About Me

I am a PhD Candidate in Economics at HEC Paris. My research interest lie in microeconomic theory, game theory and social networks. I am particularly interested in the role of information and social structures in economic dynamics. Before starting my PhD I worked in consultancy developing mathematical models to solve industry and government problems in Colombia.

You can reach me by email at julian.chitiva [at] hec [dot] edu

You can find my CV here.

I am one of the organizers of the Junior Parisian Game Theory Seminar and the HEC PhD Economics Conference.

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Research

Job Market Paper

Sequential Redistribution in Networked Exchange Economies

Abstract: This paper studies sequential trade in networks. Completely connected groups of agents trade in local Walrasian exchanges, and the allocation after each exchange becomes the endowment for the next one. I show that, under quasilinear HARA preferences with common curvature, goods converge to the allocation of the centralised market whenever the relationships used infinitely often connect the economy. Therefore, the limit is Pareto efficient. However, relative to the centralised market, agents transfer numeraire to one another along the path. I obtain the leading term of these transfers in closed form for a repeated sequence of groups and for groups drawn at random, where their expected value is in general not zero. Hence, the sequence affects only the speed of convergence and the distribution of the numeraire. For speed, dividing a group into smaller ones can make convergence faster when a sequence repeats, but not when groups are drawn at random. For distribution, dividing a group can raise or lower redistribution.

Working Papers

Conference Papers

Pre-PhD Research (Non-Peer-Reviewed)

News and Events

  • Every two weeks we have the Junior Parisian Game Theory Seminar where students and postdocs can present their work in any area related to game theory work. If you want to present or want to be included in the mailing list, email me.

Presentations

  • 2026: Workshop on Game Theory and Behavioural Economics 2026 (Bergamo, Italy); 11th Annual Conference on Network Science and Economics (Miami, USA); Work-in-Progress Econ Theory Seminar LSE (London, UK); Networks Workshop Seminar at Cambridge University (Cambridge, UK); 9th BiNoMa Workshop on Economic Networks (Tilburg, Netherlands); Games and Artificial Intelligence Multidisciplinary Summer School and Workshop 2026 (Bonn, Germany); Transatlantic Theory Workshop (Evanston, USA).
  • 2025: Junior Paris Game Theory Seminar (Paris, France); 8th BiNoMa Workshop on Economic Networks (Granada, Spain); CES Networks and Games (Paris, France); Games and Artificial Intelligence Multidisciplinary Summer School and Workshop 2025 (Toulouse, France); Workshop on Game Theory and Behavioural Economics 2025 (El Tobar, Spain); 3rd Annual Meeting Colombian Economics Conference (Bogotá, Colombia).
  • 2024: Universidad de Valencia - Economics Department Seminar (Valencia, Spain); 9th Annual Conference on Network Science and Economics (Minneapolis, USA); 7th BiNoMa Workshop on Economic Networks (Rennes, France); Games and Artificial Intelligence Multidisciplinary Summer School and Workshop 2024 (Metz, France); CES Networks and Games (Paris, France); ASSET 2024 (Venice, Italy); Junior Workshop on Mathematical Game Theory (Rome, Italy); WINE 2024 (Edinburgh, Scotland), Optimization Workshop at Universidad de los Andes (Bogotá, Colombia).
  • 2023: Junior Paris Game Theory Seminar (Paris, France); 2nd Workshop in Dynamic Games and Applications (Paris, France).

Teaching Material