Mathematical Research Letters

Volume 10 (2003)

Number 5

On nonuniqueness for Calderón’s inverse problem

Pages: 685 – 693



Allan Greenleaf (University of Rochester)

Matti Lassas (University of Helsinki)

Gunther Uhlmann (University of Washington, Seattle)


We construct anisotropic conductivities with the same Dirichlet-to-Neumann map as a homogeneous isotropic conductivity. These conductivities are singular close to a surface inside the body.

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