Optimal Transport and Cournot-Nash Equilibria

Blanchet, Adrien and Carlier, Guillaume (2015) Optimal Transport and Cournot-Nash Equilibria. Mathematics of Operations Research, vol.41 (n°1). pp. 125-145.

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Official URL: http://tse-fr.eu/pub/29913

Abstract

We study a class of games with a continuum of players for which a Cournot-Nash equilibria can be obtained by the minimisation of some cost related to optimal transport. This cost is not convex in the usual sense, in general, but it turns out to have hidden strict convexity properties in many relevant cases. This enables us to obtain new uniqueness results and a characterisation of equilibria in terms of some partial differential equations, a simple numerical scheme in dimension one as well as an analysis of the inefficiency of equilibria.

Item Type: Article
Language: English
Date: 16 July 2015
Refereed: Yes
Uncontrolled Keywords: Cournot-Nash equilibria, mean field games, optimal transport, externalities, Monge-Ampère equations, convexity along generalised geodesics
Subjects: B- ECONOMIE ET FINANCE
Divisions: TSE-R (Toulouse)
Site: UT1
Date Deposited: 18 Apr 2016 10:13
Last Modified: 07 Mar 2018 13:23
OAI ID: oai:tse-fr.eu:29913
URI: http://publications.ut-capitole.fr/id/eprint/18727

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