Journal
JOURNAL OF MATHEMATICAL ANALYSIS AND APPLICATIONS
Volume 482, Issue 1, Pages -Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jmaa.2019.123533
Keywords
Inverse problem; Dirichlet to Neumann map; Wave equation; Time dependent coefficient
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This paper concerns the stability in the inverse problem of determining the time dependent coefficient in the wave equation, from partial knowledge of the Dirichlet-to-Neumann map at the boundary of a bounded domain of interest. We first establish a stability estimate in the determination of the time-dependent coefficient from partial boundary observations. Then we prove that by enlarging the set of data, the unknown coefficient can be stably determined in larger regions. (C) 2019 Elsevier Inc. All rights reserved.
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