Iso-Spectral Problem is one of the most interesting topic in modern mathematics. Especially, there are some intrinsic relationship on many computational mathematics subjects, such as Grid Generation, PDE eigen-problem, matrix computation, mixed symbolic and numerical computation. In this talk, we investigate Iso Spectral Problem in terms of block matrix form, including square matrix as well as rectangular matrix case.

Prof. Jia-Chang Sun graduated from CUST in 1964 and visited abroad for 4 years, including Department of Mathematics of UCSB and NA Group of Yale in 1980-1982, Minnesota Supercomputer Institute and Department of Mathematics of UCLA in 1988-1989, Mathematical Department of CUHK in 1993, Computer Science Department of Colorado in 1997 and 2004, etc. He has joined in many major projects in China, such as 863 and 973 for 20 years.