Continuous Social Networks

Fuente: arXiv
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Hauptverfasser: Chitiva, Julián, Venel, Xavier
Format: Preprint
Veröffentlicht: 2024
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author Chitiva, Julián
Venel, Xavier
author_facet Chitiva, Julián
Venel, Xavier
contents We develop an extension of the classical model of DeGroot (1974) to a continuum of agents when they interact among them according to a DiKernel. We show that, under some regularity assumptions, the continuous model is the limit case of the discrete one. Additionally, we establish sufficient conditions for the emergence of consensus. We provide some applications of these results. First, we establish a canonical way to reduce the dimensionality of matrices by comparing matrices of different dimensions in the space of DiKernels. Then, we develop a model of Lobby Competition where two lobbies compete to bias the opinion of a continuum of agents. We give sufficient conditions for the existence of a Nash Equilibrium and study their relation with the equilibria of discretizations of the game. Finally, we characterize the equilibrium for a particular case of DiKernels.
format Preprint
id arxiv_https___arxiv_org_abs_2407_11710
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle Continuous Social Networks
Chitiva, Julián
Venel, Xavier
Theoretical Economics
Computer Science and Game Theory
We develop an extension of the classical model of DeGroot (1974) to a continuum of agents when they interact among them according to a DiKernel. We show that, under some regularity assumptions, the continuous model is the limit case of the discrete one. Additionally, we establish sufficient conditions for the emergence of consensus. We provide some applications of these results. First, we establish a canonical way to reduce the dimensionality of matrices by comparing matrices of different dimensions in the space of DiKernels. Then, we develop a model of Lobby Competition where two lobbies compete to bias the opinion of a continuum of agents. We give sufficient conditions for the existence of a Nash Equilibrium and study their relation with the equilibria of discretizations of the game. Finally, we characterize the equilibrium for a particular case of DiKernels.
title Continuous Social Networks
topic Theoretical Economics
Computer Science and Game Theory
url https://arxiv.org/abs/2407.11710