## Time-harmonic acoustic scattering from locally perturbed periodic curves.(English)Zbl 1479.78013

### MSC:

 78A45 Diffraction, scattering 76Q05 Hydro- and aero-acoustics 74J20 Wave scattering in solid mechanics 35J05 Laplace operator, Helmholtz equation (reduced wave equation), Poisson equation 35J08 Green’s functions for elliptic equations 35J50 Variational methods for elliptic systems 35P25 Scattering theory for PDEs 35A01 Existence problems for PDEs: global existence, local existence, non-existence 35A02 Uniqueness problems for PDEs: global uniqueness, local uniqueness, non-uniqueness
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### References:

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