Quelques repéres historiques sur la théorie des jeux

Résumé  L'article s'attache à dégager le fil rouge qui relie les réflexions de Wilhelm Gottfried Leibniz sur les jeux de société à la théorie des jeux, telle qu'on la trouve dans l'ouvrage de John Von Neumann et Oskar Morgenstern. L'itinéraire décrit passe par les travaux de plusieurs mathématiciens du XVIII^e siècle sur différents jeux de hasard, pour aboutir aux recherches de quelques-uns des fondateurs des mathématiques modernes, comme Ernst Zermelo pour la théorie des ensembles et émile Borel pour la théorie des probabilités. II montre comment une analyse mathématique des jeux de société a débouché sur l'élaboration d'une grille générale d'analyse des phénomènes sociaux. Son cheminement révèle, en outre, la longue parenthèse du XIX^e siècle où ce programme s'est trouvé abandonné et esquisse, en conclusion, quelques hypothèses pour l'expliquer. The paper strives to find the clue which links Leibniz' thoughts on parlour games to the mathematical theory of games in John Von Neumann and Oskar Morgenstern.Magna opera the way goes through the works of several XVIII^th century mathematicians on various games of chance to reach the research of some of the modern mathematics founders, as Ernst Zermelo for the sets theory and émile Borel for the theory of probabilities. The paper shows how a mathematical analysis of parlour games ends at a general framework to study the social phenomena. Its development also reveals how this research program has disappeared, all along the XIX^th century, and suggests, in conclusion, some tentative explanations of this development. Une version préliminaire de cet article a été publiée dans la revue de l'Association historique des élèves du lycée Henri IV,Jeu et histoire, n^o spéc.:L'émoi de l'histoire, 25–26, printempsautomne 2002, p. 94–115.     

Globalization and the closing of the universe of discourse: the contemporary relevance of Marcuse's “Marxism”1

This paper assumes that there is something in the logic of the capitalist mode of production such that, in the words of Marx and Engels' Communist Manifesto, it “must nestle everywhere, settle everywhere, establish connections everywhere,” giving a “cosmopolitan character to production and consumption in every country.” It assumes, that is, that there is an inherent tendency in capitalism to seek to globalize. Further, it is argued that one can plausibly claim that the capitalist mode of production has succeeded, or is succeeding, in globalizing against the countervailing forces of the managing state and organized labor. It is argued that this development represents, to use Marcuse's words, something like a “closing of the universe of discourse” or a “paralysis of criticism” and the emergence of a “society without opposition,” but in a context, in crucial respects, fundamentally different from that analysed by Marcuse in the 1960s.     

America as a European power: the end of empire by integration?

Is the postwar partnership between Europe and America now a historical artefact? Much depends on whether the notion of America as a ‘European power’ still holds. The US attained this status through a strategy of ‘empire by integration’, extending its postwar ‘empire’ through negotiation and support for European integration, and envisaging a collectively powerful Europe as fundamental to the health of its most important security alliance. The election of George W. Bush, the terrorist attacks of 9/11, and the war in Iraq are often seen as producing deep ruptures both in American policy towards Europe and the transatlantic alliance. Yet, the embrace of a new US policy of ‘disaggregation’ of Europe is unproven, and in any event unlikely to mark a permanent shift. The US and Europe are surprisingly close to agreement on ends for the international order. Conflict over Iraq has obscured a significant increase in policy cooperation and convergence of strategy in the war on terrorism.     

Late third‐millennium elite burials in Bahrain

Studies of old aerial photographs of the Bahrain burial mound fields have revealed that a small number of both Early Type (c. 2200–2050 BC) and Late Type (c. 2050–1750 BC) mounds are encircled by an outer ring wall, apparently marking out the mound as belonging to an elite. Four of these mounds have been excavated, and the results are presented. The geological differences between the Early Type and the Late Type mound landscapes are discussed.     

Communal Tenure and Rural Poverty: Land Transactions in Svosve Communal Area,Zimbabwe

The idea of communal tenure has formed a key plank in the rural governance of Zimbabwe since independence, but its retention following the Fast Track land reforms of 2000–2002 perpetuates a distinction between ‘commercial’ land governed by a land market and ‘communal’ land on which market transactions are illegal. This article draws on recent research in Svosve Communal Area to examine the dynamics of land access and their implications for rural poverty in Zimbabwe. The authors argue that, as in many other parts of Africa, access to land governed by customary authority in Svosve is increasingly commoditized via informal, or ‘vernacular’, sales or rental markets. In failing to acknowledge and address this commoditization of land, the ‘communitarian’ discourse of customary land rights that dominates the politics of land in Zimbabwe — as elsewhere in much of Africa — undermines, rather than protects, the livelihoods of the rural poor.     

Molecular markers for the discrimination of Triticum turgidum L. subsp. dicoccum (Schrank ex Schübl.) Thell. and Triticum timopheevii (Zhuk.) Zhuk. subsp. timopheevii

The persistent uncertainty on the classification of the “new” glume wheat found in Neolithic and Bronze Age sites from Greece and other European settlements might be resolved only through analysis of its ancient DNA. Tools able to discriminate among different Triticum species on the basis of scarce, very damaged DNA, are therefore essential. While current attempts concentrate on DNA fragments sequencing and comparison, in some instances PCR-based selective amplification techniques might offer a cheaper and quicker alternative. The purpose of this research was therefore the identification of species-specific primers, able to distinguish caryopses of Triticum timopheevii subsp. timopheevii from those of Triticum turgidum subsp. dicoccum. Primers and their working conditions were defined and optimized using DNA from modern accessions. The ribosomal primers ITS1 tim and ITS2 tim, and the nuclear primer acetyl-coenzyme A tim clearly discriminated the sequences of Triticum timopheevii from other species. Finally, Neolithic charred wheat grains found in the sites of Sammardenchia (Pozzuolo del Friuli, Udine) and La Marmotta (Lago di Bracciano, Roma), belonging to the “new” wheat type or to emmer, were tested with the three selected primers. However, the results were not conclusive, because the samples analysed were apparently too degraded to yield useful DNA.