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Detection of cavities in Helmholtz-type equations using the boundary element method. (English) Zbl 1097.80004
The detection of interior circular cavities in acoustics is investigated using the boundary element method combined with least squares procedure. Uniqueness holds for one cavity (circular) but I am not sure that the result for multiple cavities (circular) is proved yet. The method can easily be extended to the detection of interior spherical cavities.

80M15 Boundary element methods applied to problems in thermodynamics and heat transfer
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