作者：Götz, G
作者单位：University of Vienna
摘要：This article analyzes the adoption and diffusion of new technology in a market for a differentiated product with monopolistic competition, I show that in a noncooperative equilibrium ex ante identical firms adopt a new technology at different dates. This equilibrium can be described by a simple distribution function. For nonidentical firms, I state the conditions under which a positive relationship between firm size and speed of adoption exists. The model integrates rank and stock effects, I d...
作者：Anderson, SP; Renault, R
作者单位：University of Virginia; Universite de Caen Normandie
摘要：We study price competition in the presence of search costs and product differentiation. The limit cases of the model are the Bertrand Paradox, the Diamond Paradox, and Chamberlinian monopolistic competition. Market prices rise with search costs and decrease with the number of firms. Prices may initially fall with the degree of product differentiation because more diversity leads to more search and hence more competition. Equilibrium diversity rises with search costs, while the optimum level fa...
