This paper extends Hotelling's model of price competition with quadratic transportation costs from a line to graphs. I propose an algorithm to calculate firm-level demand for any given graph, conditional on prices and firm locations. One feature of graph models of price competition is that...

The paper studies indirect network effects in a market composed by two incompatible intermediaries that choose price (short-term issue) in addition to location (long-term issue). The paper first shows that (i) when the network externality is sufficiently weak, only maximum differentiation...

This paper studies urban sustainability from the perspective of externalities. We develop a general spatial equilibrium model of a monocentric city, in which two types of externalities occur. On the one hand, pollution in the industrial centre leads to a spatially differentiated deterioration of...

Why are regional unemployment differentials in Europe so persistent if, as the wage curve literature demonstrates, there is no compensation in labour markets? We hypothesize that workers in high-unemployment regions are compensated in housing markets. Modelling regional unemployment...

This paper presents a framework for analysing spatial aspects of environmental policies in the regulation of trans-boundary externalities. A spatial price equilibrium model for two regions is constructed, where interactions between these regions can occur via trade and transport, via mutual...

This paper is concerned with the economics of urban externalities. We start by reviewing the literature on urban externalities, and observe that although many interesting contributions have been made, there seems to be sufficient scope and need for further research, both theoretically and...

How should urban containment and the diversion of households to nearby residential areas be evaluated from a welfare economic perspective? Assuming the existence of a negative externality of city size, we develop a concise general equilibrium model for a mother city and a satellite. This...

Conventional wisdom tells us that with no market failure and local non-satiation of preferences, the core is at least as large as the collection of competitive equilibrium allocations.We con.rm this for a standard model featuring land.Next we consider the public land ownership version of the...

Although there is a large and rapidly growing literature on the determinants of regional variation in new firm formation, relatively little is known about the interrelation between the characteristics of start-up firms and urban structure. It is only recently that scholars of urban economics...