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- W4298185117 abstract "The Schelling model, introduced by Schelling in 1969 as a model for residential segregation in cities, describes how populations of multiple types self-organize to form homogeneous clusters of one type. In this model, vertices in an $N$-dimensional lattice are initially assigned types randomly. As time evolves, the type at a vertex $v$ has a tendency to be replaced with the most common type within distance $w$ of $v$. We present the first mathematical description of the dynamical scaling limit of this model as $w$ tends to infinity and the lattice is correspondingly rescaled. We do this by deriving an integro-differential equation for the limiting Schelling dynamics and proving almost sure existence and uniqueness of the solutions when the initial conditions are described by white noise. The evolving fields are in some sense very rough but we are able to make rigorous sense of the evolution. In a key lemma, we show that for certain Gaussian fields $h$, the supremum of the occupation density of $h-phi$ at zero (taken over all $1$-Lipschitz functions $phi$) is almost surely finite, thereby extending a result of Bass and Burdzy. In the one dimensional case, we also describe the scaling limit of the limiting clusters obtained at time infinity, thereby resolving a conjecture of Brandt, Immorlica, Kamath, and Kleinberg." @default.
- W4298185117 created "2022-10-01" @default.
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- W4298185117 date "2018-02-09" @default.
- W4298185117 modified "2023-09-27" @default.
- W4298185117 title "Scaling limits of the Schelling model" @default.
- W4298185117 doi "https://doi.org/10.48550/arxiv.1802.03346" @default.
- W4298185117 hasPublicationYear "2018" @default.
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