Alexandru Nichifor

Serial dictatorship mechanisms with reservation prices: heterogeneous objects

Bettina Klaus, Alexandru Nichifor

Journal article  |  2021  |  SOCIAL CHOICE AND WELFARE

We adapt a set of mechanisms introduced by Klaus and Nichifor (Econ Theory 70:665-684, 2020), serial dictatorship mechanisms with ..

Chain stability in trading networks

John William Hatfield, Scott Duke Kominers, Alexandru Nichifor, Michael Ostrovsky, Alexander Westkamp

Journal article  |  2021  |  THEORETICAL ECONOMICS

In a general model of trading networks with bilateral contracts, we propose a suitably adapted chain stability concept that plays ..

Comparative statics for size-dependent discounts in matching markets

D Delacrétaz, SD Kominers, A Nichifor

Journal article  |  2020  |  Journal of Mathematical Economics

We prove a natural comparative static for many-to-many matching markets in which agents’ choice functions exhibit size-dependent d..

Serial dictatorship mechanisms with reservation prices

Bettina Klaus, Alexandru Nichifor

Journal article  |  2020  |  Economic Theory

We propose a new set of mechanisms, which we call serial dictatorship mechanisms with individual reservation prices for the alloca..

Full substitutability

John William Hatfield, Scott Duke Kominers, Alexandru Nichifor, Michael Ostrovsky, Alexander Westkamp

Journal article  |  2019  |  Theoretical Economics

Various forms of substitutability are essential for establishing the existence of equilibria and other useful properties in divers..

Chain Stability in Trading Networks

John William Hatfield, Scott Duke Kominers, Alexandru Nichifor, Michael Ostrovsky, Alexander Westkamp

Conference Proceedings  |  2018  |  ACM EC'18: Proceedings of the 2018 ACM Conference On Economics and Computation

We consider general trading networks with bilateral contracts. We show that a suitably adapted chain stability concept is equivale..

Serial Dictatorship Mechanisms with Reservation Prices

A Nichifor, B Klaus

Report  |  2017  |  Economic Theory

We propose a new set of mechanisms, which we call serial dictatorship mechanisms with reservation prices for the allocation of one..

Chain Stability in Trading Networks

A NICHIFOR, J Hatfield, S Kominers, M Ostrovsky, A Westkamp

Report  |  2017

We show that in general trading networks with bilateral contracts, a suitably adapted chain stability concept (Ostrovsky, 2008) is..

Full Substitutability

A Nichifor, S Kominers, J Hatfield, M Ostrovsky, A Westkamp

Report  |  2017

Targeted vs. Collective Information Sharing in Social Networks

A NICHIFOR, A Kushnir

Report  |  2014