Abstract
In this paper a highly simplified spatial search process in a linear space with a central business district and a residential periphery is examined. Measures of spatial relative concentration and polarization are introduced. These measures play a fundamental role in the analysis of a spatial search equilibrium, the main characteristics of the equilibrium being determined by them, and the realization of such an equilibrium being impossible without a minimal level of polarization. The resulting spatial interaction model clearly illustrates the main features of spatial interaction models derived from a spatial sequential search process: the interaction effect is an intervening-opportunities effect, and the attraction effects include a competing-searchers effect.
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