摘要
We are delighted to present this special issue of the Communications in Mathematical Research in honor of Professor Chao-Jiang Xu on the occasion of his 65th birthday.Professor Chao-Jiang Xu's academic career in mathematics started at Wuhan University in China,where he received his B.Sc.degree in mathematics in 1981.And in 1986 he received his Ph.D.degree at UniversitéParis-Sud under the supervision of Professor Jean-Michel Bony.