数学大师讲坛 第二讲
报告题目 (Title)：Two applications of eta-invariant
中文标题: Eta不变量的两个应用
报告人 (Speaker)：张伟平院士（陈省身数学研究所）
报告时间 (Time)：2023年4月21日(周五) 10:00-11:00
报告地点 (Place)：上海大学宝山校区E408
邀请人(Inviter)：席东盟、李晋、张德凯
报告摘要：The eta-invariant introduced by Atiyah-Patodi-Singer has played important roles in geometry, topology, number theory and mathematical physics. In this talk, we describe two simple applications. One on Rokhlin congruences (dating back to 1994). The other joint with Zizhou Tang, solving a problem of Berard-Bergery and Besse dating back to 1970s.