The paper discusses the important role of clustering in the evolution of social networks, as it affects not only the incentives of players to cooperate but also their ability to search for fresh opportunities. Depending on the volatility of the environment and the social convention in place, we...

We consider the emergence of power-law tails in the returns distribution of limit-order driven markets. We explain a previously observed clash between the theoretical and numerical studies of such models. We introduce a solvable model that interpolates between the previous studies and agrees...