报告人简介：李信明(Lee Sin-Min)美国圣荷西州立大学退休教授，从事图论代数与数论研究, 迄今已发表论文200多篇。 著有1-8册的《数学和数学家的故事》（香港?角?出版社，中国新?书局，上海科学技术出版社）、《中国数学五千年》(台湾书局)、《数学家?奇》,《李学数讲数学故事》（九章出版社）、散文《梦裹寻她千百度》,《追虹逐梦的年代》（香港天地图书）
报告内容简介：Prof. A. Grothendieck passed away on Nov. 13, 2014. He was a genius in this century, a grand master in Functional analysis and algebraic geometry. However, in his last 20 years he lived as a hermit in Ariege --a small village isolated from his family, friends and mathematical community. Grothendieck was my mentor who arranged me to study mathematics in France. I will give some recollections of the years 1970-1979 when I lived and studied in France and my interactions
with him. I will also address why he abandoned mathematics in the talk. The talk is based on my ongoing book about Grothendieck’s life and work.