67 citations · 151 across the 14 of their papers we have counts for
15 papers
The Economics of Equilibrium with Indivisible Goods
Ravi Jagadeesan, Alexander Teytelboym
This paper develops a theory of competitive equilibrium with indivisible goods based entirely on economic conditions on demand. The key idea is to analyze complementarity and subst…
Optimizing Sponsored Humanitarian Parole
Fatemeh Farajzadeh, Ryan B. Killea, Alexander Teytelboym +1
The United States has introduced a special humanitarian parole process for Ukrainian citizens in response to Russia 2022 invasion of Ukraine. To qualify for parole, Ukrainian appli…
Identifying key players in dark web marketplaces
Elohim Fonseca dos Reis, Alexander Teytelboym, Abeer ElBahraw +2
Dark web marketplaces have been a significant outlet for illicit trade, serving millions of users worldwide for over a decade. However, not all users are the same. This paper aims…
Dynamic Combinatorial Assignment
Thành Nguyen, Alexander Teytelboym, Shai Vardi
We study a model of dynamic combinatorial assignment of indivisible objects without money. We introduce a new solution concept called ``dynamic approximate competitive equilibrium…
The Combinatorial Multi-Round Ascending Auction
Bernhard Kasberger, Alexander Teytelboym
The Combinatorial Multi-Round Ascending Auction (CMRA) is a new auction format used in recent European spectrum auctions. We show that an auction-specific version of truthful biddi…
Macroscopic properties of buyer-seller networks in online marketplaces
Alberto Bracci, Jörn Boehnke, Abeer ElBahrawy +3
Online marketplaces are the main engines of legal and illegal e-commerce, yet their empirical properties are poorly understood due to the absence of large-scale data. We analyze tw…
Emergence and structure of decentralised trade networks around dark web marketplaces
Matthieu Nadini, Alberto Bracci, Abeer ElBahrawy +3
Dark web marketplaces (DWMs) are online platforms that facilitate illicit trade among millions of users generating billions of dollars in annual revenue. Recently, two interview-ba…
Dynamic Placement in Refugee Resettlement
Narges Ahani, Paul Gölz, Ariel D. Procaccia +2
Employment outcomes of resettled refugees depend strongly on where they are placed inside the host country. Each week, a resettlement agency is assigned a batch of refugees by the…
The illicit trade of COVID-19 vaccines on the dark web
Alberto Bracci, Matthieu Nadini, Maxwell Aliapoulios +5
Early analyses revealed that dark web marketplaces (DWMs) started offering COVID-19 related products (e.g., masks and COVID-19 tests) as soon as the COVID-19 pandemic started, when…
Adaptive Combinatorial Allocation
Maximilian Kasy, Alexander Teytelboym
We consider settings where an allocation has to be chosen repeatedly, returns are unknown but can be learned, and decisions are subject to constraints. Our model covers two-sided a…
Dark Web Marketplaces and COVID-19: before the vaccine
Alberto Bracci, Matthieu Nadini, Maxwell Aliapoulios +5
The COVID-19 pandemic has reshaped the demand for goods and services worldwide. The combination of a public health emergency, economic distress, and misinformation-driven panic hav…
The Equilibrium Existence Duality: Equilibrium with Indivisibilities & Income Effects
Elizabeth Baldwin, Omer Edhan, Ravi Jagadeesan +2
We show that, with indivisible goods, the existence of competitive equilibrium fundamentally depends on agents' substitution effects, not their income effects. Our Equilibrium Exis…
Collective Dynamics of Dark Web Marketplaces
Abeer ElBahrawy, Laura Alessandretti, Leonid Rusnac +3
Dark markets are commercial websites that use Bitcoin to sell or broker transactions involving drugs, weapons, and other illicit goods. Being illegal, they do not offer any user pr…
Complexity of Stability in Trading Networks
Tamás Fleiner, Zsuzsanna Jankó, Ildikó Schlotter +1
Efficient computability is an important property of solution concepts in matching markets. We consider the computational complexity of finding and verifying various solution concep…
Interpreting Economic Complexity
Penny Mealy, J. Doyne Farmer, Alexander Teytelboym
Two network measures known as the Economic Complexity Index (ECI) and Product Complexity Index (PCI) have provided important insights into patterns of economic development. We show…