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An Ingham type proof for a bigrid observability theorem
It is well known that classical semi-discretization of the wave equation do not lead to uniform observability. One remedy is to use a two-grid method; this was at first analysed by Negreanu and Zuazua. We propose here an Ingham type approach to study this problem. The main difficulty is to handle wi...
| Autores principales: | , |
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| Lenguaje: | fre |
| Publicado: |
2005
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| Materias: | |
| Acceso en línea: | http://cds.cern.ch/record/897524 |