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Nonlinear Graphon mean-field systems

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arxiv 2402.08628 v4 pith:ZDLPOFAL submitted 2024-02-13 math.PR

Nonlinear Graphon mean-field systems

classification math.PR
keywords particlesdescribedgraphgraphoninfinitylimitnonlinearnumber
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We address a system of weakly interacting particles where the heterogenous connections among the particles are described by a graph sequence and the number of particles grows to infinity. Our results extend the existing law of large numbers and propagation of chaos results to the case where the interaction between one particle and its neighbors is expressed as a nonlinear function of the local empirical measure. In the limit of the number of particles which tends to infinity, if the graph sequence converges to a graphon, then we show that the limit system is described by an infinite collection of processes and can be seen as a process in a suitable $L^2$ space constructed via a Fubini extension. The proof is built on decoupling techniques and careful estimates of the Wasserstein distance.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Linear-Quadratic Mean Field Games with Hybrid Local-Global Interactions on Manifolds

    math.OC 2026-07 conditional novelty 6.0

    LQ mean-field games on hybrid manifold graphs admit FBPDE Nash limits with high-probability tracking error O((log N)^{-1/2}) sparse and O(N^{-γ(p,s)}) dense.

  2. Contracting a crowd of heterogeneous agents

    econ.TH 2025-07 unverdicted novelty 6.0

    In a linear-quadratic model with network spillovers, the continuum-limit contract approximates the finite-N optimum with error of order 1/N and remains stable to perturbations of the interaction function.