7 papers
Stable Matching as Transport: a Welfarist Perspective on Market Design
Federico Echenique, Joseph Root, Fedor Sandomirskiy
This paper links matching markets with aligned preferences to optimal transport theory. We show that stability, efficiency, and fairness emerge as solutions to a parametric family…
A Separability Foundation for Random Coefficients Logit
Fedor Sandomirskiy, Po Hyun Sung, Omer Tamuz +1
We study stochastic choice across decision problems, each represented as a menu of action labels paired with observable outcome vectors. We propose a consistency condition for beha…
Delegation in Strategic Environments and Equilibrium Uniqueness
Fedor Sandomirskiy, Ben Wincelberg
We ask when a normal-form game yields a single equilibrium prediction, even if players can coordinate by delegating play to an intermediary such as a platform or a cartel. Delegati…
Monotonicity and Bracketing in Games
Fedor Sandomirskiy, Po Hyun Sung, Omer Tamuz +1
We study solution concepts for normal-form games. We obtain a characterization of Nash equilibria and logit quantal response equilibria, as well as generalizations capturing non-ex…
On the origin of the Boltzmann distribution
Fedor Sandomirskiy, Omer Tamuz
The family of Boltzmann distributions is used in statistical mechanics to describe the distribution of states in systems with a given temperature. We give a novel characterization…
Private Private Information
Kevin He, Fedor Sandomirskiy, Omer Tamuz
Private signals model noisy information about an unknown state. Although these signals are called "private," they may still carry information about each other. Our paper introduces…