Geoffrey Recktenwald

Visiting Assistant Professor of Mathematics

Web Site N/A Contact Information Office:  227 Malott Hall Phone:  (607) 254-5058 Fax:  (607) 255-7149 Email:  recktenwald@math.cornell.edu Courses & Office Hours

Education

Ph.D. (2006) Cornell University

Research Area: Dynamics, vibrations, perturbation theory, and bio-mechanics

I am currently working on the stability of coupled strongly non-linear oscillators. My focus is on developing various perturbation methods and exact techniques to analyze transitions between regions of stability.

I am also interested in the kinematics of hummingbird jaw snap. Using high speed footage, humming birds have been seen 'snapping' their beak shut as they catch an insect. This 'snapping' action is not well understood since the muscles in the beak cannot account for the speed of the snap.

Selected Publications

Coexistence phenomenon in autoparametric excitation of two degree of freedom systems (with Richard Rand), International J. Nonlinear Mechanics 40 (2005), 1160–1170.

Stability of strongly nonlinear normal modes (with Richard Rand), Communications in Nonlinear Science and Numerical Simulations, CNSNS-D-05-00025.

Last modified: October 31, 2006