Workshop on Theory and Design of Collective Decision-Making

Workshop on Voting, Bargaining, and Matching, November 21


9h30 – 9h40: Welcome

9h40 – 11h00: Session 1 (Chair: Federico Valenciano)

  •  Remzi Sanver: A General Impossibility Result on Strategy-Proof Social Choice Hyperfunctions - joint work with Selcuk Ozyurt.
  •  Rahhal Lahrach: Assessing the probability of the referendum paradox:  the French local election case

11h00 – 11h30: coffee break

11h30 – 12h50: Session 2 (Chair: Annick Laruelle)

  • Jean Lainé: Is approval balloting that bad? Joint with Gilbert Laffond
  •  Elena Molis: How rational agents behave when they look for a partner: Experimental results

12h50 – 15h20: Lunch

15h20 – 16h00: Session 3 (Chair: Elena Iñarra)

  •  Ipek Ozkal-Sanver: Nash implementability of tournament solutions - joint work with Remzi Sanver

16h00 –16h20: coffee

16h20 – 17h40: Session 4 (Chair: Elena Iñarra)

  • Raissa Samba Zitou: Strategy-proof in the Mixed matching market with stable sub-constraint outcomes 
  • Vincent Merlin: The U.S. electoral college and probability of disputable outcomes under direct and indirect elections- joint work with Jack Nagel

21.00: Dinner (Restaurant Etxanobe, Palacio de Euskalduna)



Elena Iñarra (University of the Basque Country)

Bettina Klaus (University of Maastricht)

Gilbert Laffond (CNAM, Paris)

Rahhal Lahrach (University of Caen-Basse Normandie)

Jean Lainé (ENSAI, Rennes)

Annick Laruelle (Ikerbasque and University of the Basque Country)

Vincent Merlin (CNRS and University of Caen-Basse Normandie)

Elena Molis (Facultés Universitaires Saint-Louis)

Ipek Özkal-Sanver (University of Bilgi, Istanbul)

Raissa Samba (University of Caen-Basse Normandie)

Remzi Sanver (University of Bilgi, Istanbul)

Federico Valenciano (University of the Basque Country)



Acción Integrada HF-2006-0021/EGIDE-Picasso



Annick Laruelle (

Federico Valenciano (


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