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The decay of the local energy for wave equations with discontinuous coefficients
1977
Nagoya mathematical journal
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The exponential decay of the local energy for wave equations in exterior domains of the odd dimensional space has been proved in [1] ~ [6] etc. under the Dirichlet boundary condition and in [5], [7] under the Neumann condition and the other conditions. In this paper, we shall consider this problem for the following equation:
doi:10.1017/s0027763000017864
fatcat:e2s5glf6r5efrdr5klxunnx4sy