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Paper detail

Asymptotic Boundary Observability For The Wave Equation On Simplices

In this paper, we consider the wave equation on an n-dimensional simplex with Dirichlet boundary conditions. Our main result is an asymptotic observability identity from any one face of the simplex. The novel aspects of the result are that it is a large-time asymptotic rather than an estimate, and it requires no dynamical assumptions on the billiard flow. The proof uses mainly integrations by parts.

preprint2020arXivOpen access
Hans ChristiansonZiqing Lu
math.AP
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Hans ChristiansonZiqing Lu

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