International audienceToward a modelling of intra-urban dynamics. — Modelling of intra-urban spatial dynamics has recently witnessed some important innovative impulses from catastrophe theory as well as from theories on dissipative structures. These models resonate with traditional urban theory and add a new dynamic element which considers the evolution of spatial structures not just as taken-for-granted fact, but rather as the product of complex interactions. A series of theoretical experiments, coupled with simulations based on observations from urban history is now under way, aiming to unravel connections between the mathematical form of urban interactions and the qualitative form of urban configurations.La modélisation spatiale et dynam...