Igal Milchtaich










Igal Milchtaich

Department of Economics

Building 504 Room 201

Bar-Ilan University

Ramat Gan 5290002


Phone: +972 3 5318944



Teaching and Seminars

Hebrew homepage

Bar-Ilan Game Theory Seminar

Bar-Ilan Summertime Seminar


Research Interests

Game Theory
Microeconomic Theory
Social Choice
Applications to Biology

Published Papers

Instability of Defection in the Prisoner’s Dilemma Under Best Experienced Payoff Dynamics (with Srinivas Arigapudi and Yuval Heller). Forthcoming in the Journal of Economic Theory. (Abstract)

Internalization of Social Cost in Congestion Games. Economic Theory 71 (2021), 717–760. (Abstract)

Strategic Signaling for Selling Information Goods (with Shani Alkoby and David Sarne). Proceedings of the Twenty-Eighth International Joint Conference on Artificial Intelligence (2019), 25-31. (Abstract)

Polyequilibrium. Games and Economic Behavior 113 (2019), 339–355. (Abstract)

Strategic Signaling and Free Information Disclosure in Auctions (with Shani Alkoby and David Sarne). Proceedings of the Thirty-First AAAI Conference on Artificial Intelligence (2017), 319–327. (Abstract)

Network Topology and Equilibrium Existence in Weighted Network Congestion Games. International Journal of Game Theory 44 (2015), 515–541. (Abstract)

Implementability of Correlated and Communication Equilibrium Outcomes in Incomplete Information Games. International Journal of Game Theory 43 (2014), 283–350. (Abstract)

Property Rights Under Administrator-Dictators: The Rise and Fall of America’s First Bank (with Dror Goldberg). Journal of Economic History 73 (2013), 1105–1131. (Abstract)

Representation of Finite Games as Network Congestion Games. International Journal of Game Theory 42 (2013), 1085–1096. (Abstract)

Comparative Statics of Altruism and Spite. Games and Economic Behavior 75 (2012), 809–831. (Abstract)

Auctions With a Random Number of Identical Bidders (with Moshe Haviv). Economics Letters 114 (2012), 143–146. (Abstract)

Weighted Congestion Games With Separable Preferences. Games and Economic Behavior 67 (2009), 750–757. (Abstract)

Congestion Games with Player-Specific Constants (with Marios Mavronicolas, Burkhard Monien and Karsten Tiemann). Lecture Notes in Computer Science 4708 (2007), 633–644. (Abstract)

Ambiguous Political Power and Contest Efforts (with Gil Epstein, Shmuel Nitzan and Mordechai Schwarz). Public Choice 132 (2007), 113–123. (Abstract)

First and Second Best Voting Rules in Committees (with Ruth Ben-Yashar). Social Choice and Welfare 29 (2007), 453–486. (Abstract)

The Equilibrium Existence Problem in Finite Network Congestion Games. Lecture Notes in Computer Science 4286 (2006), 87–98. (Abstract)

Network Topology and the Efficiency of Equilibrium. Games and Economic Behavior 57 (2006), 321–346. (Abstract)

Computation of Completely Mixed Equilibrium Payoffs in Bimatrix Games. International Game Theory Review 8 (2006), 483–487. (Abstract)

Comparative Statics of Games Between Relatives. Theoretical Population Biology 69 (2006), 203–210. (Abstract)

Topological Conditions for Uniqueness of Equilibrium in Networks. Mathematics of Operations Research 30 (2005), 225–244. (Abstract)

Random-Player Games. Games and Economic Behavior 47 (2004), 353–388. (Abstract)

Social Optimality and Cooperation in Nonatomic Congestion games. Journal of Economic Theory 114 (2004), 56–87. (Abstract)

Stability and Segregation in Group Formation (with Eyal Winter). Games and Economic Behavior 38 (2002), 318–346. (Abstract)

Generic Uniqueness of Equilibrium in Large Crowding Games. Mathematics of Operations Research 25 (2000), 349–364. (Abstract)

Vector Measure Games Based on Measures with Values in an Infinite Dimensional Vector Space. Games and Economic Behavior 24 (1998), 25–46. (Abstract)

Crowding Games are Sequentially Solvable. International Journal of Game Theory 27 (1998), 501–509. (Abstract)

Congestion Models of Competition. The American Naturalist 147 (1996), 760–783. (Abstract)

Congestion Games with Player-Specific Payoff Functions. Games and Economic Behavior 13 (1996), 111–124. (Abstract)

A General Approach to Genetic Equilibria with an Uneven Sex Ratio. Journal of Theoretical Biology 157 (1992), 373–381. (Abstract)


Working Papers

Best-Response Equilibrium: An Equilibrium in Finitely Additive Mixed Strategies. Bar-Ilan University, Research Institute for Econometrics and Economic Theory, Working Paper 2-20, June 2020. (Abstract)

Static Stability in Games. Bar-Ilan University, Research Institute for Econometrics and Economic Theory, Working Paper 1-20, April 2020. (Abstract)

Agnostic Sequential Rationality. (Abstract)

Correlated Polyequilibrium. (Abstract)

Games with Congestion-Averse and Congestion-Seeking Players (with Anna Zalkind). (Abstract)

Acyclic and Weakly Acyclic Games: A Concise Review. (Abstract)

Time-Differentiated Monopolies (with Amihai Glazer and Refael Hassin). (Abstract)

The Seven Good Years: On the Economics of Hoarding.

On Some Saddle Point Matrices and Applications to Completely Mixed Equilibrium in Bimatrix Games (with Tadeusz Ostrowski).

Acquired Cooperation in Finite-Horizon Dynamic Games (with Avi Weiss). Bar-Ilan University, Department of Economics Working Paper 2002-11, April 2002.