Heiner Zieschang

Heiner Zieschang (12 November 1936 in Kiel – 5 April 2004 in Bochum) was a German mathematician. He was a professor at Ruhr University in Bochum from 1968 till 2002. He was a topologist. In 1996 he was an honorary doctor of University of Toulouse and in 1997 he was an honorary professor of Moscow State University. Provided by Wikipedia