Physics – Mathematical Physics
Scientific paper
2009-02-26
Physics
Mathematical Physics
The proof of Theorem 4.1 is expanded, Example 1 of section 4.3 is improved, misprints are corrected
Scientific paper
We consider wave equations in domains with time-dependent boundaries (moving obstacles) contained in a fixed cylinder for all time. We give sufficient conditions for the determination of the moving boundary from the Cauchy data on part of the boundary of the cylinder. We also study the related problem of accessibility of the moving boundary by time-like curves from the boundary of the cylinder.
Eskin Gregory
Ralston James
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