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In this work, we discuss kinetic descriptions of flocking models, of the so-called Cucker-Smale and Motsch-Tadmor types. These models are given by Vlasov-type equations where the interactions taken into account are only given long-range…

数值分析 · 数学 2014-10-29 Thomas Rey , Changhui Tan

We study the Cucker--Smale (C-S) flocking systems involving both singularity and noise. We first show the local strong well-posedness for the stochastic singular C-S systems before the first collision time, which is a well defined stopping…

动力系统 · 数学 2021-09-21 Qiao Huang , Xiongtao Zhang

Lyapunov-Krasowskii functionals are used to design quantized control laws for nonlinear continuous-time systems in the presence of constant delays in the input. The quantized control law is implemented via hysteresis to prevent chattering.…

最优化与控制 · 数学 2012-04-10 C. De Persis , F. Mazenc

We introduce a Vicsek-like flocking model with a minimal form of time-delayed orientational interactions, in which the delays occur on a time scale that is well-separated from other time scales in the model. We achieve this by implementing…

软凝聚态物质 · 物理学 2025-05-19 Charles R. Packard , Daniel M. Sussman

A Collision-Avoiding flocking particle system proposed in [8] is studied in this paper. The global wellposedness of its corresponding Vlasov-type kinetic equation is proved. As a corollary of the global stability result, the mean field…

数学物理 · 物理学 2013-11-15 Rong Yang , Li Chen

In particle systems, flocking refers to the phenomenon where particles' individual velocities eventually align. The Cucker-Smale model is a well-known mathematical framework that describes this behavior. Many continuous descriptions of the…

偏微分方程分析 · 数学 2024-07-29 Sebastian Zimper , Federico Cornalba , Nataša Djurdjevac Conrad , Ana Djurdjevac

We present pathwise flocking dynamics and local sensitivity analysis for the Cucker-Smale(C-S) model with random communications and initial data. For the deterministic communications, it is well known that the C-S model can model emergent…

动力系统 · 数学 2017-12-13 Seung-Yeal Ha , Shi Jin

We study the emergent behaviors of the weak solutions to the kinetic Cucker-Smale (in short, KCS) model in a non-compact spatial-velocity support setting. Unlike the compact support situation, non-compact support of a weak solution can…

偏微分方程分析 · 数学 2026-04-21 Seung-Yeal Ha , Xinyu Wang

We discuss the Cucker-Smale's (C-S) particle model for flocking, deriving precise conditions for flocking to occur when pairwise interactions are sufficiently strong long range. We then derive a Vlasov-type kinetic model for the C-S…

偏微分方程分析 · 数学 2008-06-16 Seung-Yeal Ha , Eitan Tadmor

We present collective dynamics of the Cucker-Smale (C-S) ensemble under random communications. As an effective modeling of the C-S ensemble, we introduce a stochastic kinetic C-S equation with a multiplicative white noise. For the proposed…

偏微分方程分析 · 数学 2019-09-04 Seung-Yeal Ha , Jinwook Jung , Michael Röckner

We analyze the one dimensional Cucker-Smale (in short CS) model with a weak singular communication weight $\psi(x) = |x|^{-\beta}$ with $\beta \in (0,1)$. We first establish a global-in-time existence of measure-valued solutions to the…

偏微分方程分析 · 数学 2020-06-16 Young-Pil Choi , Xiongtao Zhang

We study a new flocking model which has the versatility to capture the physically realistic qualitative behavior of the Motsch-Tadmor model, while also retaining the entropy law, which lends to a similar 1D global well-posedness analysis to…

偏微分方程分析 · 数学 2024-06-14 Roman Shvydkoy , Trevor Teolis

In this paper, we deal with first and second-order alignment models with non-universal interaction, time delay and possible lack of connection between the agents. More precisely, we analyze the situation in which the system's agents do not…

最优化与控制 · 数学 2025-08-26 Chiara Cicolani , Elisa Continelli , Cristina Pignotti

New methods are developed for the stabilization of a linear system with general time-varying distributed delays existing at the system's states, inputs and outputs. In contrast to most existing literature where the function of time-varying…

系统与控制 · 电气工程与系统科学 2024-12-20 Qian Feng , Sing Kiong Nguang , Wilfrid Perruquetti

In this letter we introduce a class of delayed kinetic systems derived from mass action type reaction network models. We define the time delayed positive stoichiometric compatibility classes and the notion of complex balanced time delayed…

动力系统 · 数学 2017-04-21 György Lipták , Katalin M. Hangos , Mihály Pituk , Gábor Szederkényi

In this paper, we propose a coupled system describing the interaction between the Relativistic Cucker-Smale model and the incompressible Navier-Stokes equations via a drag force, and establish a global existence theory as well as the…

偏微分方程分析 · 数学 2025-03-18 Shenglun Yan , Weiyuan Zou

Consider a flock of birds that fly interacting between them. The interactions are modelled through a hierarchical system in which each bird, at each time step, adjusts its own velocity according to his past velocity and a weighted mean of…

概率论 · 数学 2009-12-24 Federico Dalmao , Ernesto Mordecki

We provide a bird's eye view on developments in analyzing the long time, large crowd behavior of Cucker-Smale alignment dynamics. We consider a class of (fully-)discrete models, paying particular attention to general alignment protocols in…

动力系统 · 数学 2023-06-06 Eitan Tadmor

Collision avoidance is an interesting feature of the Cucker-Smale (CS) model of flocking that has been studied in many works, e.g. [1, 2, 4, 6, 7, 20, 21, 22]. In particular, in the case of singular interactions between agents, as is the…

经典分析与常微分方程 · 数学 2018-07-03 Ioannis Markou

This paper focuses on the dynamical properties of delayed complex balanced systems. We first study the relationship between the stoichiometric compatibility classes of delayed and non-delayed systems. Using this relation we give another way…

动力系统 · 数学 2024-03-14 Xiaoyu Zhang , Tian Zhang , Chuanhou Gao