predominance of star-like structures in real-life social networks. …

We survey the literature on social networks by putting together the economics, sociological and physics … network formation. While the physics/applied mathematics approach is capable of reproducing most observed networks, it does … not explain why they emerge. On the contrary, the economics approach is very precise in explaining why networks emerge but …

information thay they possessed - in determining the shapes of two-way flow Strict Nash networks when small amount of decay is …). Results of this extension shows that the effects of value heterogeneity on Strict Nash networks, when small decay is present … surprising finding is that value heterogeneity can extend the diameters of Strict Nash networks without changing any other …

This paper brings together analyses of two-way flow Strict Nash networks under exclusive player heterogeneity … two assumptions influence important properties of Strict Nash networks. Built upon the findings of Billand et al (2011 … the shapes of Strict Nash networks. …

We study the structure of pairwise stable networks from a very general point. Rather than assuming a particular … empty or complete network are always pairwise stable, stable symmetric networks exist, or stable networks with a connected … networks: they are nested split graphs (NSG). We illustrate these results with many examples from the literature, including …

We survey the literature on the economic consequences of the structure of social networks. We develop a taxonomy of … "macro" and "micro" characteristics of social interaction networks and discuss both the theoretical and empirical findings … discuss the challenges of accounting for the endogeneity of networks in assessing the relationship between the patterns of …

number of his links. This assumption results in the fact that a large set of Nash networks are disconnected and consist of … components of different sizes, a feature that resembles that of real-world networks. Discussions on this insight are provided. …