In this note, we extend the Goyal and Joshi's model of network of collaboration in oligopoly to multi-market situations …

network is always pairwise stable and the partially connected network is stable if and only if spillovers are large enough. If … spillovers are small, the complete network is the efficient network; otherwise, the efficient network is the partially connected … network. Thus, a conflict between stability and efficiency may occur: efficient networks are pairwise stable, but the reverse …

In this note, we extend the Goyal and Joshi’s model of network of collaboration in oligopoly to multi-market situations …

The result that firms competing in a Cournot oligopoly with pairwise collaboration form a complete network under zero …

We develop a model of endogenous network formation in order to examine the incentives for R&D collaboration in a mixed … oligopoly. Our analysis reveals that the complete network, where each firm collaborates with all others, is uniquely stable …. When R&D subsidies are not available, in addition to the complete network, the private partial and the private-hub star …

network is likely to emerge in the long run if and only if knowledge spillovers are large enough. However, when unions settle … wages, the complete network is the unique stable network. In other words, the stronger the union bargaining power is, the … more symmetric stable R&D networks will be. In terms of network efficiency, the partially connected network (when firms …

differentiation and link costs: (i) the non-exclusive distribution & non-exclusive dealing network in which both retailers distribute … distribution & exclusive dealing network in which each retailer distributes a different product is stable for low degrees of … product differentiation; (iii) the mixed distribution network in which one retailer distributes both products while the other …