urbanization of poverty appears to be the result of better access to public transportation in central cities, and central city …

ties) than in sparsely populated areas. We also demonstrate that, for a low urbanization level, there is a unique steady …-state equilibrium where workers do not interact with weak ties, while, for a high level of urbanization, there is a unique steady … when social interactions are optimal, we show that there is over-urbanization in equilibrium. …