All current urban models accept the ‘first-order recursion’ view, namely, that the state of an urban system at time <i>t</i> is sufficient for predicting its state at <i>t+1</i>. This assumption is not at all evident in the case of urban development, where the behavior of developers and planners is...

This paper deals with the influence of the organization of an agent’s ethnic identities on ethnic residential patterns by extending the Schelling model to include a further hierarchical level; that is, the agents’ ethnic identities are organized in a two-level hierarchy (each agent belongs...