Some people might not familiar enough with the structured matrices field. They even have never ever heard anything about Georg Heinig. Georg Heinig was one of the structured matrices experts.

 Somehow, In May 20th 2005, Georg Heinig was found dead in his apartment in Kuwait. He was died because of the heart attack. Georg Heinig has been well known as the active member of the Integral Equations and Operator Theory journal.  

 For some reasons, his colleagues have decided to make some sorts of tribute to him. In their writings on the Georg Heinig in Memoriam journals, they said that Georg Heinig is one of the greatest experts in this field that certain have given some great contributions.