高维市场结构与创新

以往的创新研究局限于一维市场结构：所有企业的创新能力都一样，谁也不占有优势。实际上应根据企业不同的创新能力特征，分成若干种类型，形成高维市场结构，在此结构下研究创新竞争。本首先证明在高维市场结构下均衡点唯一；其次指出何种类型企业具有竞争优势，分析企业合资研究对竞争优势的影响；最后讨论竞争企业数量增加时均衡状态的变化，并将市场的结果与社会最优结果作比较。

Multidimensional Market Structure and Innovation

The past innovative competition is limited to the one-dimentional market structure. One firm is equal to another. No one is advantageous. As a matter of fact, all the firms can be divided into certain types according to the innovative capacity so that the multidimentional markeet structure is set up in which the innovative competition is researched into. In the paper, first the equilibrium is proved to be unique in the multidimentional market structure. Second, what type of firms is advantageous and an effect of the research joint ventures on competitive advantage are explained. Last, the change of equilibrium state is discussed when the number of competitive firms increases, and the market result is compared with that of social optimum.