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Single logarithmic conditional stability in determining unknown boundaries
2016, Elschner, Johannes, Hu, Guanghui, Yamamoto, Masahiro
We prove a conditional stability estimate of log-type for determining unknown boundaries from a single Cauchy data taken on an accessible subboundary. Our approach relies on new interior and boundary estimates derived from the Carleman estimate for elliptic equations. A local stability result for target identification of an acoustic sound-soft scatterer from a single far-field pattern is also obtained.