Generic regularity of differentiated product oligopolies
Generic regularity of differentiated product oligopolies
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差异化产品寡头垄断的一般规律
DOI:
10.1007/s00199-020-01249-1
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发表时间:
2020
期刊:
影响因子:
1.3
通讯作者:
Zierhut
中科院分区:
文献类型:
--
作者:
Zierhut
In oligopoly models with differentiated products, producers face a market demand function that reflects the preferences of consumers. However, typical assumptions on preferences place only weak restrictions on the shape of aggregate demand. This may result in profit functions that are not strictly quasiconcave, in best-reply correspondences that are not differentiable, and in equilibria that are not robust to perturbations. This paper establishes differentiability and robustness as a generic property: for an open, dense set of economies, best replies are differentiable in a neighborhood of equilibria, which is a precondition for comparative statics. All these economies have a finite number of equilibria in pure strategies.
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DOI:
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发表时间:
2003
期刊:
影响因子:
--
作者:
J. Bonnisseau
通讯作者:
J. Bonnisseau
DOI:
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发表时间:
1972
期刊:
影响因子:
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作者:
W. Hildenbrand;Jean
通讯作者:
Jean
DOI:
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发表时间:
1994
期刊:
影响因子:
--
作者:
B. Allen
通讯作者:
B. Allen
DOI:
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发表时间:
2002
期刊:
影响因子:
--
作者:
T. Hens;B. Pilgrim
通讯作者:
B. Pilgrim
DOI:
--
发表时间:
1974
期刊:
影响因子:
--
作者:
G. Fuchs
通讯作者:
G. Fuchs