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 …

-like structures in real-life social networks. -- network formation ; stars ; heterogeneity ; laboratory experiments …

We study the impact of research collaborations in coauthorship networks on research output and how optimal funding can …-designed to take advantage of the spillover effects generated in scientific knowledge production networks. …

minority agents are in the social network, the more they assimilate to the majority culture. We also show that denser networks …

We study some recent developments and challenges in the empirics of the effects of social networks. We focus in …

the model suggests that interethnic exposure reduces the share of own-ethnicity friends (homophily) and has a non …