. "Exponential decay"@en . "Non-smooth coefficients"@en . "Control"@en . "Anisotropic elliptic operators"@en . "01fdbac2951f53459820174751e99eaa" . "Piecewise constant"@en . "Bounded variation"@en . <070679568> . . "Limiting absorption principle" . "Guided state" . "Schr\u00F6dinger operator" . "Dermenjian" . "58J50 concentration"@en . "Well of profile"@en . "Observability"@en . "Parabolic operators"@en . "Periodic potential" . "Secondary 35P20 58J50 concentration non-concentration layered media eigenfunctions second-order elliptic diffusion coefficient piecewise constant bounded variation well of profile exponential decay"@en . "Parabolic equations"@en . . . "Yves Dermenjian" . . "Inverse problem"@en . "Non-concentration"@en . "December 10 2022 2010 Mathematics Subject Classification Primary 35J25"@en . "Car-leman estimate"@en . "Carleman estimate"@en . "Yves" . . "2022 2010 Mathematics Subject Classification Primary 35J25"@en . "Observation location"@en . "Eigenfunctions"@en . "Diffusion coefficient"@en . "Approximation"@en . "Secondary 35P20"@en . "Elliptic operators"@en . "Stratified media"@en . "Layered media"@en . "December 10"@en . "Second-order elliptic"@en .