嘉    宾:  周俊杰 教授，清华大学

主持人:  陆卓然  副教授, 上海交通大学安泰经济与管理学院

时    间:  2026年 10月14日（周三） 下午14:00-15:30

地    点:  上海交通大学徐汇校区安泰经济与管理学院A503

内容简介：We study equilibrium behavior and the propagation of local shocks in networked competition. We introduce competitive centrality, a nonlinear centrality measure that is uniquely determined by network primitives and provides a sufficient statistic for equilibrium behavior. It determines players’ effort allocations and winning probabilities in each bilateral competition. We then use competitive centrality to derive exact expressions for equilibrium responses to local shocks and characterize their signs. Local shocks propagate along network paths according to players’ relative competitive positions. Although these responses can be non-monotone, a simple sign rule determines whether a shock raises or lowers competitive centrality and effort along a propagation path. Together, these results show how network structure and relative competitive positions shape equilibrium responses to local shocks. Interventions that appear to reduce competition—including removing players or links and imposing effort caps—can therefore have unintended consequences elsewhere in the network.

演讲人简介：周俊杰现任清华大学经济管理学院教授，主要研究社会经济网络与产业组织理论。其研究成果发表于 AER、Review of Economic Studies、JET、AEJ: Micro、EJ、RAND、OR 等国际顶级期刊，并现任 JET、RAND 副主编。