Oligopoly and consistent conjectural variations
Oligopoly and consistent conjectural variations
复制标题
寡头垄断和一致的推测变化
DOI：
10.2307/3003440
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发表时间：
1980
期刊：
影响因子：
--
通讯作者：
M. Perry
中科院分区：
文献类型：
--
作者：
M. Perry
本文研究了同质产品的寡头垄断模型中的“一致”结构变化。一个理性的变化是一致的，如果它是等价于其他公司在该猜想所定义的均衡的最佳反应。当厂商数量一定时，当边际成本不变时，竞争行为是一致的，而当边际成本上升时，竞争行为和古诺行为之间的一致性变化将发生。最后，如果我们允许自由进入并重新定义一致性来解释这种情况，那么只有竞争行为才会是一致的。
This article examines "consistent" conjectural variations in an oligopoly model with a homogeneous product. A conjectural variation is consistent if it is equivalent to the optimal response of the other firms at the equilibrium defined by that conjecture. When the number of firms is fixed, we find that competitive behavior is consistent when marginal costs are constant, but that when marginal costs are rising, the consistent conjectural variation will be between competitive and Cournot behavior. Finally, if we allow free entry and redefine consistency to account for such, then only competitive behavior will be consistent.