Dartmouth Dartmouth Mathematics Colloquium MATH


Thursday, April 24, 1997

4:00-5:00 pm

102 Bradley Hall


Professor Beth Bradley


Brown University


speaks on

Control and Stabilization of a Spherical Shell



Abstract. In recent years, much work has been done to control and stabilize flexible structures for deployment in space. An example of such a structure which may be modeled as a spherical shell is a satellite dish. We will discuss the issues of control (i.e. the ability to drive the shell from one state to another) and stabilization (i.e. the ability to damp out vibrations exponentially). Techniques used include semigroup theory, Sobolev space theory, multiplier techniques, unique continuation results and much more! This talk is designed to be an introduction to both control theory and nonlinear shells.

Tea. High tea will be served at 3:30 pm in the Lounge.
Emmy's. Certain refreshments will be available at Emmy's after the talk.
Host. Dorothy Wallace is the hostess. Anybody who is interested in having dinner with the speaker should contact Dorothy at 646-3610.