The main result of the present paper consists in a quanti- tative estimate of unique continuation at the boundary for solutions to the wave equation. Such estimate is the sharp quantitative counterpart of the following strong unique continuation property: let u be a solution to the wave equation that satisfies an homogeneous Robin condition on a portion S of the boundary and the restriction of u on S is flat on a segment \{0\} \times J with 0 \in S then u|S vanishes in a neighbourhood of \{0\} \times J.

### Wave equation with Robin condition, quantitative estimates of strong unique continuation at the boundary

#### Abstract

The main result of the present paper consists in a quanti- tative estimate of unique continuation at the boundary for solutions to the wave equation. Such estimate is the sharp quantitative counterpart of the following strong unique continuation property: let u be a solution to the wave equation that satisfies an homogeneous Robin condition on a portion S of the boundary and the restriction of u on S is flat on a segment \{0\} \times J with 0 \in S then u|S vanishes in a neighbourhood of \{0\} \times J.
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http://hdl.handle.net/10077/13158
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11368/2882208