The Role of Free Entry in an Oligopolistic Heckscher-Ohlin Model
在赫克歇尔-俄林模型中加入古诺寡头垄断，发现自由进入和退出下要素价格均等化与比较优势定理仍成立；自由贸易降低寡头价格并提升福利，即使两国仅规模不同。
Retaining the basic properties of the Heckscher-Ohlin trade model, namely, free entry and exit, fully integrated international commodity markets, and the same number of sectors with that of factors, the authors develop a two-country model with Cournot oligopoly. In this economy, factor price equalization and the standard Heckscher-Ohlin theorem on comparative advantage hold. Between two countries which are identical except for size, however, autarkic prices are different even though the level of trade is zero under the free-trade regime. Nevertheless, free trade reduces the oligopoly price and increases welfare. Copyright 1995 by Economics Department of the University of Pennsylvania and the Osaka University Institute of Social and Economic Research Association.