2007/10/05 by Colin Guillarmou, Guillarmou, Colin, Antônio Sá Barreto +1 · 3 citations
Mathematics · #Numerical methods in inverse problems #Spectral Theory in Mathematical Physics #Geometric Analysis and Curvature Flows
paper · pdf · doi:10.48550/arxiv.0710.1136
We show that the Dirichlet-to-Neumann operator of the Laplacian on an open subset of the boundary of a connected compact Einstein manifold with boundary determines the manifold up to isometries. Similarly, for connected conformally compact Einstein manifolds of even dimension n+1, we prove that the scattering matrix at energy n on an open subset of its boundary determines the manifold up to isometries.