Activities:

• Invited Talk, "2025 Dalian International Conference on Mathematics", at Dalian University of Technology. Dalian, China. September 21-26,  2025.

• Invited Talk, ''Workshop on Collective Dynamics of Interacting Particle Systems'', at Jilin University. Changchun, China. August 3-8, 2025.

• Poster Report--Summer School on Mathematical Neuroscience at Westlake, at Westlake University. Hangzhou, China. August 25th to August 29th, 2025. 

• Invited Talk, ''Symposium on Collective Behavior in Nature and Science'', at Harbin Institute of Technology. Harbin, China. July 30-August 3, 2025.

• Invited Talk, ''The Kinetic and Fluid Theory for the Collective Behaviors'', at Donghua University. Shanghai, China. July 1-5, 2025.

• Invited Talk, "HIT-SNU collective dynamics day", at Seoul National University. Seoul, Korea (Republic of).  December 31, 2024.

• Invited Talk, "Recent Advances in the Mathematical Analysis of Particle Interactions and Nonlocal PDEs” at the KSIAM 2024 Annual Meeting, at BEXCO in Busan, Korea (Republic of). December 5-8, 2024.

• Invited Talk, "2024 Dalian International Conference on Mathematics", at Dalian University of Technology. Dalian, China. September 24-28, 2024.

• Summer School - "International summer school on Mathematical Biology", at INS, August 26-30, 2024.

• Research School - Jean Morlet Chair - "Frontiers in Interacting Particle Systems, Aggregation-Diffusion Equations & Collective Behavior ", at the Centre International de Rencontres Mathématiques, Marseille, France. June 24-28, 2024

• Invited Talk, ''Collective Dynamics Days", at Seoul National University. Seoul, Korea (Republic of). January 10&12, 2024.

   Papers:

• Fanqin Zeng, Xiaoping Xue and Yuchen Zhu. Critical exponent for Cucker-Smale model under group-hierarchical multi-leadership. Applied Mathematics Letters, 2023, 136: 108452.
• Fanqin Zeng, Gao Yu and Xiaoping Xue. Global weak solutions to the generalized mCH equation via characteristics. Discrete and Continuous Dynamical Systems-Series B, 2022, 27: 4317--4329.
• Shuanglin Jing, Ling Xue, Xuezhi Li, Fanqin Zeng and Junyuan Yang. Age-structured modeling of COVID-19 dynamics: the role of treatment and vaccination in controlling the pandemic. Journal of Mathematical Biology, 2025, 90(1): 1--49.
• Seung-Yeal Ha, Seungjun Lee, and Fanqin Zeng*. On the stochastic flocking dynamics of the random discrete thermodynamic Cucker-Smale model. IEEE Transactions on Network Science and Engineering, 2026, 13: 2329--2349.
• Seung-Yeal Ha, Jaemoon Lee, Qinghua Xiao and Fanqin Zeng. A priori estimates on the weak flocking of the Cucker-Smale-Fokker-Planck equation. Applied Mathematics Letters, 2026,176: 109861.
• Jiu-Gang Dong, Seung-Yeal Ha, Seungjun Lee, Qinghua Xiao and Fanqin Zeng*. On the stochastic consensus of a random discrete first-order consensus model. Submitted.
• Jiu-Gang Dong, Seung-Yeal Ha, Seungjun Lee, Qinghua Xiao and Fanqin Zeng. Stochastic consensus of a first-order consensus model with randomly switching network topologies. Submitted.
• Seung-Yeal Ha, Jaemoon Lee and Fanqin Zeng*. Formation of stochastic nematic alignment for discrete-time Justh-Krishnaprasad model. Submitted.
• Seung-Yeal Ha, Xinyu Wang and Fanqin Zeng*. Finite-time flocking of an infinite set of  Cucker-Smale particles with sublinear velocity couplings. Submitted.
• Seung-Yeal Ha, Jaemoon Lee and Fanqin Zeng. Dynamics of Fractional-Inertia Kuramoto model. In preparation.