Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
Dynamics of retail firms in marketplaces are analyzed, assuming that firms compete under monopolistic competition within a marketplace as well as between marketplaces and consumers are uniformly distributed over space. The number, size, and location of marketplaces or edge cities are analytically obtained. Furthermore, extending the model to a two-dimensional space, Christaller-Lösch system of hexagonal market areas is analytically derived.