We address the fundamental question arising in economic geography: why do economic activities agglomerate in a small number of places? The main reasons for the formation of economic clusters involving firms and/or households are analysed: (i) externalities under perfect competition; (ii)...

The study of the geographical distribution of firms and of the dynamic pattern of firm entry and firm exits is a particularly relevant issue in regional health economics especially in the view of policy intervention to geographically balance health service supply and demand. The current state of...

Canonical analysis of the classical general equilibrium model demonstrates the existence of an open and dense subset of standard economies that possess fully-revealing rational expectations equilibria. This paper shows that the analogous result is not true in urban economies under appropriate...

This paper explores the formation of cities through labour specialization, gains to trade, a fixed cost for the transportation network, imperfect competition between firms, and the commuting costs of consumers. The model uses a very general setting, allowing a multidimensional location space and...

The aim of this paper is to explore the structure of cities as a function of labor differentiation, gains to trade, a fixed cost for constructing the transportation network, a variable cost of commodity transport, and the commuting costs of consumers. Firms use different types of labor to...

Cities are often viewed as places fostering employment. It is shown that the choice of a particular location within a city is a key factor for the creation of jobs by a new firm. This question is addressed in the context of a standard urban model in which existing firms are established at the...

La concentrazione spaziale delle attività economiche, a causa delle implicazioni che può avere per la crescita economica locale e le disparità territoriali, è un fenomeno di grande interesse per l’economia e le scienze regionali. È stato tuttavia riconosciuto che un ostacolo rilevante...

Utilizzando una recente versione della shift-share con struttura spaziale, in questo contributo scomponiamo il cambiamento della dimensione media delle imprese nelle province italiane rispetto a componenti di natura sia spaziale (di regione e di vicinato) che settoriale. L’analisi, condotta...

Paul Krugman has clarified the microeconomic underpinnings of both spatial economic agglomerations and regional imbalances at national and international levels. He has achieved this with a series of remarkably original papers and books that succeed in combining imperfect competition, increasing...