The Dirichlet-to-Neumann operator for quantum graphs
classification
🧮 math.SP
keywords
dirichlet-to-neumanngraphsoperatorarbitraryboundarycompactconnectedconsists
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For a compact, connected metric graphs with a boundary that consists of $k$ vertices, we prove that an arbitrary symmetric $k\times k$ matrix with real entries can be realized as the Dirichlet-to-Neumann operator for the Laplacian plus a constant.
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