Existence and optimality of Cournot-Nash equilibria in a bilateral oligopoly with atoms and an atomless part

被引：4

作者：

Busetto, Francesca ^{[1
]}

Codognato, Giulio ^{[1
,2
]}

Ghosal, Sayantan ^{[3
]}

Julien, Ludovic ^{[2
]}

Tonin, Simone ^{[1
]}

机构：

[1] Univ Udine, Dipartimento Sci Econ & Stat, I-33100 Udine, Italy

[2] Univ Paris Nanterre, CNRS, Economix, UPL, F-92000 Nanterre, France

[3] Univ Glasgow, Adam Smith Business Sch, Glasgow G12 8QQ, Lanark, Scotland

来源：

INTERNATIONAL JOURNAL OF GAME THEORY | 2020年 / 49卷 / 04期

关键词：

Bilateral oligopoly; Cournot-Nash equilibrium; Pareto optimality; NON-COOPERATIVE EQUILIBRIA; STRATEGIC MARKET GAMES; NONCOOPERATIVE OLIGOPOLY; TRADING ECONOMY; CONTINUUM; INEFFICIENCY; EFFICIENCY;

D O I：

10.1007/s00182-020-00719-z

中图分类号：

F [经济];

学科分类号：

02 ;

摘要：

We consider a bilateral oligopoly version of the Shapley window model with large traders, represented as atoms, and small traders, represented by an atomless part. For this model, we provide a general existence proof of a Cournot-Nash equilibrium that allows one of the two commodities to be held only by atoms. Then, we show, using a corollary proved by Shitovitz (Econometrica 41:467-501, 1973), that a Cournot-Nash allocation is Pareto optimal if and only if it is a Walras allocation.

引用

页码：933 / 951

页数：19

共 40 条

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Giulio Codognato
Sayantan Ghosal
Ludovic Julien
Simone Tonin
[J]. International Journal of Game Theory, 2020, 49 : 933 - 951
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