Polarization of Multi-agent Gradient Flows Over Manifolds With Application to Opinion Dynamics

Abstract

Multi-agent systems are known to exhibit stable emergent behaviors, including polarization, over R n or highly symmetric nonlinear spaces. In this article, we eschew linearity and symmetry of the underlying spaces, and study the stability of polarized equilibria of multi-agent gradient flows evolving on general hypermanifolds. The agents attract or repel each other according to the partition of the communication graph that is connected but otherwise arbitrary. The manifolds are outfitted with geometric features styled "dimples" and "pimples" that characterize the absence of flatness. The signs of inter-agent couplings together with these geometric features give rise to stable polarization under various sufficient conditions. We propose tangible interpretation of the system in the context of opinion dynamics, and highlight throughout the text its versatility in modeling diverse aspects of the polarization phenomenon.

Conformists and contrarians on spheres

“…It has been noted that conformists-contrarians interactions may serve as a paradigmatic toy model for opinion dynamics and social polarization, see for instance [22,23]. On the other hand, it has been argued that spherical topology is an appropriate choice for modeling opinion formation, see [24][25][26].…”