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The wave equation with oscillating density:observability at low frequency

Published online by Cambridge University Press:  15 August 2002

Gilles Lebeau
Gilles Lebeau*
Affiliation:
Centre de Mathématiques, École Polytechnique, UMR 7640 du CNRS, 91128 Palaiseau Cedex, France; [email protected].
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Abstract

We prove an observability estimate for awave equation with rapidly oscillating density,in a bounded domain with Dirichlet boundary condition.

Keywords

Bloch waveobservabilitymicrolocal defect measures.
Type
Research Article
Information
ESAIM: Control, Optimisation and Calculus of Variations , Volume 5 , 2000 , pp. 219 - 258
Copyright
© EDP Sciences, SMAI, 2000

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