报告人：Prof. Robert Conte (ENS Cachan, France & U. of Hong Kong)

时间：2018年10月18日（星期四）16:00 -- 17:00

地点：理科楼数学系A-404

联系人：林润亮

摘要：What is the probability (called persistence) that a real stochastic variable has not changed its initial sign up to time $t$?

Answer: this is the same tau-function (Chazy, 1911) of a codimension-three sixth Painleve' equation than the one of the mean curvature of Bonnet surfaces (Bonnet, 1867).