Eduard Zehnder

Eduard Zehnder at the “Dynamical Systems” workshop in Oberwolfach , 2005

Eduard Zehnder (born November 10, 1940 in Leuggern , Switzerland ) is a Swiss mathematician who is a leading scientist in symplectic geometry .

Zehnder studied mathematics and physics at the ETH Zurich from 1960 to 1965 , where he received his doctorate in theoretical physics from Res Jost in 1971 . He then spent a year at the invitation of Jürgen Moser at the Courant Institute of Mathematical Sciences of New York University and from 1972 to 1974 at the Institute for Advanced Study in Princeton . In 1974 he became a lecturer in mathematics at the University of Erlangen-Nuremberg and from 1976 to 1986 professor at the Ruhr University in Bochum . In 1987/88 he was head of the Institute for Mathematics at RWTH Aachen University and from 1988 professor at ETH, where he retired in 2006.

In 1983 he and Charles Conley proved the Arnold conjecture for tori of any dimension.

Andreas Floer (1984) is one of his doctoral students . In 1986 he was invited speaker at the International Congress of Mathematicians (ICM) in Berkeley (The Arnold conjecture for fixed points of symplectic mappings and periodic solutions of Hamiltonian systems). Zehnder has been a member of the Leopoldina and a fellow of the American Mathematical Society since 1999 .

Fonts

with Helmut Hofer : Symplectic Invariants and Hamiltonian Dynamics. Birkhäuser 1998.
with Clifford Taubes , Alan Weinstein (Eds.): Floer Memorial Volume. Birkhäuser 1995.
with Jürgen Moser : Notes on Dynamical Systems. Courant Lecture Notes, AMS 2005.