He completed his Ph. D. in 1970 under the supervision of Marcel Guenin at the University of Geneva .
Eckmann is the son of mathematician Beno Eckmann .
Eckmann completed Eckmann 's Ph. D. in 1970 under the supervision of Marcel Guenin at the University of Geneva .
Eckmann is the son of mathematician Beno Eckmann .