Runge approximation and stability improvement for a partial data Calderón problem for the acoustic Helmholtz equation
Runge approximation and stability improvement for a partial data Calderón problem for the acoustic Helmholtz equation
<p style='text-indent:20px;'>In this article, we discuss quantitative Runge approximation properties for the acoustic Helmholtz equation and prove stability improvement results in the high frequency limit for an associated partial data inverse problem modelled on [<xref ref-type="bibr" rid="b3">3</xref>,<xref ref-type="bibr" rid="b35">35</xref>]. The results rely on quantitative unique continuation estimates in suitable function …