时间：2026年5月20日（周三）14:00-16:00
地点：E14-116
主讲人：汪湜 上海科技大学
讲座主题：An introduction to the path signature theory
讲座摘要: The signature map sends a BV curve in R^n to a formal series in its tensor algebra, by using the iterated integral method. I will first briefly survey the theory of signature map developed by K.T. Chen, and then introduce the general signature inversion problem. Finally, I will discuss recent joint work with Chong Liu on how to use rational approximation to explicitly recover an axial increasing curve from its signature.
