This paper studies whether agents must agglomerate at a single location in a class of models of two-sided interaction. In these models there is an increasing returns effect that favors agglomeration, but also a crowding or market-impact effect that makes agents prefer to be in a market with...

This paper delves into geographical agglomeration patterns of economic activities focusing on the connection between these agglomeration tendencies and sectoral patterns of innovative activities. Within a broad evolutionary perspective, we refine upon incumbent statistical models, trying to...