CES Economic Theory Seminar


The Economic Theory workshop is a weekly seminar taking place on fridays 12-13h at the Maison des Sciences Economiques (106-110 Boulverd de l'Hopital). This seminar is a venue for theoretical work in Economics and for work drawing on quantitative methods in Economics. Defined by an approach rather than by a specific theme, the topics of the seminar can concern a variety of areas in Economics, such as (non exhaustively), micro economics, game theory, mathematical economics, decisions theory, finance or macro economics. The seminar functions as an internal workshop but also regularly greets speakers from other institutions.

If you want to be added to the seminar mailing list, or for any other query about the Economic Theory seminar, please feel free to contact Emily Tanimura (emily(dot)tanimura(at)univ-paris1(dot)fr) or Xavier Venel (xavier(dot)venel(at)univ-paris1(dot)fr).

It is supported by the Centre d'économie de la Sorbonne, CNRS and Université Paris 1 Panthéon-Sorbonne.


  • Friday 3 Mai 12h-13h


  • Friday 10 Mai 12h-13h

Centre d'Economie de la Sorbonne, Salle S/17

Markus Pivato (Université de Cergy-Pontoise)

Title : Does deliberation improve the reliability of epistemic democracy? (joint with Huihui Ding)

Abstract : We study the effects of deliberation on epistemic social choice, in two settings. In the first setting, the group faces a binary epistemic decision analogous to the Condorcet Jury Theorem. In the second setting, group members have probabilistic beliefs arising from their private information, and the group wants to aggregate these beliefs in a way that makes optimal use of this information. During deliberation, each agent discloses private information to persuade the other agents of her current views. But her views may also evolve over time, as she learns from other agents. This process will improve the performance of the group, but only under certain conditions; these involve the nature of the social decision rule, the group size, and also the presence of “neutral agents” whom the other agents try to persuade.

  • Friday 17 Mai 12h-13h

Pas de Séminaire (CTN Workshop)

  • Friday 24 Mai 12h-13h

Centre d'Economie de la Sorbonne, Salle S/17

Marc Barthelemy (CNRS, IPHT)

Title : Modeling car traffic in cities: effect of density and other critical factors (joint with Vincent Verbavatz)

Abstract : Car traffic in urban systems has been studied intensely in past decades but its analysis is often limited to empirical observations and agent-based modelling, and despite the importance and urgency of the problem we have a poor theoretical understanding of the parameters controlling urban car use and congestion. Here, we combine economical and transport ingredients into a statistical physics approach and propose a parsimonious model that predicts the share of car drivers, the CO2 emitted by cars and the average commuting time. We confirm these analytical predictions on 25 major urban areas in the world, and our results suggest that urban density is not the relevant variable controlling car-related quantities but rather are the city's area size and the density of public transport. Mitigating the traffic (and its effect such as CO2 emissions) can then be obtained by reducing the urbanized area size or, more realistically, by improving either the public transport density or its access. In general, increasing the population at fixed area would increase the emission of CO2 in sharp contrast with the commonly accepted paradigm that increasing the density leads to a reduction of car traffic.

  • Friday 31 Mai 12h-13h

Centre d'Economie de la Sorbonne, Salle S/17

Pont de l'Ascension