Eduard Zehnder

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

Zehnder studied 1960-1965 mathematics and physics at the ETH Zurich, where he was a Ph.D. in 1971 in theoretical physics at Res Jost. 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 at Princeton. In 1974 he was a lecturer in mathematics at the University of Erlangen- Nuremberg and from 1976 to 1986 professor at the Ruhr- University Bochum. 1987/88 he was at the RWTH Aachen Head of the Institute of Mathematics and in 1988 professor at the ETH, where he retired in 2006.

In 1983 he proved with Charles Conley Arnold 's conjecture for tori of arbitrary dimension.

His doctoral counts Andreas Floer (1984). In 1986 he was invited speaker at the ICM in Berkeley (The Arnold conjecture for fixed points of symplectic mappings and periodic solutions of Hamiltonian systems). Zehnder is a member of the Leopoldina and Fellow of the American Mathematical Society since 1999.

Writings

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