A model of multiproduct price competition
成果类型：
Article; Proceedings Paper
署名作者：
Tauman, Y; Urbano, A; Watanabe, J
署名单位：
State University of New York (SUNY) System; Stony Brook University; Tel Aviv University; University of Valencia; Fukuoka University
刊物名称：
JOURNAL OF ECONOMIC THEORY
ISSN/ISSBN：
0022-0531
DOI：
10.1006/jeth.1997.2331
发表日期：
1997
页码：
377-401
关键词：
摘要：
We provide a simple model of price competition in a multiproduct oligopoly market. The products are of general nature. We find that a pure strategy equilibrium exists and every equilibrium consumption maximizes the total social surplus. Consumers are characterized by a set function which determines their willingness to pay for every subset of products. If this function is convex, the set of equilibrium prices coincides with the core of a cooperative game generated by this set function and the firms extract total industry surplus. If it is concave, the only equilibrium price of a product is its marginal contribution to the consumer's total willingness to pay. (C) 1997 Academic Press.