报告时间：2021年1月26日（星期二）9:30-10:30

报告地点：腾讯会议 ID：551 556 160 密码：1234 腾讯会议链接https://meeting.tencent.com/s/a3HBgCkvMr3V

报告人: 王瑾(浙江师范大学)

报告摘要：The present talk is mainly devoted to some new nonlinear inverse relations of the ordinary Bell polynomials which can be derived by the classical Lagrange expansion theorem. At first, we present a simple proof but also a new general version for Birmajer–Gil–Weiner’s inverse relations for the Bell polynomials [Electron. J. Combin. 19(4) (2012) #P34]. Second, by use of the Lagrange inversion formula, we show some nonlinear inverse relations which are closely related to Terry Tao’s power series problem [https://terrytao.wordpress.com/2016/10/23/another-problem-about-power-series/]. In the end, based on what obtained, we put forward a general research problem concerning nonlinear inverse relations. Some positive solutions obtained recently are presented. One of the special case turns out be Birmajer–Gil–Weiner’s another result [Discrete Math. 342 (2019) 38-54].

邀请人：马欣荣，毛仁荣