collaborators

6 papers

math.AP2026

Emergent behaviors of the kinetic Motsch-Tadmor model in a phase-spatially extended setting

Seung-Yeal Ha, Xinyu Wang

The kinetic Motsch-Tadmor (in short, KMT) model is a kinetic flocking model with a normalized communication weight. In this paper, we study the emergent dynamics of the phase-spati…

math.AP2026

Weak flocking for phase-spatially extended kinetic Cucker-Smale equation in a confining force field

Seung-Yeal Ha, Xinyu Wang

We study the quantitative fast and slow weak flocking of the phase-spatially extended kinetic Cucker-Smale model in confining potential fields. The confining potential is allowed t…

math.AP2026

Weak stability and random mean-field limit of the phase-spatially extended kinetic Cucker-Smale model

Seung-Yeal Ha, Xinyu Wang

We study the weak stability of the kinetic Cucker-Smale (in short, KCS) model in a phase-spatially extended setting, which can be formally derived from the infinite Cucker-Smale mo…

math.DS2026

Finite-time flocking of an infinite set of Cucker-Smale particles with sublinear velocity couplings

Seung-Yeal Ha, Xinyu Wang, Fanqin Zeng

We study finite-time flocking for an infinite set of Cucker-Smale particles with sublinear velocity coupling under fixed and switching sender networks. For this, we use a component…

math.DS2025

Emergent behaviors of the singular continuum Kuramoto model and its graph limit

Li Chen, Seung-Yeal Ha, Xinyu Wang +1

We study the emergent dynamics of the singular continuum Kuramoto model (in short, SCKM) and its graph limit. The SCKM takes the form of an integro-differential equation exhibiting…

math.AP2025

Emergent dynamics of spatially extended relativistic kinetic Cucker-Smale model

Seung-Yeal Ha, Xinyu Wang

We study the emergent dynamics of the relativistic kinetic Cucker-Smale (RKCS) model without assuming compactness in spatial and velocity support. In this setting, the lower bound…