2023/03/07 by Choulli, Mourad, Ouhabaz, El Maati
#35R01 #35R11 #35R30 #Analysis of PDEs (math.AP) #FOS: Mathematics
paper · doi:10.48550/arxiv.2303.03764
We prove that the metric tensor g of a complete Riemannian manifold is uniquely determined, up to isometry, from the knowledge of a local source-to-solution operator. This later is associated to a fractional power of the Laplace-Belrami operator Δg. Our result holds under the condition that the metric tensor g is known in an arbitrary small subdomain. We also consider the case of closed manifolds and provide an improvement of the main result in \citeFGKU