报告人简介：
Gi-Sang Cheon是韩国名校成均馆大学数学系教授，他在组合数学特别是组合矩阵论方向做出过很多重要的工作，是该领域国际上领头的专家之一。

报告内容简介：
The Riordan group and Riordan matrices are very useful for studying problems arising in enumerative combinatorics and related matrix theory. In this talk, the concept of Riordan group is introduced and some related topics are presented.

主持人：詹兴致 教授