PREFACE

摘要

This special issue of Acta Mathematica Scientia is dedicated to the memory of ProfessorJia-Rong Yu on the occasion of his hundredth anniversary.Professor Jia-Rong Yu, born November 16, 1920, passed away on October 14, 2020, at theage of one hundred. He is known as the founder of the Sino-French Mathematical Center inWuhan University, and was the director of this center from 1980 to 1994. In 1991, thanks to hiscolossal investment in Franco-Chinese cooperation, he was made officer in the order of academicpalms by the French Government.