Dear Colleagues,

It is SUMMER. Yet, we continue our Colloquium in the Math Department.

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Boris Belinskiy,

Math Department, UTC

Tuesday, June 22, EMCS 232, 2:00pm.

Control of a string: some new developments and open problems

Abstract

It is well--known that the problem of exact controllability for the wave
equation with constant (in time) parameters may be reduced to a moment
problem for non--harmonic exponential functions. We consider a string
with parameters that are varying in time. As a result, our moment
problem is rather unusual. So far, we are able to prove a
controllability result for a string under the ``slowly" varying tension.
We formulate some open problems.

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Boris P Belinskiy

Department of Mathematics, Dept. 6956

University of Tennessee at Chattanooga

Ph. (423) 425-4748