Multiproduct-Firm Oligopoly: An Aggregative Games Approach

@article{Nocke2016MultiproductFirmOA,
  title={Multiproduct-Firm Oligopoly: An Aggregative Games Approach},
  author={Volker Nocke and N. Schutz},
  journal={CEPR Discussion Paper Series},
  year={2016}
}
We develop an aggregative games approach to study oligopolistic price competition with multiproduct firms. We introduce a new class of demand systems, derived from discrete/continuous choice, and nesting CES and logit demand systems. The associated pricing game with multiproduct firms is aggregative and a firm's optimal price vector can be summarized by a uni-dimensional sufficient statistic, the iota-markup. We prove existence of equilibrium using a nested fixed-point argument, and provide… Expand
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