👦 About Me

Hi! I am Zhang Xu (徐张), a PhD student in Economics at Renmin University of China.

My research interests include the economics of algorithms, information design, and mechanism design.

📮 xuzhang (at) ruc.edu.cn
📝 Curriculum Vitae

📑 Publications

No publications yet 😭

Privacy-Constrained Signals [arXiv]
with Wei Zhao, 2025

We characterize the set of feasible signal structures under general privacy constraints.

Privacy Structure and the Blackwell Frontier [arXiv]
with Wei Zhao, 2025

The Blackwell frontier induced by graph-based privacy structures (including differential privacy) can be characterized by semi-chains.

On the Mechanism Underlying Algorithmic Collusion [arXiv]
with Wei Zhao, 2024

Algorithmic collusion arises from forced convergence, while a lower discount factor slows down the convergence process.

Artificial Intelligence, Data, and Competition [arXiv]
with Mingsheng Zhang and Wei Zhao, 2024
(Latest version: 2025)

AIs can collude through market allocation, with different allocation patterns emerging under different market segmentations.

2025: 36th Stony Brook International Conference on Game Theory; NUS Theory Lunch
2024: 7th World Congress of the Game Theory Society (Beijing); PKU–NUS Annual International Conference on Quantitative Finance and Economics (Suzhou)

2022: Honored Graduate, Renmin University of China
2020: National First Prize, China Undergraduate Mathematical Contest in Modeling

2022.09 – Present: PhD student in Economics, Renmin University of China
2018.09 – 2022.06: B.S. in Mathematics and Economics, Renmin University of China

Last updated: December 2025 · Website forked from RayeRen