud et la théorie du choix social

One year after the publication of Arrow's 1951 book Social Choice and Individual Values, Guilbaud (1912-2006) published in Economie Appliquee a 50 page's paper entitled Les theories de l'interet general et le probleme logique de l'agregation. In this paper -unfortunately too little known- first he dragged from a deep oblivion Condorcet's Essai sur l'application de l'analyse a la probabilite des decisions rendues a la pluralite des voix and showed its interest. Then, he brought significant contributions doing of him a precursor of several futher developments of social choice theory. I present here these contributions and how they have been precursory.