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540 Rhodes
Cornell University
Ithaca, NY 14853

Phone: 607-255-4336

John Guckenheimer

Professor, Mathematics and T&AM

B.A. 1966 (Harvard)

Ph.D. 1970 (California at Berkeley)

Professional Biography

Guckenheimer came to Cornell in 1985 from the University of California at Santa Cruz, where he had been a member of the faculty since 1973. He has had fellowships or visiting appointments at Instituto Matemática Pura e Aplicada in Rio de Janeiro (1969), University of Warwick (1969-70), Institute for Advanced Study (1970-72, 1988-89), Courant Institute for Mathematical Sciences (1978), Institut des Hautes Études Scientifiques (1979), Mathematical Sciences Research Institute (1983-84), and Institut Mittag-Leffler (1984). He was a Guggenheim fellow in 1984, and was elected president of the Society for Industrial and Applied Mathematics in 1996.

Research Interests

The focus of my studies is dynamical systems. Dynamical systems theory describes general phenomena that occur over long times in deterministic systems. Much of my theoretical work involves study of the iterations of a single, real-valued function and the influence of symmetry on generic features of dynamical systems. Recent research focuses upon methods for computing aspects of dynamical behavior. The computational emphasis has been on computing bifurcations in systems that depend upon parameters and upon producing computer-generated proofs for qualitative properties of phase portraits. I have also studied the application of dynamical systems theory to many fields of science and engineering. I have worked with applications in biology, chemistry, engineering, and physics. Current work focuses on applications to the neurosciences to problems of control. I am collaborating with Ronald Harris-Warrick (Section of Neurobiology and Behavior) in studies of pattern generation in a small neural network, the stomatogastric ganglion of crustacea.

Selected Publications

  • Guckenheimer, J. 1979. Sensitive dependence to initial conditions for one dimensional maps. Communications in Mathematical Physics 70:133-60.
  • Guckenheimer, J., and P. Holmes. 1983. Nonlinear oscillations, dynamical systems and bifurcations of vector fields. New York: Springer-Verlag.
  • Armbruster, D., J. Guckenheimer, and P. Holmes. 1988. Heteroclinic cycles and modulated travelling waves in systems with 0(2) symmetry. Physica D 24:257-82.
  • Guckenheimer, J., and S. Johnson. 1990. Distortion of S-unimodal maps. Annals of Mathematics 132:71-130.
  • Guckenheimer, J., S. Gueron and R. Harris-Warrick. 1993. The dynamics of a conditionally bursting neuron. Philosophical Transactions of the Royal Society of London B 341:345-59.