The complete Dirichlet-to-Neumann map for differential forms

Details The complete Dirichlet-to-Neumann map for differential forms The complete Dirichlet-to-Neumann map for differential forms

2010-11-04

arxiv.org/abs/1011.1194v1

Mathematics

Differential Geometry

16 pages

Scientific paper

The Dirichlet-to-Neumann map for differential forms on a Riemannian manifold with boundary is a generalization of the classical Dirichlet-to-Neumann map which arises in the problem of Electrical Impedance Tomography. We synthesize the two different approaches to defining this operator by giving an invariant definition of the complete Dirichlet-to-Neumann map for differential forms in terms of two linear operators {\Phi} and {\Psi}. The pair ({\Phi}, {\Psi}) is equivalent to Joshi and Lionheart's operator {\Pi} and determines Belishev and Sharafutdinov's operator {\Lambda}. We show that the Betti numbers of the manifold are determined by {\Phi} and that {\Psi} determines a chain complex whose homologies are explicitly related to the cohomology groups of the manifold.

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