both, the network of R&D collaborations as well as the market structure, are endogenously determined. We show that the … coevolution of market and network structure matter for the relationship between competition and innovation. Moreover, our model … allows us to explain differences in the R&D network structures observed across different industries, and how they are related …

initial adoption of their products by consumers located in a social network. The payoffs to the firms are the eventual number … of adoptions of their product through a competitive stochastic diffusion process in the network. This framework yields a … budgets of the players, and the underlying structure of the social network.We identify a general property of the adoption …

I generalize the work horse model of network competition (Armstrong,1998; Laffont, Rey and Tirole, 1998 a, b) to … charge a higher price for calls outside (off-net) than inside (on-net) the network. This vindicates the use of (a … perturbation of) the workhorse model of network competition …