Hello ! I am a PhD candidate in economics at Stanford University. Prior to joining Stanford, I studied at Ecole Polytechnique. I also hold master's degrees from ENSAE (in statistics) and from Institut Polytechnique de Paris/HEC Paris (in economics).
You can contact me at tordjman[at]stanford.edu.
I'm currently visiting the Hausdorff Institute for Mathematics at the University of Bonn.
I sometimes post piano-related things here.
Working Papers (by last update)
The Limits of Auctions under Ex-Ante Collusion (with R. Jagadeesan and I. Segal, 2026)
Revision requested at Econometrica
Ex-Ante Individually Rational Trade (with R. Jagadeesan, 2025)
Revision requested at AEJ: Micro
Axiomatics, personal judgments and fair sharing rules for conflicting water needs (with B. Ouvrard and A. Reynaud, 2023)
Work in Progress (alphabetical)
Corruption in Auctions: a Foundation for the Second-Price and Dutch Auctions (with T. Ayrapetyan)
Extended abstract to appear in the Proceedings of the 27th ACM Conference on Economics and Computation [EC'26]
Draft coming soon
Collusion-Robust Efficient Implementation: Holdout and the Anti-Core (with R. Jagadeesan and I. Segal)
Draft coming soon
Private Perspectives and Cancellation (with D. Chen and R. Sethi)
In progress
Efficient Implementation Beyond Expected-Utility: Risk-Rent Frontiers
In progress
Teaching
Stanford University
Teaching Assistant for Graduate Microeconomics II (Game Theory) - ECON 203
Instructor: Paul Milgrom - Winter 2026
Instructor for Economics Department Math Camp - Summer 2025